./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R --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 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:24:21,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:24:21,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:24:21,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:24:21,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:24:21,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:24:21,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:24:21,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:24:21,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:24:21,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:24:21,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:24:21,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:24:21,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:24:21,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:24:21,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:24:21,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:24:21,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:24:21,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:24:21,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:24:21,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:24:21,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:24:21,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:24:21,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:24:21,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:24:21,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:24:21,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:24:21,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:24:21,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:24:21,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:24:21,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:24:21,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:24:21,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:24:21,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:24:21,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:24:21,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:24:21,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:24:21,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:24:21,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:24:21,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:24:21,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:24:21,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:24:21,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-25 18:24:21,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:24:21,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:24:21,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:24:21,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:24:21,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:24:21,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:24:21,315 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:24:21,315 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 18:24:21,315 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 18:24:21,315 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 18:24:21,316 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 18:24:21,317 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 18:24:21,317 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 18:24:21,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:24:21,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:24:21,317 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:24:21,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:24:21,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:24:21,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:24:21,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 18:24:21,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 18:24:21,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 18:24:21,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:24:21,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:24:21,319 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 18:24:21,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:24:21,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 18:24:21,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:24:21,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:24:21,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:24:21,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:24:21,322 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 18:24:21,323 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_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 [2022-11-25 18:24:21,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:24:21,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:24:21,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:24:21,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:24:21,667 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:24:21,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2022-11-25 18:24:24,856 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:24:25,057 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:24:25,058 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2022-11-25 18:24:25,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/data/3b7db60ae/236b40c312564e079c00384c71299227/FLAGbe6e8810c [2022-11-25 18:24:25,081 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/data/3b7db60ae/236b40c312564e079c00384c71299227 [2022-11-25 18:24:25,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:24:25,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:24:25,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:24:25,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:24:25,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:24:25,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9cf056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25, skipping insertion in model container [2022-11-25 18:24:25,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:24:25,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:24:25,272 WARN L237 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_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2022-11-25 18:24:25,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:24:25,286 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:24:25,302 WARN L237 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_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2022-11-25 18:24:25,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:24:25,319 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:24:25,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25 WrapperNode [2022-11-25 18:24:25,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:24:25,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:24:25,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:24:25,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:24:25,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,348 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-25 18:24:25,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:24:25,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:24:25,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:24:25,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:24:25,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:24:25,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:24:25,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:24:25,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:24:25,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (1/1) ... [2022-11-25 18:24:25,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:25,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:25,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:25,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 18:24:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:24:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:24:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-25 18:24:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-25 18:24:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-25 18:24:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-25 18:24:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:24:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:24:25,541 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:24:25,546 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:24:25,733 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:24:25,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:24:25,739 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:24:25,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:25 BoogieIcfgContainer [2022-11-25 18:24:25,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:24:25,742 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 18:24:25,742 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 18:24:25,747 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 18:24:25,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 18:24:25,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 06:24:25" (1/3) ... [2022-11-25 18:24:25,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e2b4624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 06:24:25, skipping insertion in model container [2022-11-25 18:24:25,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 18:24:25,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:25" (2/3) ... [2022-11-25 18:24:25,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e2b4624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 06:24:25, skipping insertion in model container [2022-11-25 18:24:25,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 18:24:25,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:25" (3/3) ... [2022-11-25 18:24:25,775 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-1.c [2022-11-25 18:24:25,871 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 18:24:25,871 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 18:24:25,872 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 18:24:25,872 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 18:24:25,872 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 18:24:25,872 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 18:24:25,872 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 18:24:25,873 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 18:24:25,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:24:25,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-25 18:24:25,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:25,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:25,913 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 18:24:25,914 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:25,914 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 18:24:25,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:24:25,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-25 18:24:25,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:25,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:25,922 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 18:24:25,922 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:25,932 INFO L748 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-25 18:24:25,933 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-25 18:24:25,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-25 18:24:25,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:25,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293442627] [2022-11-25 18:24:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:26,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:26,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-25 18:24:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:26,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322533484] [2022-11-25 18:24:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:26,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:26,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-25 18:24:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:26,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851084738] [2022-11-25 18:24:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:26,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:26,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:26,474 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:26,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:26,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:26,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:26,475 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:24:26,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:26,476 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:26,476 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2022-11-25 18:24:26,476 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:26,476 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:26,492 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,503 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,506 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,509 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,511 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,514 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,517 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,520 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,604 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:26,605 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:24:26,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 18:24:26,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,638 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,638 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-25 18:24:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 18:24:26,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,668 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:26,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 18:24:26,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-11-25 18:24:26,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 18:24:26,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:26,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 18:24:26,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,764 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:26,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 18:24:26,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,799 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-25 18:24:26,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 18:24:26,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,819 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:26,820 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:26,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:26,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 18:24:26,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:26,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-25 18:24:26,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:26,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 18:24:26,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:24:26,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:26,941 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:24:26,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:26,945 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:26,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:26,945 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:26,945 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:26,945 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:24:26,945 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:26,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:26,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:26,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2022-11-25 18:24:26,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:26,946 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:26,947 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,975 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,981 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,983 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,992 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:26,994 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:27,060 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:27,065 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:24:27,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,068 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:27,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 18:24:27,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:27,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:27,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:27,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:27,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:27,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:27,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:27,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:27,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,138 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,146 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 [2022-11-25 18:24:27,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:27,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:27,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:27,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:27,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:27,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:27,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-25 18:24:27,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:27,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:27,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:27,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,180 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:27,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:27,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:27,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:27,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:27,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:27,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:27,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:27,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 18:24:27,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:27,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:27,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,235 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,240 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:27,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:27,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:27,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:27,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:27,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:27,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 18:24:27,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:27,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:27,268 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:27,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:27,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,273 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 18:24:27,278 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:27,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:27,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:27,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:27,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:27,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:27,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:27,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:27,297 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:27,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-11-25 18:24:27,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,317 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:27,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 18:24:27,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:27,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:27,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:27,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:27,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:27,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:27,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:27,344 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:24:27,351 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 18:24:27,351 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 18:24:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:27,379 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:27,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-25 18:24:27,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:24:27,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:24:27,390 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:24:27,390 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-25 18:24:27,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:27,395 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:24:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:27,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:24:27,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:27,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:24:27,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:27,594 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-25 18:24:27,597 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:27,852 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-25 18:24:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-25 18:24:27,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-25 18:24:27,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:27,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-25 18:24:27,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:27,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-25 18:24:27,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:27,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-25 18:24:27,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-25 18:24:27,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-25 18:24:27,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-25 18:24:27,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-25 18:24:27,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-25 18:24:27,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:27,882 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-25 18:24:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-25 18:24:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-25 18:24:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-25 18:24:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-25 18:24:27,918 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-25 18:24:27,918 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-25 18:24:27,918 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 18:24:27,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-25 18:24:27,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-25 18:24:27,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:27,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:27,921 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:27,921 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:27,922 INFO L748 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-25 18:24:27,922 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-25 18:24:27,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:27,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-25 18:24:27,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:27,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362469513] [2022-11-25 18:24:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:24:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362469513] [2022-11-25 18:24:28,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362469513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:28,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:28,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:28,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183300687] [2022-11-25 18:24:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:28,088 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:24:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-25 18:24:28,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:28,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826408643] [2022-11-25 18:24:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:28,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826408643] [2022-11-25 18:24:28,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826408643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:28,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066298890] [2022-11-25 18:24:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:28,226 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 18:24:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:28,230 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:24:28,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:28,328 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-25 18:24:28,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-25 18:24:28,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-25 18:24:28,346 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-25 18:24:28,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-25 18:24:28,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-25 18:24:28,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-25 18:24:28,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:28,349 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-25 18:24:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-25 18:24:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-25 18:24:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-25 18:24:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-25 18:24:28,362 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-25 18:24:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:28,365 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-25 18:24:28,365 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 18:24:28,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-25 18:24:28,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-25 18:24:28,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:28,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:28,370 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:28,370 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:28,371 INFO L748 eck$LassoCheckResult]: Stem: 340#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-25 18:24:28,371 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-25 18:24:28,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-25 18:24:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:28,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140800183] [2022-11-25 18:24:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:28,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:24:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140800183] [2022-11-25 18:24:28,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140800183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808721667] [2022-11-25 18:24:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:28,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:28,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:28,581 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:28,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 18:24:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:24:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:28,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:28,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808721667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:28,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:28,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-11-25 18:24:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430219224] [2022-11-25 18:24:28,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:28,834 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:24:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-25 18:24:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:28,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944041548] [2022-11-25 18:24:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:28,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:28,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:29,083 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:29,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:29,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:29,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:29,084 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:24:29,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:29,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:29,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2022-11-25 18:24:29,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:29,084 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:29,085 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,090 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,093 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,102 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,106 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,108 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:29,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:29,170 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:24:29,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,171 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:29,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:29,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 18:24:29,198 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:29,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:29,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,209 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 18:24:29,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:29,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:29,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:29,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:29,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,268 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:29,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:29,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-25 18:24:29,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:29,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:29,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,309 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:29,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:29,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 18:24:29,342 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:29,343 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:29,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,353 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:29,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:29,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 18:24:29,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:29,393 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:24:29,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:29,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 18:24:30,707 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:24:30,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:30,711 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:30,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:30,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:30,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:30,711 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:24:30,711 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:30,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:30,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:30,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2022-11-25 18:24:30,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:30,712 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:30,713 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,720 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,727 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,736 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,740 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,743 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,746 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:30,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:30,808 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:24:30,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:30,811 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:30,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:30,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-25 18:24:30,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:30,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:30,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:30,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:30,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:30,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:30,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:30,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:30,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:30,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:30,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:30,869 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:30,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-25 18:24:30,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:30,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:30,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:30,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:30,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:30,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:30,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:30,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:30,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:30,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:30,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:30,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:30,914 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:30,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:30,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-25 18:24:30,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:30,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:30,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:30,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:30,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:30,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:30,938 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:30,955 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:30,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:30,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:30,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:30,962 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:30,965 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 [2022-11-25 18:24:30,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:30,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:30,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:30,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:30,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:30,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:30,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:30,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-25 18:24:30,990 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:24:30,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 18:24:30,995 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 18:24:30,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:30,999 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:31,000 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:24:31,000 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:24:31,000 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:24:31,000 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-25 18:24:31,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-25 18:24:31,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:31,005 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:24:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:31,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:24:31,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:31,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:24:31,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:31,301 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-25 18:24:31,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:24:31,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:31,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-25 18:24:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:24:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-25 18:24:31,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-25 18:24:31,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:31,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-25 18:24:31,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:31,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-25 18:24:31,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:31,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-25 18:24:31,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-25 18:24:31,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-25 18:24:31,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-25 18:24:31,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-25 18:24:31,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-25 18:24:31,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:31,800 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-25 18:24:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-25 18:24:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-25 18:24:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-25 18:24:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-25 18:24:31,814 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-25 18:24:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:24:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:24:31,815 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2022-11-25 18:24:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:32,009 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2022-11-25 18:24:32,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 247 transitions. [2022-11-25 18:24:32,018 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-25 18:24:32,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 243 transitions. [2022-11-25 18:24:32,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2022-11-25 18:24:32,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2022-11-25 18:24:32,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 243 transitions. [2022-11-25 18:24:32,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:32,031 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 243 transitions. [2022-11-25 18:24:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 243 transitions. [2022-11-25 18:24:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2022-11-25 18:24:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (56), 33 states have call predecessors, (56), 36 states have call successors, (56) [2022-11-25 18:24:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2022-11-25 18:24:32,058 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-11-25 18:24:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:24:32,063 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-11-25 18:24:32,064 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 18:24:32,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 225 transitions. [2022-11-25 18:24:32,065 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-25 18:24:32,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:32,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:32,070 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:32,070 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:32,070 INFO L748 eck$LassoCheckResult]: Stem: 1200#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1201#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1230#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1271#fibo1ENTRY ~n := #in~n; 1257#L10 assume !(~n < 1); 1251#L12 assume !(1 == ~n); 1206#L15 call #t~ret4 := fibo2(~n - 1);< 1258#fibo2ENTRY ~n := #in~n; 1265#L20 assume !(~n < 1); 1205#L22 assume !(1 == ~n); 1207#L25 call #t~ret6 := fibo1(~n - 1);< 1238#fibo1ENTRY ~n := #in~n; 1301#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1203#L15 call #t~ret4 := fibo2(~n - 1);< 1316#fibo2ENTRY ~n := #in~n; 1319#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1315#fibo2EXIT >#50#return; 1312#L15-1 call #t~ret5 := fibo2(~n - 2);< 1313#fibo2ENTRY ~n := #in~n; 1317#L20 assume ~n < 1;#res := 0; 1314#fibo2FINAL assume true; 1311#fibo2EXIT >#52#return; 1308#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1304#fibo1FINAL assume true; 1305#fibo1EXIT >#46#return; 1226#L25-1 call #t~ret7 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1328#L10 assume ~n < 1;#res := 0; 1363#fibo1FINAL assume true; 1225#fibo1EXIT >#48#return; 1229#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1241#fibo2FINAL assume true; 1252#fibo2EXIT >#50#return; 1232#L15-1 call #t~ret5 := fibo2(~n - 2);< 1239#fibo2ENTRY [2022-11-25 18:24:32,070 INFO L750 eck$LassoCheckResult]: Loop: 1239#fibo2ENTRY ~n := #in~n; 1268#L20 assume !(~n < 1); 1309#L22 assume !(1 == ~n); 1231#L25 call #t~ret6 := fibo1(~n - 1);< 1216#fibo1ENTRY ~n := #in~n; 1346#L10 assume !(~n < 1); 1248#L12 assume !(1 == ~n); 1234#L15 call #t~ret4 := fibo2(~n - 1);< 1239#fibo2ENTRY [2022-11-25 18:24:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 613030308, now seen corresponding path program 1 times [2022-11-25 18:24:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:32,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123820973] [2022-11-25 18:24:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:24:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 18:24:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:24:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:32,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123820973] [2022-11-25 18:24:32,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123820973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:32,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052873851] [2022-11-25 18:24:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:32,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:32,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:32,289 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:32,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-25 18:24:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:32,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:32,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:24:32,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:24:32,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052873851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:32,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:32,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2022-11-25 18:24:32,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494985944] [2022-11-25 18:24:32,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:32,844 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:24:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-11-25 18:24:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:32,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623332418] [2022-11-25 18:24:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:32,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:32,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:32,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:32,955 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:32,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:32,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:32,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:32,956 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:24:32,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:32,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:32,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:32,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2022-11-25 18:24:32,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:32,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:32,957 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,960 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,962 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,964 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,966 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,969 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:32,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,025 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:33,025 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:24:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,027 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,031 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-25 18:24:33,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:33,052 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:33,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,063 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-25 18:24:33,089 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:33,089 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:33,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,099 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-25 18:24:33,135 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:33,135 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:33,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,145 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-25 18:24:33,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:33,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:33,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,197 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-25 18:24:33,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:33,223 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:33,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,229 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-25 18:24:33,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:33,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:33,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,278 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:33,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-25 18:24:33,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,324 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:24:33,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:33,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-25 18:24:33,423 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:24:33,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,427 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:33,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:33,427 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:33,427 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:33,427 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:24:33,428 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:33,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:33,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2022-11-25 18:24:33,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:33,428 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:33,429 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,433 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,435 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,437 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,439 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,441 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,443 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,445 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:33,501 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:33,501 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:24:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,502 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,516 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-25 18:24:33,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,552 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,564 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-25 18:24:33,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,587 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,597 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,601 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-25 18:24:33,635 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,644 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,663 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,663 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-25 18:24:33,672 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,682 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-25 18:24:33,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,728 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,738 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,762 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-25 18:24:33,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,779 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,783 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-25 18:24:33,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:33,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,816 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:33,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:33,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:33,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:33,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:33,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:33,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:33,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:33,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-25 18:24:33,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:24:33,861 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 18:24:33,861 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 18:24:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:33,865 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,867 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:24:33,867 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:24:33,867 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:24:33,867 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-11-25 18:24:33,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-25 18:24:33,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,872 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:24:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:33,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:24:33,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:24:34,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:34,351 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-25 18:24:34,351 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:24:34,533 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-11-25 18:24:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:24:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-11-25 18:24:34,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-25 18:24:34,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:34,535 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:24:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:24:34,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:34,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:34,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:24:34,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:35,009 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-25 18:24:35,009 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:24:35,172 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-11-25 18:24:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:24:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-11-25 18:24:35,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-25 18:24:35,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:35,174 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:24:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:35,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:24:35,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:35,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:24:35,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:35,607 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-25 18:24:35,607 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:24:35,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 553 states and 762 transitions. Complement of second has 25 states. [2022-11-25 18:24:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 18:24:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-11-25 18:24:35,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 8 letters. [2022-11-25 18:24:35,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:35,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-25 18:24:35,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:35,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 16 letters. [2022-11-25 18:24:35,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:35,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 553 states and 762 transitions. [2022-11-25 18:24:35,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-11-25 18:24:35,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 553 states to 445 states and 639 transitions. [2022-11-25 18:24:35,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2022-11-25 18:24:35,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2022-11-25 18:24:35,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 639 transitions. [2022-11-25 18:24:35,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:35,804 INFO L218 hiAutomatonCegarLoop]: Abstraction has 445 states and 639 transitions. [2022-11-25 18:24:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 639 transitions. [2022-11-25 18:24:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2022-11-25 18:24:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 269 states have internal predecessors, (316), 71 states have call successors, (74), 55 states have call predecessors, (74), 53 states have return successors, (117), 45 states have call predecessors, (117), 69 states have call successors, (117) [2022-11-25 18:24:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2022-11-25 18:24:35,852 INFO L240 hiAutomatonCegarLoop]: Abstraction has 370 states and 507 transitions. [2022-11-25 18:24:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:35,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 18:24:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:24:35,853 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-25 18:24:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:36,237 INFO L93 Difference]: Finished difference Result 449 states and 635 transitions. [2022-11-25 18:24:36,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 635 transitions. [2022-11-25 18:24:36,244 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-25 18:24:36,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 410 states and 591 transitions. [2022-11-25 18:24:36,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2022-11-25 18:24:36,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2022-11-25 18:24:36,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 591 transitions. [2022-11-25 18:24:36,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:36,251 INFO L218 hiAutomatonCegarLoop]: Abstraction has 410 states and 591 transitions. [2022-11-25 18:24:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 591 transitions. [2022-11-25 18:24:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 359. [2022-11-25 18:24:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 233 states have (on average 1.240343347639485) internal successors, (289), 261 states have internal predecessors, (289), 74 states have call successors, (77), 50 states have call predecessors, (77), 52 states have return successors, (130), 47 states have call predecessors, (130), 72 states have call successors, (130) [2022-11-25 18:24:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2022-11-25 18:24:36,267 INFO L240 hiAutomatonCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-11-25 18:24:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:24:36,290 INFO L428 stractBuchiCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-11-25 18:24:36,290 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 18:24:36,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 496 transitions. [2022-11-25 18:24:36,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-25 18:24:36,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:36,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:36,298 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:36,298 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-11-25 18:24:36,299 INFO L748 eck$LassoCheckResult]: Stem: 4905#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4941#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4985#fibo1ENTRY ~n := #in~n; 5033#L10 assume !(~n < 1); 5032#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5030#fibo2ENTRY ~n := #in~n; 5029#L20 assume !(~n < 1); 5026#L22 assume !(1 == ~n); 4947#L25 call #t~ret6 := fibo1(~n - 1);< 5018#fibo1ENTRY ~n := #in~n; 5027#L10 assume !(~n < 1); 5123#L12 assume !(1 == ~n); 5102#L15 call #t~ret4 := fibo2(~n - 1);< 5121#fibo2ENTRY ~n := #in~n; 5126#L20 assume !(~n < 1); 5125#L22 assume 1 == ~n;#res := 1; 5122#fibo2FINAL assume true; 5120#fibo2EXIT >#50#return; 4944#L15-1 call #t~ret5 := fibo2(~n - 2);< 4948#fibo2ENTRY ~n := #in~n; 5148#L20 assume ~n < 1;#res := 0; 5137#fibo2FINAL assume true; 5136#fibo2EXIT >#52#return; 5135#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5134#fibo1FINAL assume true; 5133#fibo1EXIT >#46#return; 5108#L25-1 call #t~ret7 := fibo1(~n - 2);< 5114#fibo1ENTRY ~n := #in~n; 5254#L10 assume ~n < 1;#res := 0; 5252#fibo1FINAL assume true; 5158#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5181#fibo2FINAL assume true; 5180#fibo2EXIT >#50#return; 4915#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY [2022-11-25 18:24:36,299 INFO L750 eck$LassoCheckResult]: Loop: 5103#fibo2ENTRY ~n := #in~n; 4983#L20 assume !(~n < 1); 4913#L22 assume !(1 == ~n); 4919#L25 call #t~ret6 := fibo1(~n - 1);< 5117#fibo1ENTRY ~n := #in~n; 5131#L10 assume !(~n < 1); 5176#L12 assume !(1 == ~n); 4918#L15 call #t~ret4 := fibo2(~n - 1);< 4982#fibo2ENTRY ~n := #in~n; 4983#L20 assume !(~n < 1); 4913#L22 assume !(1 == ~n); 4919#L25 call #t~ret6 := fibo1(~n - 1);< 5117#fibo1ENTRY ~n := #in~n; 5131#L10 assume !(~n < 1); 5176#L12 assume !(1 == ~n); 4918#L15 call #t~ret4 := fibo2(~n - 1);< 4982#fibo2ENTRY ~n := #in~n; 4984#L20 assume !(~n < 1); 5195#L22 assume 1 == ~n;#res := 1; 5194#fibo2FINAL assume true; 5191#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#46#return; 5185#L25-1 call #t~ret7 := fibo1(~n - 2);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume !(~n < 1); 5197#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5151#fibo2ENTRY ~n := #in~n; 5174#L20 assume !(~n < 1); 5172#L22 assume !(1 == ~n); 5170#L25 call #t~ret6 := fibo1(~n - 1);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume !(~n < 1); 5197#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5151#fibo2ENTRY ~n := #in~n; 5174#L20 assume !(~n < 1); 5172#L22 assume 1 == ~n;#res := 1; 5173#fibo2FINAL assume true; 5192#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#46#return; 5185#L25-1 call #t~ret7 := fibo1(~n - 2);< 5171#fibo1ENTRY ~n := #in~n; 5198#L10 assume ~n < 1;#res := 0; 5157#fibo1FINAL assume true; 5188#fibo1EXIT >#48#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5140#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY ~n := #in~n; 5104#L20 assume ~n < 1;#res := 0; 5204#fibo2FINAL assume true; 5190#fibo2EXIT >#52#return; 5143#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5189#fibo1FINAL assume true; 5184#fibo1EXIT >#48#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5140#fibo2EXIT >#50#return; 4916#L15-1 call #t~ret5 := fibo2(~n - 2);< 5103#fibo2ENTRY [2022-11-25 18:24:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1718474001, now seen corresponding path program 1 times [2022-11-25 18:24:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:36,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893138781] [2022-11-25 18:24:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:24:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:24:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:24:36,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893138781] [2022-11-25 18:24:36,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893138781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803773866] [2022-11-25 18:24:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:36,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:36,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:36,512 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:36,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-25 18:24:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:24:36,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:24:36,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:24:36,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803773866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:36,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:36,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2022-11-25 18:24:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058006418] [2022-11-25 18:24:36,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:36,859 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:24:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 688787707, now seen corresponding path program 1 times [2022-11-25 18:24:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:36,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436590705] [2022-11-25 18:24:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:36,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 18:24:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:24:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:24:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-25 18:24:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-25 18:24:37,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436590705] [2022-11-25 18:24:37,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436590705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580573562] [2022-11-25 18:24:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:37,192 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:37,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-25 18:24:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:37,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 18:24:37,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 18:24:37,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580573562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:37,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:37,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-25 18:24:37,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393985195] [2022-11-25 18:24:37,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:37,886 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 18:24:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 18:24:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:24:37,887 INFO L87 Difference]: Start difference. First operand 359 states and 496 transitions. cyclomatic complexity: 144 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-25 18:24:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:38,096 INFO L93 Difference]: Finished difference Result 387 states and 546 transitions. [2022-11-25 18:24:38,096 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 546 transitions. [2022-11-25 18:24:38,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-25 18:24:38,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 387 states and 546 transitions. [2022-11-25 18:24:38,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2022-11-25 18:24:38,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 209 [2022-11-25 18:24:38,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 387 states and 546 transitions. [2022-11-25 18:24:38,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:38,106 INFO L218 hiAutomatonCegarLoop]: Abstraction has 387 states and 546 transitions. [2022-11-25 18:24:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states and 546 transitions. [2022-11-25 18:24:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2022-11-25 18:24:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 238 states have (on average 1.2352941176470589) internal successors, (294), 269 states have internal predecessors, (294), 75 states have call successors, (78), 50 states have call predecessors, (78), 56 states have return successors, (136), 49 states have call predecessors, (136), 73 states have call successors, (136) [2022-11-25 18:24:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2022-11-25 18:24:38,121 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-11-25 18:24:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:24:38,122 INFO L428 stractBuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-11-25 18:24:38,122 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 18:24:38,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2022-11-25 18:24:38,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-25 18:24:38,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:38,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:38,127 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:38,127 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-11-25 18:24:38,127 INFO L748 eck$LassoCheckResult]: Stem: 6614#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6654#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6697#fibo1ENTRY ~n := #in~n; 6748#L10 assume !(~n < 1); 6747#L12 assume !(1 == ~n); 6739#L15 call #t~ret4 := fibo2(~n - 1);< 6745#fibo2ENTRY ~n := #in~n; 6744#L20 assume !(~n < 1); 6741#L22 assume !(1 == ~n); 6661#L25 call #t~ret6 := fibo1(~n - 1);< 6740#fibo1ENTRY ~n := #in~n; 6729#L10 assume !(~n < 1); 6730#L12 assume !(1 == ~n); 6716#L15 call #t~ret4 := fibo2(~n - 1);< 6717#fibo2ENTRY ~n := #in~n; 6731#L20 assume !(~n < 1); 6732#L22 assume !(1 == ~n); 6663#L25 call #t~ret6 := fibo1(~n - 1);< 6740#fibo1ENTRY ~n := #in~n; 6742#L10 assume !(~n < 1); 6836#L12 assume 1 == ~n;#res := 1; 6834#fibo1FINAL assume true; 6832#fibo1EXIT >#46#return; 6812#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6932#L10 assume ~n < 1;#res := 0; 6933#fibo1FINAL assume true; 6936#fibo1EXIT >#48#return; 6886#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6914#fibo2FINAL assume true; 6851#fibo2EXIT >#50#return; 6626#L15-1 [2022-11-25 18:24:38,127 INFO L750 eck$LassoCheckResult]: Loop: 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6692#L20 assume !(~n < 1); 6622#L22 assume !(1 == ~n); 6628#L25 call #t~ret6 := fibo1(~n - 1);< 6875#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6901#L12 assume !(1 == ~n); 6627#L15 call #t~ret4 := fibo2(~n - 1);< 6695#fibo2ENTRY ~n := #in~n; 6692#L20 assume !(~n < 1); 6622#L22 assume !(1 == ~n); 6628#L25 call #t~ret6 := fibo1(~n - 1);< 6875#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6901#L12 assume !(1 == ~n); 6627#L15 call #t~ret4 := fibo2(~n - 1);< 6695#fibo2ENTRY ~n := #in~n; 6696#L20 assume !(~n < 1); 6906#L22 assume 1 == ~n;#res := 1; 6907#fibo2FINAL assume true; 6892#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6859#L25-1 call #t~ret7 := fibo1(~n - 2);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume !(1 == ~n); 6854#L15 call #t~ret4 := fibo2(~n - 1);< 6862#fibo2ENTRY ~n := #in~n; 6919#L20 assume !(~n < 1); 6916#L22 assume !(1 == ~n); 6857#L25 call #t~ret6 := fibo1(~n - 1);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume !(1 == ~n); 6854#L15 call #t~ret4 := fibo2(~n - 1);< 6862#fibo2ENTRY ~n := #in~n; 6919#L20 assume !(~n < 1); 6916#L22 assume 1 == ~n;#res := 1; 6915#fibo2FINAL assume true; 6890#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6859#L25-1 call #t~ret7 := fibo1(~n - 2);< 6873#fibo1ENTRY ~n := #in~n; 6927#L10 assume !(~n < 1); 6926#L12 assume 1 == ~n;#res := 1; 6897#fibo1FINAL assume true; 6864#fibo1EXIT >#48#return; 6863#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6861#fibo2FINAL assume true; 6853#fibo2EXIT >#50#return; 6626#L15-1 call #t~ret5 := fibo2(~n - 2);< 6659#fibo2ENTRY ~n := #in~n; 6829#L20 assume ~n < 1;#res := 0; 6918#fibo2FINAL assume true; 6889#fibo2EXIT >#52#return; 6852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6888#fibo1FINAL assume true; 6868#fibo1EXIT >#48#return; 6863#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6861#fibo2FINAL assume true; 6853#fibo2EXIT >#50#return; 6626#L15-1 [2022-11-25 18:24:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-25 18:24:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:38,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145165100] [2022-11-25 18:24:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:38,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:24:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:24:38,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:38,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145165100] [2022-11-25 18:24:38,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145165100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:38,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548867449] [2022-11-25 18:24:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:38,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:38,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:38,309 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:38,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-25 18:24:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:24:38,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:38,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:38,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548867449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:38,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:38,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2022-11-25 18:24:38,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150750198] [2022-11-25 18:24:38,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:38,661 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:24:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash 651349219, now seen corresponding path program 1 times [2022-11-25 18:24:38,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:38,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097305755] [2022-11-25 18:24:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 18:24:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:24:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:24:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 18:24:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 18:24:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:38,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097305755] [2022-11-25 18:24:38,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097305755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:38,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386956731] [2022-11-25 18:24:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:38,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:38,965 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:38,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-25 18:24:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:39,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:39,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-25 18:24:39,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-25 18:24:39,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386956731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:39,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:39,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-25 18:24:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731796494] [2022-11-25 18:24:39,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:39,622 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 18:24:39,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:39,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 18:24:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-25 18:24:39,623 INFO L87 Difference]: Start difference. First operand 369 states and 508 transitions. cyclomatic complexity: 146 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 18:24:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:39,929 INFO L93 Difference]: Finished difference Result 400 states and 493 transitions. [2022-11-25 18:24:39,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 493 transitions. [2022-11-25 18:24:39,938 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-11-25 18:24:39,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 235 states and 273 transitions. [2022-11-25 18:24:39,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2022-11-25 18:24:39,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2022-11-25 18:24:39,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 273 transitions. [2022-11-25 18:24:39,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:39,945 INFO L218 hiAutomatonCegarLoop]: Abstraction has 235 states and 273 transitions. [2022-11-25 18:24:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 273 transitions. [2022-11-25 18:24:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-11-25 18:24:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 143 states have (on average 1.167832167832168) internal successors, (167), 159 states have internal predecessors, (167), 47 states have call successors, (48), 34 states have call predecessors, (48), 28 states have return successors, (39), 24 states have call predecessors, (39), 30 states have call successors, (39) [2022-11-25 18:24:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2022-11-25 18:24:39,952 INFO L240 hiAutomatonCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-11-25 18:24:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:24:39,953 INFO L428 stractBuchiCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-11-25 18:24:39,953 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-25 18:24:39,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 254 transitions. [2022-11-25 18:24:39,955 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-11-25 18:24:39,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:39,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:39,957 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:39,958 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:39,959 INFO L748 eck$LassoCheckResult]: Stem: 8302#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8303#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8337#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8375#fibo1ENTRY ~n := #in~n; 8404#L10 assume !(~n < 1); 8399#L12 assume !(1 == ~n); 8349#L15 call #t~ret4 := fibo2(~n - 1);< 8394#fibo2ENTRY ~n := #in~n; 8390#L20 assume !(~n < 1); 8388#L22 assume !(1 == ~n); 8346#L25 call #t~ret6 := fibo1(~n - 1);< 8385#fibo1ENTRY ~n := #in~n; 8413#L10 assume !(~n < 1); 8409#L12 assume !(1 == ~n); 8402#L15 call #t~ret4 := fibo2(~n - 1);< 8403#fibo2ENTRY ~n := #in~n; 8414#L20 assume !(~n < 1); 8411#L22 assume 1 == ~n;#res := 1; 8406#fibo2FINAL assume true; 8401#fibo2EXIT >#50#return; 8397#L15-1 call #t~ret5 := fibo2(~n - 2);< 8398#fibo2ENTRY ~n := #in~n; 8405#L20 assume ~n < 1;#res := 0; 8400#fibo2FINAL assume true; 8396#fibo2EXIT >#52#return; 8395#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8392#fibo1FINAL assume true; 8383#fibo1EXIT >#46#return; 8377#L25-1 call #t~ret7 := fibo1(~n - 2);< 8379#fibo1ENTRY ~n := #in~n; 8449#L10 assume !(~n < 1); 8445#L12 assume 1 == ~n;#res := 1; 8420#fibo1FINAL assume true; 8376#fibo1EXIT >#48#return; 8348#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8350#fibo2FINAL assume true; 8354#fibo2EXIT >#50#return; 8321#L15-1 [2022-11-25 18:24:39,961 INFO L750 eck$LassoCheckResult]: Loop: 8321#L15-1 call #t~ret5 := fibo2(~n - 2);< 8431#fibo2ENTRY ~n := #in~n; 8427#L20 assume !(~n < 1); 8425#L22 assume !(1 == ~n); 8421#L25 call #t~ret6 := fibo1(~n - 1);< 8422#fibo1ENTRY ~n := #in~n; 8439#L10 assume !(~n < 1); 8440#L12 assume 1 == ~n;#res := 1; 8443#fibo1FINAL assume true; 8442#fibo1EXIT >#46#return; 8433#L25-1 call #t~ret7 := fibo1(~n - 2);< 8441#fibo1ENTRY ~n := #in~n; 8444#L10 assume !(~n < 1); 8436#L12 assume !(1 == ~n); 8323#L15 call #t~ret4 := fibo2(~n - 1);< 8429#fibo2ENTRY ~n := #in~n; 8430#L20 assume !(~n < 1); 8483#L22 assume 1 == ~n;#res := 1; 8471#fibo2FINAL assume true; 8459#fibo2EXIT >#50#return; 8321#L15-1 [2022-11-25 18:24:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash -979062994, now seen corresponding path program 1 times [2022-11-25 18:24:39,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:39,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099872464] [2022-11-25 18:24:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:39,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:39,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1176615322, now seen corresponding path program 1 times [2022-11-25 18:24:39,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:39,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63971935] [2022-11-25 18:24:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:24:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 18:24:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:24:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:40,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63971935] [2022-11-25 18:24:40,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63971935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:40,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417909409] [2022-11-25 18:24:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:40,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:40,063 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:40,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-25 18:24:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:24:40,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:40,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:24:40,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417909409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:40,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:40,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-11-25 18:24:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864259274] [2022-11-25 18:24:40,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:40,199 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 18:24:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:24:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:40,200 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. cyclomatic complexity: 42 Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 18:24:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:40,279 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2022-11-25 18:24:40,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 213 transitions. [2022-11-25 18:24:40,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-11-25 18:24:40,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 160 states and 179 transitions. [2022-11-25 18:24:40,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2022-11-25 18:24:40,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2022-11-25 18:24:40,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 179 transitions. [2022-11-25 18:24:40,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:40,283 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 179 transitions. [2022-11-25 18:24:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 179 transitions. [2022-11-25 18:24:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-11-25 18:24:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 114 states have internal predecessors, (118), 33 states have call successors, (34), 26 states have call predecessors, (34), 19 states have return successors, (25), 17 states have call predecessors, (25), 24 states have call successors, (25) [2022-11-25 18:24:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2022-11-25 18:24:40,288 INFO L240 hiAutomatonCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-11-25 18:24:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:24:40,289 INFO L428 stractBuchiCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-11-25 18:24:40,289 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-25 18:24:40,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158 states and 177 transitions. [2022-11-25 18:24:40,291 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-11-25 18:24:40,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:40,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:40,292 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:40,292 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:40,292 INFO L748 eck$LassoCheckResult]: Stem: 8853#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8854#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8886#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8924#fibo1ENTRY ~n := #in~n; 8959#L10 assume !(~n < 1); 8958#L12 assume !(1 == ~n); 8888#L15 call #t~ret4 := fibo2(~n - 1);< 8955#fibo2ENTRY ~n := #in~n; 8951#L20 assume !(~n < 1); 8949#L22 assume !(1 == ~n); 8899#L25 call #t~ret6 := fibo1(~n - 1);< 8947#fibo1ENTRY ~n := #in~n; 8885#L10 assume !(~n < 1); 8908#L12 assume !(1 == ~n); 8963#L15 call #t~ret4 := fibo2(~n - 1);< 8964#fibo2ENTRY ~n := #in~n; 8977#L20 assume !(~n < 1); 8971#L22 assume 1 == ~n;#res := 1; 8968#fibo2FINAL assume true; 8962#fibo2EXIT >#50#return; 8953#L15-1 call #t~ret5 := fibo2(~n - 2);< 8954#fibo2ENTRY ~n := #in~n; 8957#L20 assume ~n < 1;#res := 0; 8956#fibo2FINAL assume true; 8952#fibo2EXIT >#52#return; 8950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8948#fibo1FINAL assume true; 8946#fibo1EXIT >#46#return; 8873#L25-1 call #t~ret7 := fibo1(~n - 2);< 8881#fibo1ENTRY ~n := #in~n; 8882#L10 assume !(~n < 1); 8901#L12 assume 1 == ~n;#res := 1; 8872#fibo1FINAL assume true; 8874#fibo1EXIT >#48#return; 8887#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8889#fibo2FINAL assume true; 8916#fibo2EXIT >#50#return; 8894#L15-1 call #t~ret5 := fibo2(~n - 2);< 8897#fibo2ENTRY [2022-11-25 18:24:40,292 INFO L750 eck$LassoCheckResult]: Loop: 8897#fibo2ENTRY ~n := #in~n; 8917#L20 assume !(~n < 1); 9002#L22 assume !(1 == ~n); 8893#L25 call #t~ret6 := fibo1(~n - 1);< 8896#fibo1ENTRY ~n := #in~n; 8984#L10 assume !(~n < 1); 8902#L12 assume !(1 == ~n); 8856#L15 call #t~ret4 := fibo2(~n - 1);< 8912#fibo2ENTRY ~n := #in~n; 8913#L20 assume !(~n < 1); 8855#L22 assume 1 == ~n;#res := 1; 8857#fibo2FINAL assume true; 8988#fibo2EXIT >#50#return; 8895#L15-1 call #t~ret5 := fibo2(~n - 2);< 8897#fibo2ENTRY [2022-11-25 18:24:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash -286181691, now seen corresponding path program 2 times [2022-11-25 18:24:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:40,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637190133] [2022-11-25 18:24:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:40,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:40,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:40,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash -767060718, now seen corresponding path program 1 times [2022-11-25 18:24:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:40,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456817692] [2022-11-25 18:24:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:40,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:24:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:24:40,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:24:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1541383382, now seen corresponding path program 3 times [2022-11-25 18:24:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:40,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983868655] [2022-11-25 18:24:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 18:24:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:24:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 18:24:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 18:24:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:40,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983868655] [2022-11-25 18:24:40,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983868655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297768389] [2022-11-25 18:24:40,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:24:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:40,471 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:40,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-25 18:24:40,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:24:40,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:40,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:40,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:24:40,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:24:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297768389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:40,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 13 [2022-11-25 18:24:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549095111] [2022-11-25 18:24:40,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:40,905 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:40,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:40,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:40,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:40,906 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 18:24:40,906 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:40,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:40,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:40,906 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2022-11-25 18:24:40,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:40,906 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:40,907 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,910 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,912 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,917 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,919 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,922 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:40,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:40,961 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 18:24:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:40,967 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:40,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-25 18:24:40,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:40,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:40,988 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:40,988 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:40,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:40,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:40,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:40,992 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:40,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-25 18:24:40,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:40,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,009 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:41,009 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:41,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,019 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:41,021 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-25 18:24:41,035 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:41,035 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:41,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,039 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-11-25 18:24:41,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:41,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:41,057 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:41,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2022-11-25 18:24:41,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,061 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-25 18:24:41,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:41,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,075 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:41,076 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:41,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2022-11-25 18:24:41,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,079 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-25 18:24:41,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:41,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,096 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 18:24:41,096 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 18:24:41,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,100 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-25 18:24:41,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 18:24:41,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-11-25 18:24:41,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,128 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-25 18:24:41,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 18:24:41,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 18:24:41,162 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 18:24:41,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,168 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 18:24:41,168 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 18:24:41,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 18:24:41,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 18:24:41,169 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 18:24:41,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 18:24:41,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 18:24:41,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2022-11-25 18:24:41,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 18:24:41,169 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 18:24:41,170 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,173 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,175 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,178 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,182 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,187 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,189 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 18:24:41,233 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 18:24:41,233 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 18:24:41,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,234 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-25 18:24:41,239 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:41,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:41,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:41,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:41,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:41,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:41,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:41,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:41,257 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:41,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2022-11-25 18:24:41,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,262 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:41,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-25 18:24:41,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:41,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:41,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:41,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:41,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:41,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:41,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:41,284 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:41,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,288 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-11-25 18:24:41,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:41,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:41,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:41,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:41,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:41,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:41,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:41,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:41,303 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:41,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,307 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-11-25 18:24:41,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:41,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:41,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:41,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:41,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:41,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:41,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:41,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:41,333 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:41,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2022-11-25 18:24:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,337 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-25 18:24:41,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:41,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:41,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:41,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:41,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:41,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:41,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:41,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:41,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 18:24:41,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2022-11-25 18:24:41,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,355 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-25 18:24:41,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 18:24:41,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 18:24:41,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 18:24:41,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 18:24:41,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 18:24:41,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 18:24:41,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 18:24:41,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 18:24:41,399 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 18:24:41,401 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 18:24:41,401 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 18:24:41,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 18:24:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:41,406 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:41,407 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 18:24:41,407 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 18:24:41,407 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 18:24:41,407 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-11-25 18:24:41,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-25 18:24:41,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:41,411 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 18:24:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:41,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:24:41,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:41,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:24:41,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:41,885 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-25 18:24:41,885 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:24:42,188 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-11-25 18:24:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:24:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-11-25 18:24:42,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-25 18:24:42,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:42,190 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:24:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:42,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:24:42,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:42,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:42,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:24:42,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:42,709 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-25 18:24:42,710 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:24:42,960 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-11-25 18:24:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:24:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-11-25 18:24:42,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-25 18:24:42,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:42,963 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 18:24:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:43,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:24:43,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:43,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:24:43,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:43,437 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-25 18:24:43,437 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:24:43,740 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 338 states and 380 transitions. Complement of second has 29 states. [2022-11-25 18:24:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-25 18:24:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:24:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2022-11-25 18:24:43,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 14 letters. [2022-11-25 18:24:43,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:43,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 52 letters. Loop has 14 letters. [2022-11-25 18:24:43,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:43,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 28 letters. [2022-11-25 18:24:43,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 18:24:43,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 380 transitions. [2022-11-25 18:24:43,748 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-11-25 18:24:43,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 220 states and 255 transitions. [2022-11-25 18:24:43,750 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2022-11-25 18:24:43,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2022-11-25 18:24:43,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 255 transitions. [2022-11-25 18:24:43,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:43,751 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 255 transitions. [2022-11-25 18:24:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 255 transitions. [2022-11-25 18:24:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2022-11-25 18:24:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.125) internal successors, (126), 120 states have internal predecessors, (126), 35 states have call successors, (36), 28 states have call predecessors, (36), 21 states have return successors, (27), 19 states have call predecessors, (27), 26 states have call successors, (27) [2022-11-25 18:24:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2022-11-25 18:24:43,756 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 189 transitions. [2022-11-25 18:24:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 18:24:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:24:43,757 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 18:24:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:43,961 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2022-11-25 18:24:43,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 198 transitions. [2022-11-25 18:24:43,963 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-11-25 18:24:43,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 159 states and 178 transitions. [2022-11-25 18:24:43,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-25 18:24:43,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-25 18:24:43,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 178 transitions. [2022-11-25 18:24:43,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 18:24:43,966 INFO L218 hiAutomatonCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-11-25 18:24:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 178 transitions. [2022-11-25 18:24:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-11-25 18:24:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 113 states have internal predecessors, (120), 32 states have call successors, (32), 27 states have call predecessors, (32), 19 states have return successors, (23), 16 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-25 18:24:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2022-11-25 18:24:43,970 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-11-25 18:24:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:24:43,971 INFO L428 stractBuchiCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-11-25 18:24:43,971 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-25 18:24:43,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 175 transitions. [2022-11-25 18:24:43,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-11-25 18:24:43,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 18:24:43,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 18:24:43,973 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:43,973 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:43,974 INFO L748 eck$LassoCheckResult]: Stem: 11190#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11191#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11223#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11245#fibo1ENTRY ~n := #in~n; 11236#L10 assume !(~n < 1); 11231#L12 assume !(1 == ~n); 11198#L15 call #t~ret4 := fibo2(~n - 1);< 11238#fibo2ENTRY ~n := #in~n; 11346#L20 assume !(~n < 1); 11197#L22 assume !(1 == ~n); 11199#L25 call #t~ret6 := fibo1(~n - 1);< 11280#fibo1ENTRY ~n := #in~n; 11279#L10 assume !(~n < 1); 11278#L12 assume !(1 == ~n); 11275#L15 call #t~ret4 := fibo2(~n - 1);< 11276#fibo2ENTRY ~n := #in~n; 11284#L20 assume !(~n < 1); 11283#L22 assume 1 == ~n;#res := 1; 11282#fibo2FINAL assume true; 11274#fibo2EXIT >#50#return; 11271#L15-1 call #t~ret5 := fibo2(~n - 2);< 11272#fibo2ENTRY ~n := #in~n; 11277#L20 assume ~n < 1;#res := 0; 11273#fibo2FINAL assume true; 11270#fibo2EXIT >#52#return; 11269#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11268#fibo1FINAL assume true; 11266#fibo1EXIT >#46#return; 11204#L25-1 call #t~ret7 := fibo1(~n - 2);< 11216#fibo1ENTRY ~n := #in~n; 11259#L10 assume !(~n < 1); 11258#L12 assume !(1 == ~n); 11215#L15 call #t~ret4 := fibo2(~n - 1);< 11257#fibo2ENTRY ~n := #in~n; 11255#L20 assume !(~n < 1); 11253#L22 assume 1 == ~n;#res := 1; 11232#fibo2FINAL assume true; 11233#fibo2EXIT >#50#return; 11213#L15-1 [2022-11-25 18:24:43,974 INFO L750 eck$LassoCheckResult]: Loop: 11213#L15-1 call #t~ret5 := fibo2(~n - 2);< 11287#fibo2ENTRY ~n := #in~n; 11309#L20 assume !(~n < 1); 11336#L22 assume !(1 == ~n); 11201#L25 call #t~ret6 := fibo1(~n - 1);< 11224#fibo1ENTRY ~n := #in~n; 11339#L10 assume !(~n < 1); 11297#L12 assume !(1 == ~n); 11211#L15 call #t~ret4 := fibo2(~n - 1);< 11293#fibo2ENTRY ~n := #in~n; 11316#L20 assume !(~n < 1); 11315#L22 assume 1 == ~n;#res := 1; 11234#fibo2FINAL assume true; 11235#fibo2EXIT >#50#return; 11210#L15-1 call #t~ret5 := fibo2(~n - 2);< 11288#fibo2ENTRY ~n := #in~n; 11333#L20 assume ~n < 1;#res := 0; 11332#fibo2FINAL assume true; 11286#fibo2EXIT >#52#return; 11243#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11200#fibo1FINAL assume true; 11206#fibo1EXIT >#46#return; 11203#L25-1 call #t~ret7 := fibo1(~n - 2);< 11214#fibo1ENTRY ~n := #in~n; 11311#L10 assume !(~n < 1); 11310#L12 assume !(1 == ~n); 11212#L15 call #t~ret4 := fibo2(~n - 1);< 11322#fibo2ENTRY ~n := #in~n; 11326#L20 assume !(~n < 1); 11324#L22 assume 1 == ~n;#res := 1; 11321#fibo2FINAL assume true; 11291#fibo2EXIT >#50#return; 11213#L15-1 [2022-11-25 18:24:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 772882902, now seen corresponding path program 1 times [2022-11-25 18:24:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:43,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924472548] [2022-11-25 18:24:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:24:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 18:24:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:24:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924472548] [2022-11-25 18:24:44,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924472548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224653378] [2022-11-25 18:24:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:44,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:44,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:44,073 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:44,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-25 18:24:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:44,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:44,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:44,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224653378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:44,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:44,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2022-11-25 18:24:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169200573] [2022-11-25 18:24:44,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:44,292 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 18:24:44,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1807088251, now seen corresponding path program 1 times [2022-11-25 18:24:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441820248] [2022-11-25 18:24:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:24:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:24:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:24:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 18:24:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 18:24:44,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441820248] [2022-11-25 18:24:44,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441820248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:44,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344490781] [2022-11-25 18:24:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:44,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:44,451 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:44,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-25 18:24:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:24:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:24:44,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:24:44,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344490781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:44,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:24:44,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2022-11-25 18:24:44,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492468364] [2022-11-25 18:24:44,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:44,797 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 18:24:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 18:24:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-25 18:24:44,798 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. cyclomatic complexity: 23 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 18:24:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:44,969 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-11-25 18:24:44,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 44 transitions. [2022-11-25 18:24:44,969 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 18:24:44,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2022-11-25 18:24:44,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 18:24:44,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 18:24:44,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 18:24:44,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:44,970 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:24:44,970 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:24:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:24:44,970 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:24:44,970 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-25 18:24:44,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 18:24:44,971 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 18:24:44,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 18:24:44,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 06:24:44 BoogieIcfgContainer [2022-11-25 18:24:44,978 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 18:24:44,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:24:44,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:24:44,979 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:24:44,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:25" (3/4) ... [2022-11-25 18:24:44,983 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:24:44,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:24:44,984 INFO L158 Benchmark]: Toolchain (without parser) took 19898.19ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 145.9MB in the beginning and 126.2MB in the end (delta: 19.7MB). Peak memory consumption was 105.5MB. Max. memory is 16.1GB. [2022-11-25 18:24:44,984 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:24:44,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.10ms. Allocated memory is still 186.6MB. Free memory was 145.9MB in the beginning and 135.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:24:44,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.86ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 134.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:24:44,985 INFO L158 Benchmark]: Boogie Preprocessor took 18.71ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 133.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:24:44,985 INFO L158 Benchmark]: RCFGBuilder took 372.92ms. Allocated memory is still 186.6MB. Free memory was 133.2MB in the beginning and 123.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:24:44,985 INFO L158 Benchmark]: BuchiAutomizer took 19236.31ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 123.3MB in the beginning and 126.2MB in the end (delta: -2.9MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2022-11-25 18:24:44,986 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 270.5MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:24:44,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.10ms. Allocated memory is still 186.6MB. Free memory was 145.9MB in the beginning and 135.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.86ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 134.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.71ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 133.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 372.92ms. Allocated memory is still 186.6MB. Free memory was 133.2MB in the beginning and 123.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 19236.31ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 123.3MB in the beginning and 126.2MB in the end (delta: -2.9MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 270.5MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 10 locations. 8 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 19.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 11.4s. Construction of modules took 1.6s. Büchi inclusion checks took 5.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 264 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 676 mSDsluCounter, 985 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2158 IncrementalHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 330 mSDtfsCounter, 2158 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp95 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp83 dnf100 smp100 tf111 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 61ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-25 18:24:45,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-11-25 18:24:45,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-11-25 18:24:45,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-11-25 18:24:45,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-25 18:24:45,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-11-25 18:24:46,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-11-25 18:24:46,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:46,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-25 18:24:46,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-25 18:24:46,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:47,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fdd4523-43ce-4fd6-8239-cd4feeb84c04/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE