./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:56:09,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:56:09,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:56:09,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:56:09,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:56:09,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:56:09,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:56:09,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:56:09,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:56:09,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:56:09,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:56:09,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:56:09,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:56:09,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:56:09,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:56:09,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:56:09,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:56:09,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:56:09,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:56:09,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:56:09,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:56:09,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:56:09,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:56:09,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:56:09,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:56:09,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:56:09,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:56:09,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:56:09,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:56:09,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:56:09,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:56:09,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:56:09,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:56:09,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:56:09,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:56:09,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:56:09,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:56:09,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:56:09,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:56:09,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:56:09,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:56:09,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-18 20:56:09,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:56:09,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:56:09,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:56:09,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:56:09,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:56:09,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:56:09,420 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:56:09,421 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 20:56:09,421 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 20:56:09,421 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 20:56:09,421 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 20:56:09,422 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 20:56:09,422 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 20:56:09,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:56:09,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:56:09,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:56:09,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:56:09,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:56:09,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:56:09,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 20:56:09,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 20:56:09,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 20:56:09,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:56:09,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:56:09,430 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 20:56:09,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:56:09,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 20:56:09,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:56:09,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:56:09,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:56:09,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:56:09,434 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 20:56:09,434 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_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2022-11-18 20:56:09,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:56:09,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:56:09,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:56:09,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:56:09,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:56:09,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-11-18 20:56:09,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/data/154e09588/41502f3c7c644211bb69a82759ad422f/FLAG4f77352dd [2022-11-18 20:56:10,423 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:56:10,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-11-18 20:56:10,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/data/154e09588/41502f3c7c644211bb69a82759ad422f/FLAG4f77352dd [2022-11-18 20:56:10,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/data/154e09588/41502f3c7c644211bb69a82759ad422f [2022-11-18 20:56:10,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:56:10,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:56:10,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:10,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:56:10,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:56:10,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:10" (1/1) ... [2022-11-18 20:56:10,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401eb36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:10, skipping insertion in model container [2022-11-18 20:56:10,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:56:10" (1/1) ... [2022-11-18 20:56:10,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:56:10,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:56:11,049 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-11-18 20:56:11,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:11,064 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:56:11,078 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-11-18 20:56:11,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:56:11,093 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:56:11,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11 WrapperNode [2022-11-18 20:56:11,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:56:11,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:11,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:56:11,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:56:11,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,134 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-18 20:56:11,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:56:11,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:56:11,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:56:11,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:56:11,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:56:11,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:56:11,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:56:11,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:56:11,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (1/1) ... [2022-11-18 20:56:11,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:11,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:11,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:11,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 20:56:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:56:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:56:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:56:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:56:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-18 20:56:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-18 20:56:11,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:56:11,321 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:56:11,421 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:56:11,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:56:11,428 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:56:11,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:11 BoogieIcfgContainer [2022-11-18 20:56:11,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:56:11,432 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 20:56:11,432 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 20:56:11,439 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 20:56:11,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:56:11,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:56:10" (1/3) ... [2022-11-18 20:56:11,442 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45ad786d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:56:11, skipping insertion in model container [2022-11-18 20:56:11,442 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:56:11,442 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:56:11" (2/3) ... [2022-11-18 20:56:11,443 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45ad786d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:56:11, skipping insertion in model container [2022-11-18 20:56:11,443 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:56:11,443 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:11" (3/3) ... [2022-11-18 20:56:11,445 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2022-11-18 20:56:11,507 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 20:56:11,508 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 20:56:11,508 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 20:56:11,508 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 20:56:11,508 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 20:56:11,508 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 20:56:11,508 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 20:56:11,509 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 20:56:11,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:56:11,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 20:56:11,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:11,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:11,554 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:56:11,555 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:56:11,555 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 20:56:11,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:56:11,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 20:56:11,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:11,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:11,558 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:56:11,559 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:56:11,569 INFO L748 eck$LassoCheckResult]: Stem: 3#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(12, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-18 20:56:11,573 INFO L750 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-11-18 20:56:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-18 20:56:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:11,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764340076] [2022-11-18 20:56:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:11,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:11,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:11,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:11,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-18 20:56:11,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047908599] [2022-11-18 20:56:11,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:11,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:11,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:11,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-18 20:56:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:11,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856376687] [2022-11-18 20:56:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:11,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:11,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:12,003 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:12,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:12,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:12,015 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:12,015 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:56:12,015 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,015 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:12,016 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:12,016 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-11-18 20:56:12,016 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:12,016 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:12,043 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,076 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,083 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,089 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,103 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,171 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:12,171 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:56:12,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 20:56:12,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:12,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:12,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:12,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:12,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-18 20:56:12,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:12,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:12,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 20:56:12,265 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:12,265 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:12,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 20:56:12,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:12,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:12,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:12,299 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:12,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-11-18 20:56:12,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:12,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:12,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 20:56:12,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 20:56:12,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:56:12,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:12,449 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:56:12,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,455 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:12,455 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:12,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:12,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:12,455 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:56:12,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:12,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:12,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-11-18 20:56:12,456 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:12,456 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:12,458 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,462 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,465 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,468 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,479 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:12,530 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:12,535 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:56:12,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 20:56:12,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:12,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:12,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:12,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:12,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:12,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:12,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:12,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:12,615 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:12,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 20:56:12,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:12,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:12,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:12,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:12,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:12,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:12,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:12,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:12,746 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:12,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 20:56:12,759 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:12,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:12,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:12,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:12,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:12,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:12,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:12,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:12,784 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:12,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,804 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:12,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 20:56:12,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:12,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:12,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:12,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:12,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:12,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:12,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:12,829 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:56:12,869 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:56:12,869 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 20:56:12,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:12,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:12,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:12,912 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:56:12,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:56:12,913 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:56:12,913 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-18 20:56:12,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 20:56:12,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:12,926 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:56:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:13,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:56:13,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:56:13,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:13,217 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-18 20:56:13,219 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:13,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-18 20:56:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-18 20:56:13,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-18 20:56:13,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:13,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-18 20:56:13,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:13,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-18 20:56:13,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:13,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-18 20:56:13,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 20:56:13,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-18 20:56:13,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-18 20:56:13,409 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-18 20:56:13,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-18 20:56:13,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:13,411 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-18 20:56:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-18 20:56:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-18 20:56:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-18 20:56:13,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-18 20:56:13,444 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-18 20:56:13,445 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 20:56:13,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-18 20:56:13,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 20:56:13,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:13,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:13,448 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:13,448 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:13,448 INFO L748 eck$LassoCheckResult]: Stem: 121#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(12, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 131#fiboENTRY ~n := #in~n; 132#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 127#fiboENTRY ~n := #in~n; 133#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#33#return; 124#L13-1 [2022-11-18 20:56:13,448 INFO L750 eck$LassoCheckResult]: Loop: 124#L13-1 call #t~ret5 := fibo(~n - 2);< 125#fiboENTRY ~n := #in~n; 140#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 123#L13 call #t~ret4 := fibo(~n - 1);< 125#fiboENTRY ~n := #in~n; 140#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 138#fiboEXIT >#33#return; 124#L13-1 [2022-11-18 20:56:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-18 20:56:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:13,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987971852] [2022-11-18 20:56:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:56:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:56:13,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:13,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987971852] [2022-11-18 20:56:13,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987971852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:13,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:13,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600094919] [2022-11-18 20:56:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:13,636 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:56:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:13,637 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-18 20:56:13,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:13,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380780727] [2022-11-18 20:56:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:13,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:56:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:56:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:13,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380780727] [2022-11-18 20:56:13,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380780727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:13,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:13,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593368410] [2022-11-18 20:56:13,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:13,732 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:56:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:13,737 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:13,827 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-18 20:56:13,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-18 20:56:13,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 20:56:13,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-18 20:56:13,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-18 20:56:13,831 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-18 20:56:13,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-18 20:56:13,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:13,832 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-18 20:56:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-18 20:56:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-18 20:56:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:56:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-18 20:56:13,836 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-18 20:56:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:56:13,838 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-18 20:56:13,838 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 20:56:13,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-18 20:56:13,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 20:56:13,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:13,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:13,841 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:13,841 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:13,841 INFO L748 eck$LassoCheckResult]: Stem: 194#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(12, 2);call #Ultimate.allocInit(12, 3); 195#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 200#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 204#fiboENTRY ~n := #in~n; 206#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 201#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 209#L10 assume 1 == ~n;#res := 1; 211#fiboFINAL assume true; 213#fiboEXIT >#33#return; 197#L13-1 [2022-11-18 20:56:13,841 INFO L750 eck$LassoCheckResult]: Loop: 197#L13-1 call #t~ret5 := fibo(~n - 2);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 215#fiboFINAL assume true; 212#fiboEXIT >#33#return; 197#L13-1 [2022-11-18 20:56:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-18 20:56:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:13,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883840556] [2022-11-18 20:56:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:56:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883840556] [2022-11-18 20:56:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883840556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:56:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595028711] [2022-11-18 20:56:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:13,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:13,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:13,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:13,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:56:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:14,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:56:14,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:14,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:14,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595028711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:14,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:56:14,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-18 20:56:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695312286] [2022-11-18 20:56:14,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:14,167 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:56:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-18 20:56:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:14,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258741681] [2022-11-18 20:56:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:14,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:14,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:14,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:14,348 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:14,349 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:14,349 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:14,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:14,349 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:56:14,349 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:14,349 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:14,349 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:14,349 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-11-18 20:56:14,350 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:14,350 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:14,351 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:14,360 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:14,364 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:14,372 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:14,419 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:14,420 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:56:14,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:14,421 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:14,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:14,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:14,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 20:56:14,460 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:14,460 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:14,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:14,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:14,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:14,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:14,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:14,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:14,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 20:56:14,519 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:14,519 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:14,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:14,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:14,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:14,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:14,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:14,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:14,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 20:56:14,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:14,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:14,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:14,566 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:14,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:56:14,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:14,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 20:56:15,262 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:56:15,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-11-18 20:56:15,266 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:15,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:15,266 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:15,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:15,266 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:56:15,267 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:15,267 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:15,267 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:15,267 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-11-18 20:56:15,267 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:15,267 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:15,268 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:15,280 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:15,283 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:15,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:15,346 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:15,347 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:56:15,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:15,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:15,351 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:15,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:15,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:15,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:15,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:15,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:15,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:15,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-18 20:56:15,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:15,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:15,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:15,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:15,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:15,395 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:15,409 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:15,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-18 20:56:15,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:15,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:15,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:15,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:15,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:15,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:15,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:15,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:15,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:15,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:15,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:15,452 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:15,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:15,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-18 20:56:15,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:15,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:15,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:15,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:15,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:15,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:15,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:15,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:56:15,487 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:56:15,488 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 20:56:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:15,491 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:15,503 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:56:15,503 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:56:15,503 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:56:15,503 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-18 20:56:15,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-18 20:56:15,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:15,509 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:56:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:15,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:56:15,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:15,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:56:15,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:15,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-11-18 20:56:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:15,867 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-18 20:56:15,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:16,164 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-18 20:56:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-18 20:56:16,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-18 20:56:16,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:16,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-18 20:56:16,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:16,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-18 20:56:16,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:16,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-18 20:56:16,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-18 20:56:16,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-18 20:56:16,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-18 20:56:16,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-18 20:56:16,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-18 20:56:16,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:16,192 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-18 20:56:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-18 20:56:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-18 20:56:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-18 20:56:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-18 20:56:16,212 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-18 20:56:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:16,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:56:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:56:16,214 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:16,363 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-18 20:56:16,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-18 20:56:16,368 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-18 20:56:16,372 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-18 20:56:16,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-18 20:56:16,373 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-18 20:56:16,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-18 20:56:16,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:16,373 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-18 20:56:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-18 20:56:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-18 20:56:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-18 20:56:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-18 20:56:16,386 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-18 20:56:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:56:16,387 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-18 20:56:16,388 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 20:56:16,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-18 20:56:16,390 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-18 20:56:16,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:16,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:16,391 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:16,392 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:16,392 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-18 20:56:16,392 INFO L750 eck$LassoCheckResult]: Loop: 820#L13-1 call #t~ret5 := fibo(~n - 2);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume 1 == ~n;#res := 1; 823#fiboFINAL assume true; 874#fiboEXIT >#33#return; 820#L13-1 [2022-11-18 20:56:16,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:16,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-18 20:56:16,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:16,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871041117] [2022-11-18 20:56:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:16,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:56:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:56:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:56:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:56:16,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:16,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871041117] [2022-11-18 20:56:16,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871041117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:56:16,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100094904] [2022-11-18 20:56:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:16,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:16,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:16,646 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:16,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:56:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:56:16,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:56:16,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:56:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100094904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:17,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:56:17,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-11-18 20:56:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59097610] [2022-11-18 20:56:17,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:17,154 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:56:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-18 20:56:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:17,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096496569] [2022-11-18 20:56:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:17,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:17,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:17,312 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:17,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:17,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:17,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:17,312 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:56:17,313 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:17,313 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:17,313 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:17,313 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-11-18 20:56:17,313 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:17,313 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:17,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:17,338 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:17,346 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:17,349 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:17,404 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:17,404 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:56:17,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:17,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:17,411 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:17,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:17,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:17,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-18 20:56:17,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:17,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:17,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:17,445 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:17,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:17,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:17,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 20:56:17,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:17,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:17,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:17,489 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:17,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:56:17,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:17,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-18 20:56:18,263 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:56:18,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:18,267 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:18,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:18,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:18,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:18,268 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:56:18,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:18,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:18,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:18,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-11-18 20:56:18,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:18,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:18,269 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:18,275 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:18,282 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:18,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:18,339 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:18,339 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:56:18,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:18,341 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:18,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:18,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 20:56:18,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:18,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:18,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:18,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:18,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:18,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:18,368 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:18,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:18,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:18,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:18,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:18,403 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:18,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 20:56:18,406 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:18,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:18,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:18,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:18,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:18,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:18,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:18,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:18,445 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:56:18,448 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 20:56:18,448 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:56:18,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:18,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:18,455 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:18,460 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:56:18,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:56:18,460 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:56:18,460 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-18 20:56:18,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 20:56:18,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:18,470 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:56:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:18,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:56:18,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:18,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:56:18,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:18,904 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-18 20:56:18,904 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:19,136 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-18 20:56:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-18 20:56:19,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-18 20:56:19,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:19,139 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:56:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:19,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:56:19,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:19,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:19,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:56:19,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:19,576 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-18 20:56:19,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:19,760 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-18 20:56:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-18 20:56:19,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-18 20:56:19,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:19,766 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:56:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:19,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:56:19,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:20,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:56:20,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:20,146 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 6 loop predicates [2022-11-18 20:56:20,147 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:20,430 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-18 20:56:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 20:56:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-18 20:56:20,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-18 20:56:20,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:20,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-18 20:56:20,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:20,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-18 20:56:20,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:20,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-18 20:56:20,455 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-18 20:56:20,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-18 20:56:20,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-18 20:56:20,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-18 20:56:20,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-18 20:56:20,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:20,469 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-18 20:56:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-18 20:56:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-18 20:56:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-18 20:56:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-18 20:56:20,509 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-18 20:56:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:56:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:56:20,510 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 20:56:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:21,072 INFO L93 Difference]: Finished difference Result 658 states and 956 transitions. [2022-11-18 20:56:21,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 956 transitions. [2022-11-18 20:56:21,086 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-18 20:56:21,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 633 states and 920 transitions. [2022-11-18 20:56:21,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 276 [2022-11-18 20:56:21,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2022-11-18 20:56:21,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 633 states and 920 transitions. [2022-11-18 20:56:21,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:21,104 INFO L218 hiAutomatonCegarLoop]: Abstraction has 633 states and 920 transitions. [2022-11-18 20:56:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states and 920 transitions. [2022-11-18 20:56:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 600. [2022-11-18 20:56:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 367 states have (on average 1.1662125340599454) internal successors, (428), 386 states have internal predecessors, (428), 144 states have call successors, (158), 73 states have call predecessors, (158), 89 states have return successors, (293), 140 states have call predecessors, (293), 135 states have call successors, (293) [2022-11-18 20:56:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 879 transitions. [2022-11-18 20:56:21,167 INFO L240 hiAutomatonCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-18 20:56:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:56:21,168 INFO L428 stractBuchiCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-18 20:56:21,169 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 20:56:21,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 600 states and 879 transitions. [2022-11-18 20:56:21,174 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-18 20:56:21,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:21,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:21,175 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:21,176 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:56:21,176 INFO L748 eck$LassoCheckResult]: Stem: 4112#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(12, 2);call #Ultimate.allocInit(12, 3); 4113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4129#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4130#fiboENTRY ~n := #in~n; 4194#L8 assume !(~n < 1); 4193#L10 assume !(1 == ~n); 4189#L13 call #t~ret4 := fibo(~n - 1);< 4192#fiboENTRY ~n := #in~n; 4191#L8 assume !(~n < 1); 4190#L10 assume !(1 == ~n); 4185#L13 call #t~ret4 := fibo(~n - 1);< 4188#fiboENTRY ~n := #in~n; 4187#L8 assume !(~n < 1); 4186#L10 assume !(1 == ~n); 4181#L13 call #t~ret4 := fibo(~n - 1);< 4184#fiboENTRY ~n := #in~n; 4183#L8 assume !(~n < 1); 4182#L10 assume !(1 == ~n); 4162#L13 call #t~ret4 := fibo(~n - 1);< 4180#fiboENTRY ~n := #in~n; 4179#L8 assume !(~n < 1); 4178#L10 assume !(1 == ~n); 4175#L13 call #t~ret4 := fibo(~n - 1);< 4177#fiboENTRY ~n := #in~n; 4176#L8 assume !(~n < 1); 4174#L10 assume !(1 == ~n); 4171#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4172#L8 assume !(~n < 1); 4310#L10 assume !(1 == ~n); 4170#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4173#L8 assume !(~n < 1); 4626#L10 assume 1 == ~n;#res := 1; 4625#fiboFINAL assume true; 4389#fiboEXIT >#33#return; 4297#L13-1 call #t~ret5 := fibo(~n - 2);< 4299#fiboENTRY ~n := #in~n; 4602#L8 assume !(~n < 1); 4378#L10 assume !(1 == ~n); 4379#L13 call #t~ret4 := fibo(~n - 1);< 4505#fiboENTRY ~n := #in~n; 4518#L8 assume !(~n < 1); 4507#L10 assume !(1 == ~n); 4508#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-18 20:56:21,176 INFO L750 eck$LassoCheckResult]: Loop: 4525#fiboENTRY ~n := #in~n; 4534#L8 assume !(~n < 1); 4530#L10 assume !(1 == ~n); 4520#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-18 20:56:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:21,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1242269160, now seen corresponding path program 1 times [2022-11-18 20:56:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:21,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465612289] [2022-11-18 20:56:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:56:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:56:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:21,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465612289] [2022-11-18 20:56:21,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465612289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:56:21,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666260498] [2022-11-18 20:56:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:21,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:21,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:21,512 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:21,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:56:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:21,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:56:21,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:56:21,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:56:21,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666260498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:21,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:56:21,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 24 [2022-11-18 20:56:21,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207903441] [2022-11-18 20:56:21,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:21,996 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:56:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-18 20:56:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:21,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288186716] [2022-11-18 20:56:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:22,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:22,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:22,044 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:22,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:22,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:22,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:22,045 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:56:22,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:22,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:22,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-11-18 20:56:22,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:22,045 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:22,046 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,050 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,052 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,054 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,061 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,108 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:22,108 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:56:22,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,111 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 20:56:22,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:22,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:22,129 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:22,129 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:22,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,133 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-18 20:56:22,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:22,137 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:22,149 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:22,149 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:22,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,153 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-18 20:56:22,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:22,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:22,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:22,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:22,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,172 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:22,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:22,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-18 20:56:22,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,192 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:56:22,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:22,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-18 20:56:22,298 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:56:22,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,307 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:22,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:22,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:22,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:22,308 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:56:22,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:22,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:22,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-11-18 20:56:22,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:22,308 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:22,309 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,316 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,319 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:22,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:22,367 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:56:22,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,369 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 20:56:22,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:22,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:22,383 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:22,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:22,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:22,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:22,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:22,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:22,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:22,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,420 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:22,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 20:56:22,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:22,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:22,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:22,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:22,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:22,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:22,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:22,463 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:22,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,475 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-18 20:56:22,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:22,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:22,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:22,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:22,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:22,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:22,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:22,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:22,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:22,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-18 20:56:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,500 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-18 20:56:22,502 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:22,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:22,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:22,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:22,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:22,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:22,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:22,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:22,539 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:22,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,548 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:22,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-18 20:56:22,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:22,567 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:22,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:22,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:22,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:22,568 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:22,568 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:22,595 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:56:22,599 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 20:56:22,599 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 20:56:22,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:22,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:22,603 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:22,604 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:56:22,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:56:22,604 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:56:22,604 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-18 20:56:22,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-18 20:56:22,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:22,615 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:56:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:22,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:56:22,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:22,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:56:22,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:22,864 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-18 20:56:22,864 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:22,935 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-18 20:56:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-18 20:56:22,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-18 20:56:22,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:22,938 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:56:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:23,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:56:23,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:23,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:56:23,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:23,199 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-18 20:56:23,199 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:23,278 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-18 20:56:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-18 20:56:23,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-18 20:56:23,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:23,280 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:56:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:23,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:56:23,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:23,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:23,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:56:23,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:23,562 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 3 loop predicates [2022-11-18 20:56:23,562 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:23,662 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 811 states and 1113 transitions. Complement of second has 14 states. [2022-11-18 20:56:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-18 20:56:23,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-18 20:56:23,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:23,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2022-11-18 20:56:23,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:23,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2022-11-18 20:56:23,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:23,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 811 states and 1113 transitions. [2022-11-18 20:56:23,678 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-18 20:56:23,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 811 states to 662 states and 952 transitions. [2022-11-18 20:56:23,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2022-11-18 20:56:23,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2022-11-18 20:56:23,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 662 states and 952 transitions. [2022-11-18 20:56:23,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:23,689 INFO L218 hiAutomatonCegarLoop]: Abstraction has 662 states and 952 transitions. [2022-11-18 20:56:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states and 952 transitions. [2022-11-18 20:56:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 632. [2022-11-18 20:56:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 394 states have (on average 1.1548223350253808) internal successors, (455), 418 states have internal predecessors, (455), 144 states have call successors, (158), 73 states have call predecessors, (158), 94 states have return successors, (303), 140 states have call predecessors, (303), 135 states have call successors, (303) [2022-11-18 20:56:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 916 transitions. [2022-11-18 20:56:23,714 INFO L240 hiAutomatonCegarLoop]: Abstraction has 632 states and 916 transitions. [2022-11-18 20:56:23,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:56:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:56:23,716 INFO L87 Difference]: Start difference. First operand 632 states and 916 transitions. Second operand has 24 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 16 states have internal predecessors, (40), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:56:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:24,216 INFO L93 Difference]: Finished difference Result 901 states and 1327 transitions. [2022-11-18 20:56:24,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 901 states and 1327 transitions. [2022-11-18 20:56:24,230 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-18 20:56:24,246 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 901 states to 858 states and 1265 transitions. [2022-11-18 20:56:24,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2022-11-18 20:56:24,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2022-11-18 20:56:24,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 858 states and 1265 transitions. [2022-11-18 20:56:24,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:24,248 INFO L218 hiAutomatonCegarLoop]: Abstraction has 858 states and 1265 transitions. [2022-11-18 20:56:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states and 1265 transitions. [2022-11-18 20:56:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 789. [2022-11-18 20:56:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 491 states have (on average 1.1344195519348268) internal successors, (557), 520 states have internal predecessors, (557), 190 states have call successors, (206), 98 states have call predecessors, (206), 108 states have return successors, (366), 170 states have call predecessors, (366), 178 states have call successors, (366) [2022-11-18 20:56:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1129 transitions. [2022-11-18 20:56:24,285 INFO L240 hiAutomatonCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-18 20:56:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:56:24,288 INFO L428 stractBuchiCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-18 20:56:24,288 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 20:56:24,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 789 states and 1129 transitions. [2022-11-18 20:56:24,298 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-18 20:56:24,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:56:24,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:56:24,302 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:24,302 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-18 20:56:24,303 INFO L748 eck$LassoCheckResult]: Stem: 9124#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(12, 2);call #Ultimate.allocInit(12, 3); 9125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 9141#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 9142#fiboENTRY ~n := #in~n; 9347#L8 assume !(~n < 1); 9339#L10 assume !(1 == ~n); 9336#L13 call #t~ret4 := fibo(~n - 1);< 9337#fiboENTRY ~n := #in~n; 9382#L8 assume !(~n < 1); 9380#L10 assume !(1 == ~n); 9324#L13 call #t~ret4 := fibo(~n - 1);< 9376#fiboENTRY ~n := #in~n; 9669#L8 assume !(~n < 1); 9659#L10 assume !(1 == ~n); 9369#L13 call #t~ret4 := fibo(~n - 1);< 9445#fiboENTRY ~n := #in~n; 9463#L8 assume !(~n < 1); 9461#L10 assume !(1 == ~n); 9453#L13 call #t~ret4 := fibo(~n - 1);< 9454#fiboENTRY ~n := #in~n; 9526#L8 assume !(~n < 1); 9524#L10 assume !(1 == ~n); 9449#L13 call #t~ret4 := fibo(~n - 1);< 9522#fiboENTRY ~n := #in~n; 9602#L8 assume !(~n < 1); 9598#L10 assume !(1 == ~n); 9167#L13 call #t~ret4 := fibo(~n - 1);< 9590#fiboENTRY ~n := #in~n; 9629#L8 assume !(~n < 1); 9628#L10 assume !(1 == ~n); 9594#L13 call #t~ret4 := fibo(~n - 1);< 9627#fiboENTRY ~n := #in~n; 9676#L8 assume !(~n < 1); 9675#L10 assume !(1 == ~n); 9636#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9667#L8 assume !(~n < 1); 9666#L10 assume !(1 == ~n); 9637#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9668#L8 assume !(~n < 1); 9721#L10 assume 1 == ~n;#res := 1; 9719#fiboFINAL assume true; 9711#fiboEXIT >#33#return; 9705#L13-1 call #t~ret5 := fibo(~n - 2);< 9708#fiboENTRY ~n := #in~n; 9778#L8 assume !(~n < 1); 9741#L10 assume !(1 == ~n); 9162#L13 call #t~ret4 := fibo(~n - 1);< 9173#fiboENTRY ~n := #in~n; 9174#L8 assume !(~n < 1); 9849#L10 assume !(1 == ~n); 9178#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-18 20:56:24,303 INFO L750 eck$LassoCheckResult]: Loop: 9177#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-18 20:56:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash -486527177, now seen corresponding path program 2 times [2022-11-18 20:56:24,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:24,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833007198] [2022-11-18 20:56:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:56:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:56:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:24,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833007198] [2022-11-18 20:56:24,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833007198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:56:24,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645075132] [2022-11-18 20:56:24,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:56:24,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:56:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:24,782 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:56:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 20:56:24,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:56:24,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:56:24,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:56:24,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:56:24,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:56:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:56:25,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645075132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:56:25,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:56:25,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2022-11-18 20:56:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756921061] [2022-11-18 20:56:25,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:56:25,246 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 20:56:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1893846, now seen corresponding path program 3 times [2022-11-18 20:56:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:25,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050027369] [2022-11-18 20:56:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:25,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:56:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:56:25,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:56:25,316 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:25,316 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:25,316 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:25,316 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:25,316 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 20:56:25,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:25,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:25,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:25,317 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-11-18 20:56:25,317 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:25,317 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:25,318 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:25,320 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:25,330 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:25,333 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:25,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:25,385 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 20:56:25,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:25,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:25,390 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:25,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:25,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:25,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-18 20:56:25,418 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 20:56:25,418 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 20:56:25,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:25,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:25,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:25,424 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:25,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 20:56:25,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-18 20:56:25,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:25,474 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:25,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 20:56:25,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 20:56:25,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-18 20:56:26,299 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 20:56:26,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-11-18 20:56:26,303 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 20:56:26,303 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 20:56:26,303 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 20:56:26,303 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 20:56:26,303 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 20:56:26,303 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:26,303 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 20:56:26,303 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 20:56:26,303 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-11-18 20:56:26,303 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 20:56:26,303 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 20:56:26,304 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:26,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:26,309 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:26,313 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 20:56:26,370 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 20:56:26,370 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 20:56:26,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:26,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:26,372 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:26,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-18 20:56:26,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:26,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:26,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:26,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:26,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:26,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:26,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:26,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:26,387 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:26,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-18 20:56:26,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:26,391 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:26,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-18 20:56:26,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:26,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:26,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:26,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:26,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:26,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:26,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:26,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:26,428 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:26,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-11-18 20:56:26,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:26,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:26,432 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:26,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-18 20:56:26,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:26,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:26,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:26,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:26,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:26,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:26,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:26,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:26,461 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 20:56:26,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:26,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:26,465 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:26,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-18 20:56:26,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 20:56:26,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 20:56:26,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 20:56:26,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 20:56:26,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 20:56:26,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 20:56:26,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 20:56:26,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 20:56:26,484 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 20:56:26,486 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 20:56:26,486 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 20:56:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:56:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:56:26,490 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:56:26,491 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 20:56:26,491 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 20:56:26,491 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 20:56:26,491 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-18 20:56:26,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-18 20:56:26,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:26,496 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 20:56:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:26,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:56:26,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:26,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:56:26,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:26,819 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-18 20:56:26,819 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:26,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 816 states and 1157 transitions. Complement of second has 18 states. [2022-11-18 20:56:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-11-18 20:56:26,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-18 20:56:26,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:26,895 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 20:56:26,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:26,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:27,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:56:27,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:27,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:56:27,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:56:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:27,224 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-18 20:56:27,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:27,335 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 1046 states and 1479 transitions. Complement of second has 22 states. [2022-11-18 20:56:27,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-18 20:56:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-11-18 20:56:27,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-18 20:56:27,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:27,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 60 letters. Loop has 4 letters. [2022-11-18 20:56:27,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:27,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 8 letters. [2022-11-18 20:56:27,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 20:56:27,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1046 states and 1479 transitions. [2022-11-18 20:56:27,358 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-18 20:56:27,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1046 states to 967 states and 1395 transitions. [2022-11-18 20:56:27,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2022-11-18 20:56:27,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 334 [2022-11-18 20:56:27,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 967 states and 1395 transitions. [2022-11-18 20:56:27,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 20:56:27,375 INFO L218 hiAutomatonCegarLoop]: Abstraction has 967 states and 1395 transitions. [2022-11-18 20:56:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states and 1395 transitions. [2022-11-18 20:56:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 954. [2022-11-18 20:56:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 601 states have (on average 1.1231281198003327) internal successors, (675), 638 states have internal predecessors, (675), 223 states have call successors, (257), 125 states have call predecessors, (257), 130 states have return successors, (446), 190 states have call predecessors, (446), 211 states have call successors, (446) [2022-11-18 20:56:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1378 transitions. [2022-11-18 20:56:27,411 INFO L240 hiAutomatonCegarLoop]: Abstraction has 954 states and 1378 transitions. [2022-11-18 20:56:27,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:56:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:56:27,412 INFO L87 Difference]: Start difference. First operand 954 states and 1378 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 13 states have internal predecessors, (38), 11 states have call successors, (12), 12 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:27,864 INFO L93 Difference]: Finished difference Result 554 states and 654 transitions. [2022-11-18 20:56:27,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 554 states and 654 transitions. [2022-11-18 20:56:27,871 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 20:56:27,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 554 states to 0 states and 0 transitions. [2022-11-18 20:56:27,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-18 20:56:27,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-18 20:56:27,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-18 20:56:27,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:27,871 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:56:27,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:56:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:56:27,872 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:56:27,873 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-18 20:56:27,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:56:27,873 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 20:56:27,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-18 20:56:27,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:56:27 BoogieIcfgContainer [2022-11-18 20:56:27,881 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 20:56:27,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:56:27,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:56:27,882 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:56:27,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:56:11" (3/4) ... [2022-11-18 20:56:27,886 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 20:56:27,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:56:27,887 INFO L158 Benchmark]: Toolchain (without parser) took 17083.43ms. Allocated memory was 119.5MB in the beginning and 186.6MB in the end (delta: 67.1MB). Free memory was 79.1MB in the beginning and 79.2MB in the end (delta: -98.9kB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2022-11-18 20:56:27,887 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 96.1MB in the end (delta: 141.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:56:27,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.09ms. Allocated memory is still 119.5MB. Free memory was 78.9MB in the beginning and 94.7MB in the end (delta: -15.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:56:27,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.53ms. Allocated memory is still 119.5MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:56:27,889 INFO L158 Benchmark]: Boogie Preprocessor took 22.67ms. Allocated memory is still 119.5MB. Free memory was 93.2MB in the beginning and 92.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:56:27,889 INFO L158 Benchmark]: RCFGBuilder took 269.35ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 83.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:56:27,890 INFO L158 Benchmark]: BuchiAutomizer took 16449.29ms. Allocated memory was 119.5MB in the beginning and 186.6MB in the end (delta: 67.1MB). Free memory was 83.3MB in the beginning and 80.3MB in the end (delta: 3.0MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2022-11-18 20:56:27,890 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 186.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:56:27,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 96.1MB in the end (delta: 141.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.09ms. Allocated memory is still 119.5MB. Free memory was 78.9MB in the beginning and 94.7MB in the end (delta: -15.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.53ms. Allocated memory is still 119.5MB. Free memory was 94.7MB in the beginning and 93.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.67ms. Allocated memory is still 119.5MB. Free memory was 93.2MB in the beginning and 92.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.35ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 83.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 16449.29ms. Allocated memory was 119.5MB in the beginning and 186.6MB in the end (delta: 67.1MB). Free memory was 83.3MB in the beginning and 80.3MB in the end (delta: 3.0MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 186.6MB. Free memory is still 79.2MB. 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 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.3s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 9.0s. Construction of modules took 1.4s. Büchi inclusion checks took 5.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 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, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 606 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 520 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1479 IncrementalHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 520 mSolverCounterUnsat, 217 mSDtfsCounter, 1479 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 79ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-18 20:56:27,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:56:28,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-18 20:56:28,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 20:56:28,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 20:56:28,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d5628f-9e19-4215-98db-782ca695eb1f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE