./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b 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_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP --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 64bit --witnessprinter.graph.data.programhash 14cfbc3a2ba2bfe3a03d4d1ebff24b0baf1851f06dbbd2468b59e09322e4ce16 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:26:29,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:26:30,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 22:26:30,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:26:30,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:26:30,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:26:30,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:26:30,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:26:30,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:26:30,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:26:30,075 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:26:30,076 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:26:30,076 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:26:30,078 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:26:30,078 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:26:30,079 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:26:30,079 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:26:30,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:26:30,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:26:30,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:26:30,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:26:30,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:26:30,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:26:30,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:26:30,084 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:26:30,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:26:30,085 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:26:30,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:26:30,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:26:30,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:26:30,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:26:30,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:26:30,089 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:26:30,089 INFO L153 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_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14cfbc3a2ba2bfe3a03d4d1ebff24b0baf1851f06dbbd2468b59e09322e4ce16 [2023-11-06 22:26:30,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:26:30,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:26:30,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:26:30,413 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:26:30,413 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:26:30,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-numeric/Fibonacci01-2.c [2023-11-06 22:26:33,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:26:33,845 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:26:33,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/sv-benchmarks/c/termination-numeric/Fibonacci01-2.c [2023-11-06 22:26:33,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/data/b177bcaa9/ba9f192c2bf146ba95be6c60daaeb78a/FLAGef77d2fcf [2023-11-06 22:26:33,869 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/data/b177bcaa9/ba9f192c2bf146ba95be6c60daaeb78a [2023-11-06 22:26:33,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:26:33,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:26:33,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:33,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:26:33,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:26:33,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:33" (1/1) ... [2023-11-06 22:26:33,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ff7848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33, skipping insertion in model container [2023-11-06 22:26:33,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:33" (1/1) ... [2023-11-06 22:26:33,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:26:34,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:34,080 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:26:34,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:34,107 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:26:34,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34 WrapperNode [2023-11-06 22:26:34,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:34,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:34,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:26:34,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:26:34,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,142 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-11-06 22:26:34,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:34,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:26:34,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:26:34,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:26:34,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:26:34,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:26:34,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:26:34,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:26:34,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (1/1) ... [2023-11-06 22:26:34,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:34,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:34,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:26:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2023-11-06 22:26:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2023-11-06 22:26:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:26:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:26:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:26:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:26:34,303 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:26:34,305 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:26:34,405 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:26:34,411 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:26:34,412 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:26:34,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:34 BoogieIcfgContainer [2023-11-06 22:26:34,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:26:34,416 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:26:34,416 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:26:34,420 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:26:34,421 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:26:34,421 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:26:33" (1/3) ... [2023-11-06 22:26:34,422 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@647ec4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:26:34, skipping insertion in model container [2023-11-06 22:26:34,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:26:34,423 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:34" (2/3) ... [2023-11-06 22:26:34,423 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@647ec4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:26:34, skipping insertion in model container [2023-11-06 22:26:34,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:26:34,424 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:34" (3/3) ... [2023-11-06 22:26:34,425 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci01-2.c [2023-11-06 22:26:34,479 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:26:34,479 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:26:34,479 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:26:34,480 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:26:34,480 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:26:34,480 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:26:34,480 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:26:34,480 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:26:34,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2023-11-06 22:26:34,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:34,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:26:34,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:26:34,509 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-06 22:26:34,510 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:26:34,510 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:26:34,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2023-11-06 22:26:34,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:34,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:26:34,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:26:34,514 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-06 22:26:34,514 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:26:34,521 INFO L748 eck$LassoCheckResult]: Stem: 16#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 7#L29true assume !(main_~x~0#1 < 1); 9#L31true call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 13#$Ultimate##0true [2023-11-06 22:26:34,522 INFO L750 eck$LassoCheckResult]: Loop: 13#$Ultimate##0true ~n := #in~n; 4#L17true assume !(~n < 1); 18#L19true assume !(1 == ~n); 15#L22true call #t~ret4 := fibonacci(~n - 1);< 13#$Ultimate##0true [2023-11-06 22:26:34,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1325878, now seen corresponding path program 1 times [2023-11-06 22:26:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065054147] [2023-11-06 22:26:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:34,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:34,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:34,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash 927648, now seen corresponding path program 1 times [2023-11-06 22:26:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331762977] [2023-11-06 22:26:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:34,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:34,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:34,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash 410501205, now seen corresponding path program 1 times [2023-11-06 22:26:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780395206] [2023-11-06 22:26:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:34,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:34,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:34,834 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:34,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:34,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:34,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:34,835 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:26:34,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:34,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:34,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:34,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration1_Loop [2023-11-06 22:26:34,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:34,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:34,853 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:34,864 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:34,868 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:34,871 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:34,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:34,944 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:34,945 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:26:34,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:34,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:34,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:34,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:34,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:34,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:26:34,987 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:26:34,988 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:26:34,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:34,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:34,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:34,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:26:35,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:35,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:35,031 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:26:35,031 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:26:35,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:35,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:35,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:26:35,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:26:35,077 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:26:35,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:26:35,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:35,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:35,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-06 22:26:35,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,123 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:26:35,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:26:35,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:35,203 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:26:35,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,210 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:35,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:35,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:35,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:35,210 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:26:35,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:35,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:35,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration1_Loop [2023-11-06 22:26:35,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:35,211 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:35,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:35,220 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:35,225 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:35,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:35,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:35,314 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:35,341 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:26:35,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:26:35,374 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 [2023-11-06 22:26:35,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:35,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:35,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:35,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:35,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:35,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:35,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:35,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:35,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:26:35,411 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 [2023-11-06 22:26:35,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:35,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:35,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:35,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:35,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:35,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:35,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:35,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:35,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,443 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:26:35,446 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 [2023-11-06 22:26:35,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:35,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:35,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:35,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:35,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:35,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:35,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:35,469 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:35,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,479 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:26:35,482 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 [2023-11-06 22:26:35,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:35,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:35,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:35,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:35,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:35,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:35,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:35,505 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:26:35,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:26:35,509 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:26:35,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:35,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:35,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:35,556 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:26:35,556 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:26:35,556 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:26:35,557 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2023-11-06 22:26:35,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:26:35,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:35,570 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:26:35,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:35,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:26:35,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:35,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:26:35,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:35,783 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 [2023-11-06 22:26:35,785 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-06 22:26:35,895 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 52 states and 64 transitions. Complement of second has 12 states. [2023-11-06 22:26:35,897 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 [2023-11-06 22:26:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-06 22:26:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-06 22:26:35,905 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-06 22:26:35,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:35,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2023-11-06 22:26:35,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:35,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2023-11-06 22:26:35,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:35,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 64 transitions. [2023-11-06 22:26:35,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:35,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 26 states and 35 transitions. [2023-11-06 22:26:35,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-06 22:26:35,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-06 22:26:35,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 35 transitions. [2023-11-06 22:26:35,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:35,934 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-06 22:26:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 35 transitions. [2023-11-06 22:26:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-11-06 22:26:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2023-11-06 22:26:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-06 22:26:35,969 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-06 22:26:35,969 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-06 22:26:35,969 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:26:35,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2023-11-06 22:26:35,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:35,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:26:35,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:26:35,975 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:35,975 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:35,976 INFO L748 eck$LassoCheckResult]: Stem: 141#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 142#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 143#L29 assume !(main_~x~0#1 < 1); 130#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 146#$Ultimate##0 ~n := #in~n; 137#L17 assume !(~n < 1); 138#L19 assume !(1 == ~n); 131#L22 call #t~ret4 := fibonacci(~n - 1);< 139#$Ultimate##0 ~n := #in~n; 134#L17 assume ~n < 1;#res := 0; 135#fibonacciFINAL assume true; 140#fibonacciEXIT >#36#return; 129#L22-1 [2023-11-06 22:26:35,976 INFO L750 eck$LassoCheckResult]: Loop: 129#L22-1 call #t~ret5 := fibonacci(~n - 2);< 133#$Ultimate##0 ~n := #in~n; 149#L17 assume !(~n < 1); 148#L19 assume !(1 == ~n); 132#L22 call #t~ret4 := fibonacci(~n - 1);< 133#$Ultimate##0 ~n := #in~n; 149#L17 assume ~n < 1;#res := 0; 145#fibonacciFINAL assume true; 147#fibonacciEXIT >#36#return; 129#L22-1 [2023-11-06 22:26:35,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1689937232, now seen corresponding path program 1 times [2023-11-06 22:26:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809654692] [2023-11-06 22:26:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:26:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:26:36,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:36,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809654692] [2023-11-06 22:26:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809654692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:36,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:26:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980806651] [2023-11-06 22:26:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:36,122 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:26:36,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1163555262, now seen corresponding path program 1 times [2023-11-06 22:26:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939083526] [2023-11-06 22:26:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:26:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:26:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:36,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939083526] [2023-11-06 22:26:36,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939083526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:36,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:36,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:26:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943292621] [2023-11-06 22:26:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:36,205 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:26:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:26:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:26:36,209 INFO L87 Difference]: Start difference. First operand 21 states and 27 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) [2023-11-06 22:26:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:36,279 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-11-06 22:26:36,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2023-11-06 22:26:36,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:36,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2023-11-06 22:26:36,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-11-06 22:26:36,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-06 22:26:36,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2023-11-06 22:26:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:36,284 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-06 22:26:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2023-11-06 22:26:36,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-06 22:26:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 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) [2023-11-06 22:26:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-06 22:26:36,288 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-06 22:26:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:26:36,289 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-06 22:26:36,290 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:26:36,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2023-11-06 22:26:36,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:36,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:26:36,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:26:36,292 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:36,293 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-06 22:26:36,293 INFO L748 eck$LassoCheckResult]: Stem: 216#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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(16, 2);call #Ultimate.allocInit(12, 3); 217#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 218#L29 assume !(main_~x~0#1 < 1); 205#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 220#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 212#L19 assume !(1 == ~n); 206#L22 call #t~ret4 := fibonacci(~n - 1);< 213#$Ultimate##0 ~n := #in~n; 209#L17 assume !(~n < 1); 210#L19 assume 1 == ~n;#res := 1; 221#fibonacciFINAL assume true; 225#fibonacciEXIT >#36#return; 204#L22-1 [2023-11-06 22:26:36,293 INFO L750 eck$LassoCheckResult]: Loop: 204#L22-1 call #t~ret5 := fibonacci(~n - 2);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume !(1 == ~n); 207#L22 call #t~ret4 := fibonacci(~n - 1);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume !(1 == ~n); 207#L22 call #t~ret4 := fibonacci(~n - 1);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume 1 == ~n;#res := 1; 222#fibonacciFINAL assume true; 223#fibonacciEXIT >#36#return; 204#L22-1 call #t~ret5 := fibonacci(~n - 2);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume ~n < 1;#res := 0; 228#fibonacciFINAL assume true; 214#fibonacciEXIT >#38#return; 215#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 219#fibonacciFINAL assume true; 224#fibonacciEXIT >#36#return; 204#L22-1 [2023-11-06 22:26:36,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash -848422362, now seen corresponding path program 1 times [2023-11-06 22:26:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329423565] [2023-11-06 22:26:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:36,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:36,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:36,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1698967994, now seen corresponding path program 1 times [2023-11-06 22:26:36,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:36,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559098761] [2023-11-06 22:26:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:36,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:36,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:36,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash 250475039, now seen corresponding path program 1 times [2023-11-06 22:26:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:36,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490724013] [2023-11-06 22:26:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:26:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:26:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:26:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:26:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490724013] [2023-11-06 22:26:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490724013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977043221] [2023-11-06 22:26:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:36,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:36,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:26:36,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-06 22:26:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:36,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:26:36,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:26:36,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:26:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977043221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:36,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:26:36,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-06 22:26:36,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808979562] [2023-11-06 22:26:36,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:37,202 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:37,202 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:37,202 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:37,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:37,203 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:26:37,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:37,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:37,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration3_Loop [2023-11-06 22:26:37,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:37,204 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:37,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,218 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,225 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,227 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:37,297 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:26:37,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,299 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:26:37,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:37,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:37,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,351 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:26:37,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:26:37,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:37,707 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:26:37,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,711 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:37,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:37,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:37,712 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:37,712 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:26:37,712 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,712 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:37,712 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:37,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration3_Loop [2023-11-06 22:26:37,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:37,712 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:37,713 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,725 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:37,800 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:37,800 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:26:37,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:26:37,811 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 [2023-11-06 22:26:37,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:37,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:37,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:37,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:37,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:37,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:37,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:37,841 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:37,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:26:37,855 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 [2023-11-06 22:26:37,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:37,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:37,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:37,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:37,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:37,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:37,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:37,878 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:37,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,884 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,888 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 [2023-11-06 22:26:37,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:37,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:37,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:37,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:37,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:37,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:37,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:37,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:26:37,913 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:37,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,918 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:26:37,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 22:26:37,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:37,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:37,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:37,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:37,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:37,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:37,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:37,954 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:26:37,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:26:37,965 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:26:37,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:37,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:37,972 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:37,979 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:26:37,979 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:26:37,979 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:26:37,980 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2023-11-06 22:26:37,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:26:37,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,988 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:26:38,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:38,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:26:38,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:38,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:38,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-06 22:26:38,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:26:38,346 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-06 22:26:38,346 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:26:38,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 160 states and 216 transitions. Complement of second has 48 states. [2023-11-06 22:26:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-06 22:26:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:26:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 42 transitions. [2023-11-06 22:26:38,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 22 letters. [2023-11-06 22:26:38,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:38,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 35 letters. Loop has 22 letters. [2023-11-06 22:26:38,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:38,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 44 letters. [2023-11-06 22:26:38,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:38,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 216 transitions. [2023-11-06 22:26:38,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-06 22:26:38,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 129 states and 181 transitions. [2023-11-06 22:26:38,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2023-11-06 22:26:38,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2023-11-06 22:26:38,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 181 transitions. [2023-11-06 22:26:38,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:38,677 INFO L218 hiAutomatonCegarLoop]: Abstraction has 129 states and 181 transitions. [2023-11-06 22:26:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 181 transitions. [2023-11-06 22:26:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2023-11-06 22:26:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2023-11-06 22:26:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2023-11-06 22:26:38,696 INFO L240 hiAutomatonCegarLoop]: Abstraction has 107 states and 141 transitions. [2023-11-06 22:26:38,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:38,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:26:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:26:38,698 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:26:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:38,782 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2023-11-06 22:26:38,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 58 transitions. [2023-11-06 22:26:38,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:38,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 54 transitions. [2023-11-06 22:26:38,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-06 22:26:38,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-06 22:26:38,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2023-11-06 22:26:38,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:38,796 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-11-06 22:26:38,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2023-11-06 22:26:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-11-06 22:26:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 22:26:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-11-06 22:26:38,808 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-06 22:26:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:38,812 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-06 22:26:38,812 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:26:38,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2023-11-06 22:26:38,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:26:38,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:26:38,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:26:38,815 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:38,816 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-06 22:26:38,816 INFO L748 eck$LassoCheckResult]: Stem: 989#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 990#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 991#L29 assume !(main_~x~0#1 < 1); 981#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 994#$Ultimate##0 ~n := #in~n; 985#L17 assume !(~n < 1); 986#L19 assume !(1 == ~n); 980#L22 call #t~ret4 := fibonacci(~n - 1);< 982#$Ultimate##0 ~n := #in~n; 999#L17 assume !(~n < 1); 1012#L19 assume !(1 == ~n); 992#L22 call #t~ret4 := fibonacci(~n - 1);< 982#$Ultimate##0 ~n := #in~n; 998#L17 assume !(~n < 1); 995#L19 assume 1 == ~n;#res := 1; 996#fibonacciFINAL assume true; 1010#fibonacciEXIT >#36#return; 1007#L22-1 call #t~ret5 := fibonacci(~n - 2);< 1008#$Ultimate##0 ~n := #in~n; 1011#L17 assume ~n < 1;#res := 0; 1009#fibonacciFINAL assume true; 1006#fibonacciEXIT >#38#return; 1005#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1004#fibonacciFINAL assume true; 1003#fibonacciEXIT >#36#return; 977#L22-1 [2023-11-06 22:26:38,816 INFO L750 eck$LassoCheckResult]: Loop: 977#L22-1 call #t~ret5 := fibonacci(~n - 2);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume !(1 == ~n); 976#L22 call #t~ret4 := fibonacci(~n - 1);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume !(1 == ~n); 976#L22 call #t~ret4 := fibonacci(~n - 1);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume 1 == ~n;#res := 1; 1001#fibonacciFINAL assume true; 1013#fibonacciEXIT >#36#return; 975#L22-1 call #t~ret5 := fibonacci(~n - 2);< 978#$Ultimate##0 ~n := #in~n; 983#L17 assume ~n < 1;#res := 0; 984#fibonacciFINAL assume true; 987#fibonacciEXIT >#38#return; 988#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 993#fibonacciFINAL assume true; 997#fibonacciEXIT >#36#return; 977#L22-1 [2023-11-06 22:26:38,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1885512200, now seen corresponding path program 2 times [2023-11-06 22:26:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455473878] [2023-11-06 22:26:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:38,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:38,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:38,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:38,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1698967994, now seen corresponding path program 2 times [2023-11-06 22:26:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:38,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907678247] [2023-11-06 22:26:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:38,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:38,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:38,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:38,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -360938367, now seen corresponding path program 3 times [2023-11-06 22:26:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025670947] [2023-11-06 22:26:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:26:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:26:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 22:26:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:26:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-06 22:26:39,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:39,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025670947] [2023-11-06 22:26:39,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025670947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:39,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242332449] [2023-11-06 22:26:39,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:39,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:39,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:39,134 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:39,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:26:39,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-06 22:26:39,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:39,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:26:39,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-06 22:26:39,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:26:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242332449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:39,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:26:39,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 21 [2023-11-06 22:26:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452647887] [2023-11-06 22:26:39,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:40,055 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:40,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:40,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:40,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:40,056 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:26:40,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:40,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:40,056 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:40,056 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration4_Loop [2023-11-06 22:26:40,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:40,056 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:40,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,073 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,076 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:40,144 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:26:40,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:40,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:40,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:40,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:40,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 22:26:40,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:40,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:40,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:40,195 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:40,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:26:40,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:40,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 22:26:40,531 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:26:40,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:40,535 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:40,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:40,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:40,535 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:40,535 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:26:40,535 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:40,535 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:40,535 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:40,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration4_Loop [2023-11-06 22:26:40,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:40,536 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:40,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,552 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:40,624 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:40,624 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:26:40,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:40,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:40,626 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:40,634 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 [2023-11-06 22:26:40,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:40,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:40,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:40,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:40,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:40,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:40,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:40,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 22:26:40,652 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:26:40,655 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:26:40,655 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:26:40,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:40,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:40,657 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:40,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 22:26:40,659 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:26:40,659 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:26:40,660 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:26:40,660 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2023-11-06 22:26:40,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:40,663 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:26:40,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:40,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:26:40,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:40,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:40,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:40,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:26:41,129 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-06 22:26:41,129 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:26:41,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2023-11-06 22:26:41,234 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 [2023-11-06 22:26:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:26:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-06 22:26:41,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-06 22:26:41,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:41,238 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:26:41,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:41,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:26:41,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:41,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:41,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:26:41,633 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-06 22:26:41,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:26:41,741 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2023-11-06 22:26:41,741 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 [2023-11-06 22:26:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:26:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-06 22:26:41,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-06 22:26:41,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:41,744 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:26:41,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:41,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:26:41,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:42,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:42,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:26:42,170 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 7 loop predicates [2023-11-06 22:26:42,171 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:26:42,472 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 345 states and 444 transitions. Complement of second has 125 states. [2023-11-06 22:26:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-06 22:26:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:26:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2023-11-06 22:26:42,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-06 22:26:42,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:42,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 47 letters. Loop has 22 letters. [2023-11-06 22:26:42,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:42,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 44 letters. [2023-11-06 22:26:42,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:42,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 444 transitions. [2023-11-06 22:26:42,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-06 22:26:42,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 220 states and 297 transitions. [2023-11-06 22:26:42,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2023-11-06 22:26:42,521 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2023-11-06 22:26:42,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 297 transitions. [2023-11-06 22:26:42,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:42,522 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 297 transitions. [2023-11-06 22:26:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 297 transitions. [2023-11-06 22:26:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2023-11-06 22:26:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 112 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2023-11-06 22:26:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2023-11-06 22:26:42,544 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 223 transitions. [2023-11-06 22:26:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:26:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:26:42,546 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 21 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 13 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-06 22:26:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:42,830 INFO L93 Difference]: Finished difference Result 349 states and 503 transitions. [2023-11-06 22:26:42,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349 states and 503 transitions. [2023-11-06 22:26:42,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-06 22:26:42,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349 states to 339 states and 490 transitions. [2023-11-06 22:26:42,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2023-11-06 22:26:42,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2023-11-06 22:26:42,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 339 states and 490 transitions. [2023-11-06 22:26:42,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:42,846 INFO L218 hiAutomatonCegarLoop]: Abstraction has 339 states and 490 transitions. [2023-11-06 22:26:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states and 490 transitions. [2023-11-06 22:26:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 274. [2023-11-06 22:26:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 171 states have (on average 1.128654970760234) internal successors, (193), 174 states have internal predecessors, (193), 60 states have call successors, (72), 36 states have call predecessors, (72), 43 states have return successors, (136), 63 states have call predecessors, (136), 58 states have call successors, (136) [2023-11-06 22:26:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 401 transitions. [2023-11-06 22:26:42,871 INFO L240 hiAutomatonCegarLoop]: Abstraction has 274 states and 401 transitions. [2023-11-06 22:26:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:26:42,873 INFO L428 stractBuchiCegarLoop]: Abstraction has 274 states and 401 transitions. [2023-11-06 22:26:42,873 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:26:42,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 274 states and 401 transitions. [2023-11-06 22:26:42,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-06 22:26:42,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:26:42,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:26:42,878 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 7, 7, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2023-11-06 22:26:42,878 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:26:42,879 INFO L748 eck$LassoCheckResult]: Stem: 2992#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;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(16, 2);call #Ultimate.allocInit(12, 3); 2993#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2994#L29 assume !(main_~x~0#1 < 1); 2995#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 2999#$Ultimate##0 ~n := #in~n; 3035#L17 assume !(~n < 1); 3033#L19 assume !(1 == ~n); 3025#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3036#L17 assume !(~n < 1); 3135#L19 assume 1 == ~n;#res := 1; 3134#fibonacciFINAL assume true; 3131#fibonacciEXIT >#36#return; 3126#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3128#$Ultimate##0 ~n := #in~n; 3132#L17 assume ~n < 1;#res := 0; 3129#fibonacciFINAL assume true; 3125#fibonacciEXIT >#38#return; 3123#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3122#fibonacciFINAL assume true; 3121#fibonacciEXIT >#36#return; 3065#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3067#$Ultimate##0 ~n := #in~n; 3118#L17 assume !(~n < 1); 3114#L19 assume 1 == ~n;#res := 1; 3013#fibonacciFINAL assume true; 3064#fibonacciEXIT >#38#return; 3060#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3052#fibonacciFINAL assume true; 3041#fibonacciEXIT >#36#return; 3040#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3043#$Ultimate##0 ~n := #in~n; 3119#L17 assume !(~n < 1); 3115#L19 assume !(1 == ~n); 3116#L22 call #t~ret4 := fibonacci(~n - 1);< 3236#$Ultimate##0 ~n := #in~n; 3170#L17 assume !(~n < 1); 3171#L19 assume 1 == ~n;#res := 1; 3237#fibonacciFINAL assume true; 3234#fibonacciEXIT >#36#return; 3056#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3059#$Ultimate##0 ~n := #in~n; 3124#L17 assume ~n < 1;#res := 0; 3069#fibonacciFINAL assume true; 3055#fibonacciEXIT >#38#return; 3058#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3051#fibonacciFINAL assume true; 3039#fibonacciEXIT >#38#return; 3027#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3030#fibonacciFINAL assume true; 3024#fibonacciEXIT >#36#return; 3012#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3020#$Ultimate##0 ~n := #in~n; 3016#L17 assume !(~n < 1); 3010#L19 assume !(1 == ~n); 3015#L22 call #t~ret4 := fibonacci(~n - 1);< 3235#$Ultimate##0 ~n := #in~n; 3211#L17 assume !(~n < 1); 3212#L19 assume !(1 == ~n); 3194#L22 call #t~ret4 := fibonacci(~n - 1);< 3197#$Ultimate##0 [2023-11-06 22:26:42,879 INFO L750 eck$LassoCheckResult]: Loop: 3197#$Ultimate##0 ~n := #in~n; 3209#L17 assume !(~n < 1); 3207#L19 assume !(1 == ~n); 3192#L22 call #t~ret4 := fibonacci(~n - 1);< 3197#$Ultimate##0 [2023-11-06 22:26:42,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1406603621, now seen corresponding path program 4 times [2023-11-06 22:26:42,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:42,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59078334] [2023-11-06 22:26:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:42,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:42,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:42,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:42,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 927648, now seen corresponding path program 2 times [2023-11-06 22:26:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003623008] [2023-11-06 22:26:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:42,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:42,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:42,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2055878970, now seen corresponding path program 5 times [2023-11-06 22:26:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:42,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335349640] [2023-11-06 22:26:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:26:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:26:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:26:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:26:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:26:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:26:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 110 proven. 115 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-06 22:26:43,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:43,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335349640] [2023-11-06 22:26:43,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335349640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:43,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490553965] [2023-11-06 22:26:43,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:26:43,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:43,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:43,404 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:43,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:26:43,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-06 22:26:43,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:43,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:43,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 109 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-06 22:26:43,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 121 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-06 22:26:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490553965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:44,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:26:44,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 16] total 21 [2023-11-06 22:26:44,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986956817] [2023-11-06 22:26:44,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:44,220 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:44,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:44,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:44,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:44,220 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:26:44,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:44,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:44,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration5_Loop [2023-11-06 22:26:44,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:44,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:44,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,285 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:44,285 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:26:44,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,287 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:44,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:44,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-06 22:26:44,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:26:44,325 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:26:44,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,335 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:44,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:44,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-06 22:26:44,363 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:26:44,364 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:26:44,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,369 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:26:44,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:44,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 22:26:44,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,404 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:26:44,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:26:44,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 22:26:44,442 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:26:44,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,446 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:26:44,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:26:44,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:26:44,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:26:44,446 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:26:44,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:26:44,447 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:26:44,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci01-2.c_Iteration5_Loop [2023-11-06 22:26:44,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:26:44,447 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:26:44,447 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,450 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:26:44,501 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:26:44,501 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:26:44,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,503 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,510 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 [2023-11-06 22:26:44,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:44,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:44,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:44,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:44,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:44,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:44,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:44,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 22:26:44,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:44,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,550 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,557 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 [2023-11-06 22:26:44,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:44,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:44,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:44,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:44,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:44,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:44,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:44,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 22:26:44,585 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:26:44,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,595 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,601 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:26:44,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:26:44,614 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:26:44,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:26:44,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:26:44,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:26:44,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:26:44,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:26:44,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-06 22:26:44,629 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:26:44,631 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:26:44,631 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:26:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:26:44,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:44,635 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:44,642 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:26:44,642 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:26:44,642 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:26:44,642 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2023-11-06 22:26:44,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 22:26:44,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:44,652 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:26:44,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:44,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:26:44,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:45,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:26:45,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:45,340 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 [2023-11-06 22:26:45,340 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:45,416 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 296 states and 427 transitions. Complement of second has 13 states. [2023-11-06 22:26:45,416 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 [2023-11-06 22:26:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-06 22:26:45,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-06 22:26:45,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:45,419 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:26:45,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:45,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:45,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:26:45,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:46,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:26:46,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:46,113 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 [2023-11-06 22:26:46,113 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:46,178 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 296 states and 427 transitions. Complement of second has 13 states. [2023-11-06 22:26:46,179 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 [2023-11-06 22:26:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-06 22:26:46,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-06 22:26:46,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:46,180 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:26:46,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:46,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-06 22:26:46,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:46,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:26:46,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:46,847 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 [2023-11-06 22:26:46,848 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:46,935 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 349 states and 484 transitions. Complement of second has 14 states. [2023-11-06 22:26:46,936 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 [2023-11-06 22:26:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-11-06 22:26:46,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-06 22:26:46,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:46,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 76 letters. Loop has 4 letters. [2023-11-06 22:26:46,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:46,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 72 letters. Loop has 8 letters. [2023-11-06 22:26:46,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:26:46,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349 states and 484 transitions. [2023-11-06 22:26:46,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-06 22:26:46,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349 states to 288 states and 417 transitions. [2023-11-06 22:26:46,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 138 [2023-11-06 22:26:46,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2023-11-06 22:26:46,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 288 states and 417 transitions. [2023-11-06 22:26:46,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:26:46,951 INFO L218 hiAutomatonCegarLoop]: Abstraction has 288 states and 417 transitions. [2023-11-06 22:26:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states and 417 transitions. [2023-11-06 22:26:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 280. [2023-11-06 22:26:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 176 states have (on average 1.125) internal successors, (198), 179 states have internal predecessors, (198), 61 states have call successors, (73), 37 states have call predecessors, (73), 43 states have return successors, (138), 63 states have call predecessors, (138), 59 states have call successors, (138) [2023-11-06 22:26:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 409 transitions. [2023-11-06 22:26:46,969 INFO L240 hiAutomatonCegarLoop]: Abstraction has 280 states and 409 transitions. [2023-11-06 22:26:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:46,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:26:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:26:46,970 INFO L87 Difference]: Start difference. First operand 280 states and 409 transitions. Second operand has 21 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 15 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-06 22:26:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:47,178 INFO L93 Difference]: Finished difference Result 408 states and 601 transitions. [2023-11-06 22:26:47,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 601 transitions. [2023-11-06 22:26:47,185 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:26:47,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 0 states and 0 transitions. [2023-11-06 22:26:47,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:26:47,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:26:47,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:26:47,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:47,186 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:26:47,187 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:26:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:26:47,188 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:26:47,188 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:26:47,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:26:47,188 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:26:47,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 22:26:47,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:26:47 BoogieIcfgContainer [2023-11-06 22:26:47,196 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:26:47,197 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:26:47,197 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:26:47,198 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:26:47,198 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:34" (3/4) ... [2023-11-06 22:26:47,200 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:26:47,201 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:26:47,202 INFO L158 Benchmark]: Toolchain (without parser) took 13328.76ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 108.9MB in the beginning and 85.1MB in the end (delta: 23.8MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. [2023-11-06 22:26:47,202 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory was 64.7MB in the beginning and 64.7MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:47,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.00ms. Allocated memory is still 138.4MB. Free memory was 108.9MB in the beginning and 98.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:26:47,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.36ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 97.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:47,208 INFO L158 Benchmark]: Boogie Preprocessor took 18.27ms. Allocated memory is still 138.4MB. Free memory was 97.4MB in the beginning and 96.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:47,209 INFO L158 Benchmark]: RCFGBuilder took 252.24ms. Allocated memory is still 138.4MB. Free memory was 96.3MB in the beginning and 87.5MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:26:47,209 INFO L158 Benchmark]: BuchiAutomizer took 12780.28ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 87.0MB in the beginning and 86.1MB in the end (delta: 831.6kB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2023-11-06 22:26:47,209 INFO L158 Benchmark]: Witness Printer took 4.01ms. Allocated memory is still 201.3MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:47,212 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory was 64.7MB in the beginning and 64.7MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.00ms. Allocated memory is still 138.4MB. Free memory was 108.9MB in the beginning and 98.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.36ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 97.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.27ms. Allocated memory is still 138.4MB. Free memory was 97.4MB in the beginning and 96.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.24ms. Allocated memory is still 138.4MB. Free memory was 96.3MB in the beginning and 87.5MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 12780.28ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 87.0MB in the beginning and 86.1MB in the end (delta: 831.6kB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 4.01ms. Allocated memory is still 201.3MB. Free memory is still 85.1MB. 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 8 terminating modules (4 trivial, 2 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 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.7s and 6 iterations. TraceHistogramMax:12. Analysis of lassos took 6.6s. Construction of modules took 0.6s. Büchi inclusion checks took 5.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 151 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 423 mSDsluCounter, 403 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 653 IncrementalHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 311 mSolverCounterUnsat, 161 mSDtfsCounter, 653 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp94 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq173 hnf95 smp62 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-06 22:26:47,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-06 22:26:47,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:47,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:26:47,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3f7a3d6-6dac-4bfd-ae7e-f792b9f7e40c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE