./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/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_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/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 32bit --witnessprinter.graph.data.programhash 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:34:39,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:34:39,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:34:39,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:34:39,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:34:39,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:34:39,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:34:39,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:34:39,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:34:39,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:34:39,212 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:34:39,212 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:34:39,212 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:34:39,213 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:34:39,213 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:34:39,214 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:34:39,214 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:34:39,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:34:39,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:34:39,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:34:39,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:34:39,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:34:39,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:34:39,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:34:39,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:34:39,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:34:39,223 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:34:39,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:34:39,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:34:39,224 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:34:39,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:34:39,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:34:39,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:34:39,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:34:39,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:34:39,228 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:34:39,229 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_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2023-11-06 22:34:39,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:34:39,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:34:39,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:34:39,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:34:39,517 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:34:39,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2023-11-06 22:34:42,615 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:34:42,832 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:34:42,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2023-11-06 22:34:42,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/data/488d1fa63/14b56e8bb8df49488fdea5a0fb413084/FLAG452356ede [2023-11-06 22:34:42,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/data/488d1fa63/14b56e8bb8df49488fdea5a0fb413084 [2023-11-06 22:34:42,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:34:42,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:34:42,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:42,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:34:42,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:34:42,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:42" (1/1) ... [2023-11-06 22:34:42,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd4869c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:42, skipping insertion in model container [2023-11-06 22:34:42,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:42" (1/1) ... [2023-11-06 22:34:42,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:34:43,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:43,159 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:34:43,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:43,190 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:34:43,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43 WrapperNode [2023-11-06 22:34:43,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:43,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:43,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:34:43,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:34:43,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,223 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-06 22:34:43,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:43,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:34:43,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:34:43,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:34:43,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:34:43,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:34:43,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:34:43,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:34:43,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (1/1) ... [2023-11-06 22:34:43,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:43,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:43,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:43,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:34:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:34:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:34:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-06 22:34:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-06 22:34:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-06 22:34:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-06 22:34:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:34:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:34:43,398 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:34:43,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:34:43,562 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:34:43,568 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:34:43,569 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:34:43,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:43 BoogieIcfgContainer [2023-11-06 22:34:43,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:34:43,584 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:34:43,584 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:34:43,588 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:34:43,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:34:43,589 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:34:42" (1/3) ... [2023-11-06 22:34:43,590 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49a3a7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:34:43, skipping insertion in model container [2023-11-06 22:34:43,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:34:43,590 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:43" (2/3) ... [2023-11-06 22:34:43,591 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49a3a7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:34:43, skipping insertion in model container [2023-11-06 22:34:43,591 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:34:43,591 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:43" (3/3) ... [2023-11-06 22:34:43,592 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-2.c [2023-11-06 22:34:43,655 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:34:43,656 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:34:43,656 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:34:43,657 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:34:43,657 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:34:43,657 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:34:43,657 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:34:43,657 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:34:43,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:34:43,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:34:43,685 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:43,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:43,695 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:34:43,695 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:43,695 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:34:43,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:34:43,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:34:43,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:43,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:43,704 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:34:43,704 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:43,712 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-06 22:34:43,712 INFO L750 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2023-11-06 22:34:43,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-06 22:34:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:43,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941848602] [2023-11-06 22:34:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:43,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:43,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:43,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-06 22:34:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793810608] [2023-11-06 22:34:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:43,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:43,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:43,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:43,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-06 22:34:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:43,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763337432] [2023-11-06 22:34:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:43,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:43,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:43,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:44,181 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:44,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:44,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:44,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:44,183 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:34:44,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:44,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:44,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2023-11-06 22:34:44,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:44,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:44,204 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 22:34:44,216 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 22:34:44,222 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 22:34:44,226 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 22:34:44,230 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 22:34:44,233 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 22:34:44,236 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 22:34:44,239 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 22:34:44,322 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:44,322 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:34:44,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:34:44,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:34:44,429 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,430 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:34:44,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,468 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,469 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:34:44,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,521 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:34:44,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:34:44,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,613 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:34:44,652 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:44,652 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:44,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:44,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:34:44,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:34:44,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:34:44,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:44,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:34:44,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,823 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:44,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:44,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:44,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:44,824 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:34:44,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:44,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:44,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2023-11-06 22:34:44,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:44,824 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:44,826 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 22:34:44,831 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 22:34:44,836 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 22:34:44,839 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 22:34:44,842 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 22:34:44,845 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 22:34:44,858 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 22:34:44,861 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 22:34:44,933 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:44,938 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:34:44,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:44,955 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 22:34:44,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:34:44,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:44,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:44,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:44,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:44,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:44,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:44,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:44,981 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:44,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:44,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:44,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:44,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:45,003 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 22:34:45,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 22:34:45,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:45,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:45,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:45,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:45,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:45,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:45,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:45,026 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:45,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:45,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:45,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:45,036 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 22:34:45,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:45,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:45,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:45,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:45,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:45,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:34:45,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:45,055 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:45,063 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:45,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:45,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:45,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:45,070 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:45,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:34:45,075 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 22:34:45,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:45,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:45,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:45,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:45,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:45,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:45,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:45,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:45,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:45,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:45,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:45,110 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:45,122 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 22:34:45,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:34:45,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:45,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:45,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:45,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:45,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:45,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:45,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:45,143 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:45,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-06 22:34:45,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:45,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:45,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:45,166 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 22:34:45,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:45,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:45,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:45,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:45,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:45,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:45,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:45,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:34:45,193 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:34:45,207 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:34:45,207 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:34:45,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:45,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:45,245 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:45,254 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:34:45,255 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:34:45,255 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:34:45,255 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-06 22:34:45,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:34:45,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:45,297 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:34:45,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:45,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-06 22:34:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:45,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:34:45,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:45,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:34:45,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:45,585 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 22:34:45,619 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-06 22:34:45,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,807 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 85 states and 117 transitions. Complement of second has 24 states. [2023-11-06 22:34:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-06 22:34:45,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-06 22:34:45,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:45,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-06 22:34:45,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:45,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-06 22:34:45,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:45,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-06 22:34:45,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:34:45,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-06 22:34:45,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-06 22:34:45,838 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-06 22:34:45,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-06 22:34:45,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:45,840 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-06 22:34:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-06 22:34:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-06 22:34:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-06 22:34:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-06 22:34:45,876 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-06 22:34:45,876 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-06 22:34:45,877 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:34:45,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-06 22:34:45,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:34:45,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:45,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:45,880 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:45,880 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:45,881 INFO L748 eck$LassoCheckResult]: Stem: 236#$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(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-06 22:34:45,881 INFO L750 eck$LassoCheckResult]: Loop: 211#L25-1 call #t~ret7 := fibo1(~n - 2);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume !(~n < 1); 243#L12 assume !(1 == ~n); 212#L15 call #t~ret4 := fibo2(~n - 1);< 225#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 224#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#48#return; 211#L25-1 [2023-11-06 22:34:45,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-06 22:34:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271999683] [2023-11-06 22:34:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:34:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,079 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 22:34:46,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271999683] [2023-11-06 22:34:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271999683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:46,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:46,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:34:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186015297] [2023-11-06 22:34:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:46,085 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:34:46,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-06 22:34:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:46,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955232949] [2023-11-06 22:34:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:34:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,224 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 22:34:46,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:46,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955232949] [2023-11-06 22:34:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955232949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:46,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:46,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:34:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998423145] [2023-11-06 22:34:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:46,225 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:34:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:34:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:34:46,229 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:34:46,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:46,302 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-06 22:34:46,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-06 22:34:46,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:34:46,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-06 22:34:46,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-06 22:34:46,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-06 22:34:46,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-06 22:34:46,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:46,309 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-06 22:34:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-06 22:34:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-06 22:34:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-06 22:34:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-06 22:34:46,318 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-06 22:34:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:34:46,319 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-06 22:34:46,319 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:34:46,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-06 22:34:46,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-06 22:34:46,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:46,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:46,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:46,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:46,325 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-06 22:34:46,326 INFO L750 eck$LassoCheckResult]: Loop: 355#L25-1 call #t~ret7 := fibo1(~n - 2);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume !(1 == ~n); 361#L15 call #t~ret4 := fibo2(~n - 1);< 392#$Ultimate##0 ~n := #in~n; 391#L20 assume !(~n < 1); 389#L22 assume !(1 == ~n); 356#L25 call #t~ret6 := fibo1(~n - 1);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 384#fibo1FINAL assume true; 385#fibo1EXIT >#48#return; 355#L25-1 [2023-11-06 22:34:46,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-06 22:34:46,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:46,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619257544] [2023-11-06 22:34:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:34:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:46,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619257544] [2023-11-06 22:34:46,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619257544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156833083] [2023-11-06 22:34:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:46,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:46,503 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:46,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:34:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:46,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:46,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156833083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:46,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-11-06 22:34:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282760861] [2023-11-06 22:34:46,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:46,752 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:34:46,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-06 22:34:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409706343] [2023-11-06 22:34:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:46,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:46,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:47,021 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:47,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:47,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:47,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:47,021 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:34:47,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:47,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:47,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2023-11-06 22:34:47,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:47,022 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:47,023 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 22:34:47,029 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 22:34:47,032 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 22:34:47,034 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 22:34:47,037 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 22:34:47,041 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 22:34:47,047 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 22:34:47,050 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 22:34:47,052 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 22:34:47,135 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:47,135 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:34:47,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:34:47,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:47,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:47,158 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:47,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-06 22:34:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,171 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 22:34:47,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:47,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,185 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:47,185 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:47,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,190 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 22:34:47,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:47,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,204 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:47,205 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:47,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,213 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:47,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 22:34:47,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:47,229 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:47,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,234 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 22:34:47,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:47,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,250 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:47,250 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:47,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-06 22:34:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,255 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 22:34:47,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:47,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-06 22:34:47,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-06 22:34:47,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:34:47,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:47,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:34:47,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-06 22:34:47,295 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:47,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:47,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:47,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:47,296 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:34:47,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:47,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:47,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2023-11-06 22:34:47,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:47,296 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:47,297 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 22:34:47,301 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 22:34:47,303 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 22:34:47,305 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 22:34:47,307 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 22:34:47,320 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 22:34:47,324 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 22:34:47,327 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 22:34:47,330 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 22:34:47,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:47,389 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:34:47,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,393 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-06 22:34:47,400 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 22:34:47,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:47,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:47,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:47,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:47,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:47,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:47,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:47,428 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:47,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,433 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,437 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 22:34:47,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:47,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:47,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:47,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:47,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:47,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:47,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:47,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-06 22:34:47,465 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:47,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,469 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,473 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 22:34:47,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 22:34:47,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:47,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:47,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:47,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:47,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:47,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:47,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:47,496 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:47,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,501 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,505 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 22:34:47,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:47,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:47,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:47,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:47,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:47,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:47,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:47,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 22:34:47,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:47,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,538 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,545 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 22:34:47,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:47,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:47,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:47,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:47,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:47,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:47,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:47,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 22:34:47,573 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:34:47,576 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:34:47,577 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:34:47,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:47,580 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:47,582 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:34:47,582 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:34:47,582 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:34:47,582 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-06 22:34:47,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 22:34:47,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:47,588 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:34:47,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:47,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:47,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:47,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:34:47,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:47,946 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-06 22:34:47,947 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:34:48,467 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2023-11-06 22:34:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:34:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-06 22:34:48,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-06 22:34:48,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:48,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-06 22:34:48,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:48,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-06 22:34:48,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:48,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-06 22:34:48,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:34:48,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-06 22:34:48,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-06 22:34:48,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-06 22:34:48,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-06 22:34:48,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:48,515 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-06 22:34:48,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-06 22:34:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-06 22:34:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-06 22:34:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-06 22:34:48,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-06 22:34:48,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:34:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:34:48,536 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:34:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:48,692 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2023-11-06 22:34:48,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 247 transitions. [2023-11-06 22:34:48,705 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:34:48,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 243 transitions. [2023-11-06 22:34:48,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2023-11-06 22:34:48,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2023-11-06 22:34:48,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 243 transitions. [2023-11-06 22:34:48,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:48,722 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 243 transitions. [2023-11-06 22:34:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 243 transitions. [2023-11-06 22:34:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2023-11-06 22:34:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (56), 33 states have call predecessors, (56), 36 states have call successors, (56) [2023-11-06 22:34:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2023-11-06 22:34:48,757 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 225 transitions. [2023-11-06 22:34:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:34:48,758 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 225 transitions. [2023-11-06 22:34:48,760 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:34:48,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 225 transitions. [2023-11-06 22:34:48,762 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-06 22:34:48,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:48,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:48,766 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:48,767 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:48,767 INFO L748 eck$LassoCheckResult]: Stem: 1269#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1239#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1240#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1273#$Ultimate##0 ~n := #in~n; 1264#L10 assume !(~n < 1); 1257#L12 assume !(1 == ~n); 1226#L15 call #t~ret4 := fibo2(~n - 1);< 1265#$Ultimate##0 ~n := #in~n; 1267#L20 assume !(~n < 1); 1268#L22 assume !(1 == ~n); 1241#L25 call #t~ret6 := fibo1(~n - 1);< 1242#$Ultimate##0 ~n := #in~n; 1303#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1310#L15 call #t~ret4 := fibo2(~n - 1);< 1316#$Ultimate##0 ~n := #in~n; 1319#L20 assume ~n < 1;#res := 0; 1317#fibo2FINAL assume true; 1315#fibo2EXIT >#52#return; 1313#L15-1 call #t~ret5 := fibo2(~n - 2);< 1314#$Ultimate##0 ~n := #in~n; 1321#L20 assume ~n < 1;#res := 0; 1318#fibo2FINAL assume true; 1312#fibo2EXIT >#54#return; 1311#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1306#fibo1FINAL assume true; 1307#fibo1EXIT >#48#return; 1244#L25-1 call #t~ret7 := fibo1(~n - 2);< 1300#$Ultimate##0 ~n := #in~n; 1331#L10 assume ~n < 1;#res := 0; 1271#fibo1FINAL assume true; 1365#fibo1EXIT >#50#return; 1234#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1245#fibo2FINAL assume true; 1258#fibo2EXIT >#52#return; 1203#L15-1 call #t~ret5 := fibo2(~n - 2);< 1329#$Ultimate##0 [2023-11-06 22:34:48,768 INFO L750 eck$LassoCheckResult]: Loop: 1329#$Ultimate##0 ~n := #in~n; 1323#L20 assume !(~n < 1); 1202#L22 assume !(1 == ~n); 1207#L25 call #t~ret6 := fibo1(~n - 1);< 1227#$Ultimate##0 ~n := #in~n; 1236#L10 assume !(~n < 1); 1263#L12 assume !(1 == ~n); 1204#L15 call #t~ret4 := fibo2(~n - 1);< 1329#$Ultimate##0 [2023-11-06 22:34:48,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1873386980, now seen corresponding path program 1 times [2023-11-06 22:34:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:48,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643709625] [2023-11-06 22:34:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:34:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:34:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:34:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:34:48,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:48,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643709625] [2023-11-06 22:34:48,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643709625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894002373] [2023-11-06 22:34:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:48,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:48,975 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:34:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:49,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:49,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:34:49,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:34:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894002373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:49,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2023-11-06 22:34:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501741222] [2023-11-06 22:34:49,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:49,542 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:34:49,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-06 22:34:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888129372] [2023-11-06 22:34:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:49,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:49,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:49,661 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:49,661 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:49,661 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:49,661 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:49,661 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:34:49,661 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,662 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:49,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:49,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2023-11-06 22:34:49,662 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:49,662 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:49,663 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 22:34:49,666 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 22:34:49,668 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 22:34:49,674 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 22:34:49,677 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 22:34:49,679 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 22:34:49,681 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 22:34:49,691 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 22:34:49,751 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:49,752 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:34:49,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,753 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 22:34:49,785 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:49,785 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:49,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:49,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,795 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-06 22:34:49,814 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:49,814 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:49,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:49,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,818 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-06 22:34:49,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:49,833 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:49,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:49,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,838 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-06 22:34:49,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:49,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:49,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-06 22:34:49,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,859 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-06 22:34:49,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:49,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:49,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-06 22:34:49,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,878 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-06 22:34:49,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,891 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:49,892 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:49,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:49,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,895 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-06 22:34:49,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:49,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-06 22:34:49,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,914 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-06 22:34:49,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:34:49,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:49,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:34:49,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-06 22:34:49,985 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:49,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:49,986 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:49,986 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:49,986 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:34:49,986 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:49,986 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:49,986 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:49,986 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2023-11-06 22:34:49,986 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:49,986 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:49,987 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 22:34:49,995 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 22:34:49,997 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 22:34:50,000 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 22:34:50,002 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 22:34:50,004 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 22:34:50,006 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 22:34:50,009 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 22:34:50,061 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:50,062 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:34:50,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,063 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-06 22:34:50,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:34:50,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,078 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-06 22:34:50,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,082 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,093 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 22:34:50,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-06 22:34:50,124 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,134 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-06 22:34:50,137 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 22:34:50,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,169 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,172 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:34:50,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-06 22:34:50,204 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,212 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,216 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 22:34:50,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-06 22:34:50,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,232 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-06 22:34:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,236 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-06 22:34:50,239 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:34:50,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,255 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,259 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-06 22:34:50,261 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 22:34:50,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,272 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,273 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:50,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-06 22:34:50,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,277 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,279 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 22:34:50,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-06 22:34:50,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:50,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:50,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:50,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:50,289 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:50,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:50,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:50,323 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:34:50,326 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:34:50,326 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:34:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,329 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-06 22:34:50,330 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:34:50,330 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:34:50,330 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:34:50,330 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-06 22:34:50,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-06 22:34:50,333 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:34:50,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:50,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:50,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:34:50,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:50,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:34:50,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:50,834 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 22:34:50,835 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-06 22:34:50,835 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:34:51,027 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2023-11-06 22:34:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:34:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-06 22:34:51,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2023-11-06 22:34:51,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:51,029 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:34:51,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:51,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:34:51,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:51,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:34:51,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:51,507 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 22:34:51,507 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-06 22:34:51,508 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:34:51,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2023-11-06 22:34:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:34:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-06 22:34:51,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2023-11-06 22:34:51,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:51,697 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:34:51,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:51,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:34:51,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:34:52,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:52,142 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 22:34:52,143 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-06 22:34:52,143 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:34:52,336 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 553 states and 762 transitions. Complement of second has 25 states. [2023-11-06 22:34:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:34:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-06 22:34:52,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 8 letters. [2023-11-06 22:34:52,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:52,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-06 22:34:52,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:52,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 16 letters. [2023-11-06 22:34:52,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:52,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 553 states and 762 transitions. [2023-11-06 22:34:52,350 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-06 22:34:52,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 553 states to 445 states and 639 transitions. [2023-11-06 22:34:52,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2023-11-06 22:34:52,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2023-11-06 22:34:52,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 639 transitions. [2023-11-06 22:34:52,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:52,362 INFO L218 hiAutomatonCegarLoop]: Abstraction has 445 states and 639 transitions. [2023-11-06 22:34:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 639 transitions. [2023-11-06 22:34:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2023-11-06 22:34:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 269 states have internal predecessors, (316), 71 states have call successors, (74), 55 states have call predecessors, (74), 53 states have return successors, (117), 45 states have call predecessors, (117), 69 states have call successors, (117) [2023-11-06 22:34:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2023-11-06 22:34:52,394 INFO L240 hiAutomatonCegarLoop]: Abstraction has 370 states and 507 transitions. [2023-11-06 22:34:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:34:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:34:52,395 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-06 22:34:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:52,713 INFO L93 Difference]: Finished difference Result 449 states and 635 transitions. [2023-11-06 22:34:52,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 635 transitions. [2023-11-06 22:34:52,735 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:34:52,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 410 states and 591 transitions. [2023-11-06 22:34:52,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2023-11-06 22:34:52,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2023-11-06 22:34:52,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 591 transitions. [2023-11-06 22:34:52,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:52,745 INFO L218 hiAutomatonCegarLoop]: Abstraction has 410 states and 591 transitions. [2023-11-06 22:34:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 591 transitions. [2023-11-06 22:34:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 359. [2023-11-06 22:34:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 233 states have (on average 1.240343347639485) internal successors, (289), 261 states have internal predecessors, (289), 74 states have call successors, (77), 50 states have call predecessors, (77), 52 states have return successors, (130), 47 states have call predecessors, (130), 72 states have call successors, (130) [2023-11-06 22:34:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2023-11-06 22:34:52,774 INFO L240 hiAutomatonCegarLoop]: Abstraction has 359 states and 496 transitions. [2023-11-06 22:34:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:34:52,775 INFO L428 stractBuchiCegarLoop]: Abstraction has 359 states and 496 transitions. [2023-11-06 22:34:52,775 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:34:52,775 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 496 transitions. [2023-11-06 22:34:52,779 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:34:52,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:52,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:52,782 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:52,783 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-06 22:34:52,783 INFO L748 eck$LassoCheckResult]: Stem: 4978#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4943#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4944#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4981#$Ultimate##0 ~n := #in~n; 5106#L10 assume !(~n < 1); 5105#L12 assume !(1 == ~n); 5096#L15 call #t~ret4 := fibo2(~n - 1);< 5104#$Ultimate##0 ~n := #in~n; 5103#L20 assume !(~n < 1); 5102#L22 assume !(1 == ~n); 4954#L25 call #t~ret6 := fibo1(~n - 1);< 5094#$Ultimate##0 ~n := #in~n; 5095#L10 assume !(~n < 1); 5131#L12 assume !(1 == ~n); 5088#L15 call #t~ret4 := fibo2(~n - 1);< 5129#$Ultimate##0 ~n := #in~n; 5134#L20 assume !(~n < 1); 5133#L22 assume 1 == ~n;#res := 1; 5130#fibo2FINAL assume true; 5128#fibo2EXIT >#52#return; 4952#L15-1 call #t~ret5 := fibo2(~n - 2);< 4956#$Ultimate##0 ~n := #in~n; 5141#L20 assume ~n < 1;#res := 0; 5140#fibo2FINAL assume true; 5139#fibo2EXIT >#54#return; 5138#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5137#fibo1FINAL assume true; 5136#fibo1EXIT >#48#return; 5078#L25-1 call #t~ret7 := fibo1(~n - 2);< 5114#$Ultimate##0 ~n := #in~n; 5231#L10 assume ~n < 1;#res := 0; 5230#fibo1FINAL assume true; 5165#fibo1EXIT >#50#return; 5166#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5185#fibo2FINAL assume true; 5184#fibo2EXIT >#52#return; 5112#L15-1 call #t~ret5 := fibo2(~n - 2);< 5113#$Ultimate##0 [2023-11-06 22:34:52,783 INFO L750 eck$LassoCheckResult]: Loop: 5113#$Ultimate##0 ~n := #in~n; 5181#L20 assume !(~n < 1); 5180#L22 assume !(1 == ~n); 4941#L25 call #t~ret6 := fibo1(~n - 1);< 5122#$Ultimate##0 ~n := #in~n; 5124#L10 assume !(~n < 1); 5125#L12 assume !(1 == ~n); 5118#L15 call #t~ret4 := fibo2(~n - 1);< 5153#$Ultimate##0 ~n := #in~n; 5181#L20 assume !(~n < 1); 5180#L22 assume !(1 == ~n); 4941#L25 call #t~ret6 := fibo1(~n - 1);< 5122#$Ultimate##0 ~n := #in~n; 5124#L10 assume !(~n < 1); 5125#L12 assume !(1 == ~n); 5118#L15 call #t~ret4 := fibo2(~n - 1);< 5153#$Ultimate##0 ~n := #in~n; 5182#L20 assume !(~n < 1); 5207#L22 assume 1 == ~n;#res := 1; 5206#fibo2FINAL assume true; 5195#fibo2EXIT >#52#return; 5119#L15-1 call #t~ret5 := fibo2(~n - 2);< 5113#$Ultimate##0 ~n := #in~n; 5183#L20 assume ~n < 1;#res := 0; 5224#fibo2FINAL assume true; 5193#fibo2EXIT >#54#return; 5148#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5190#fibo1FINAL assume true; 5186#fibo1EXIT >#48#return; 5156#L25-1 call #t~ret7 := fibo1(~n - 2);< 5189#$Ultimate##0 ~n := #in~n; 5162#L10 assume !(~n < 1); 5164#L12 assume !(1 == ~n); 5147#L15 call #t~ret4 := fibo2(~n - 1);< 5157#$Ultimate##0 ~n := #in~n; 5194#L20 assume !(~n < 1); 5191#L22 assume !(1 == ~n); 5155#L25 call #t~ret6 := fibo1(~n - 1);< 5189#$Ultimate##0 ~n := #in~n; 5162#L10 assume !(~n < 1); 5164#L12 assume !(1 == ~n); 5147#L15 call #t~ret4 := fibo2(~n - 1);< 5157#$Ultimate##0 ~n := #in~n; 5194#L20 assume !(~n < 1); 5191#L22 assume 1 == ~n;#res := 1; 5192#fibo2FINAL assume true; 5196#fibo2EXIT >#52#return; 5119#L15-1 call #t~ret5 := fibo2(~n - 2);< 5113#$Ultimate##0 ~n := #in~n; 5183#L20 assume ~n < 1;#res := 0; 5224#fibo2FINAL assume true; 5193#fibo2EXIT >#54#return; 5148#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5190#fibo1FINAL assume true; 5186#fibo1EXIT >#48#return; 5156#L25-1 call #t~ret7 := fibo1(~n - 2);< 5189#$Ultimate##0 ~n := #in~n; 5162#L10 assume ~n < 1;#res := 0; 5163#fibo1FINAL assume true; 5188#fibo1EXIT >#50#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5152#fibo2FINAL assume true; 5145#fibo2EXIT >#52#return; 5119#L15-1 call #t~ret5 := fibo2(~n - 2);< 5113#$Ultimate##0 ~n := #in~n; 5183#L20 assume ~n < 1;#res := 0; 5224#fibo2FINAL assume true; 5193#fibo2EXIT >#54#return; 5148#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5190#fibo1FINAL assume true; 5186#fibo1EXIT >#50#return; 5187#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5152#fibo2FINAL assume true; 5145#fibo2EXIT >#52#return; 5119#L15-1 call #t~ret5 := fibo2(~n - 2);< 5113#$Ultimate##0 [2023-11-06 22:34:52,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1302122831, now seen corresponding path program 1 times [2023-11-06 22:34:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:52,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856595111] [2023-11-06 22:34:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:34:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:34:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:34:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:34:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856595111] [2023-11-06 22:34:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856595111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347089986] [2023-11-06 22:34:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:52,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:52,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:52,987 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:53,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-06 22:34:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:34:53,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:34:53,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:34:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347089986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:53,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2023-11-06 22:34:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076604514] [2023-11-06 22:34:53,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:53,323 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:34:53,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-06 22:34:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630823821] [2023-11-06 22:34:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:34:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:34:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:34:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:34:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:34:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:34:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 22:34:53,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:53,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630823821] [2023-11-06 22:34:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630823821] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638381017] [2023-11-06 22:34:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:53,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:53,649 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:53,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-06 22:34:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:53,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:34:53,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:34:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638381017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:54,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:54,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-06 22:34:54,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752854152] [2023-11-06 22:34:54,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:54,321 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:34:54,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:34:54,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:34:54,323 INFO L87 Difference]: Start difference. First operand 359 states and 496 transitions. cyclomatic complexity: 144 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-06 22:34:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:54,503 INFO L93 Difference]: Finished difference Result 387 states and 546 transitions. [2023-11-06 22:34:54,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 546 transitions. [2023-11-06 22:34:54,509 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:34:54,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 387 states and 546 transitions. [2023-11-06 22:34:54,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2023-11-06 22:34:54,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 209 [2023-11-06 22:34:54,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 387 states and 546 transitions. [2023-11-06 22:34:54,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:54,517 INFO L218 hiAutomatonCegarLoop]: Abstraction has 387 states and 546 transitions. [2023-11-06 22:34:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states and 546 transitions. [2023-11-06 22:34:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2023-11-06 22:34:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 238 states have (on average 1.2352941176470589) internal successors, (294), 269 states have internal predecessors, (294), 75 states have call successors, (78), 50 states have call predecessors, (78), 56 states have return successors, (136), 49 states have call predecessors, (136), 73 states have call successors, (136) [2023-11-06 22:34:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2023-11-06 22:34:54,542 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 508 transitions. [2023-11-06 22:34:54,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:34:54,543 INFO L428 stractBuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2023-11-06 22:34:54,543 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:34:54,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2023-11-06 22:34:54,547 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-06 22:34:54,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:54,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:54,551 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:54,551 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:54,551 INFO L748 eck$LassoCheckResult]: Stem: 6699#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6651#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6652#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6702#$Ultimate##0 ~n := #in~n; 6751#L10 assume !(~n < 1); 6750#L12 assume !(1 == ~n); 6701#L15 call #t~ret4 := fibo2(~n - 1);< 6748#$Ultimate##0 ~n := #in~n; 6747#L20 assume !(~n < 1); 6743#L22 assume !(1 == ~n); 6663#L25 call #t~ret6 := fibo1(~n - 1);< 6739#$Ultimate##0 ~n := #in~n; 6731#L10 assume !(~n < 1); 6732#L12 assume !(1 == ~n); 6718#L15 call #t~ret4 := fibo2(~n - 1);< 6719#$Ultimate##0 ~n := #in~n; 6737#L20 assume !(~n < 1); 6738#L22 assume !(1 == ~n); 6662#L25 call #t~ret6 := fibo1(~n - 1);< 6739#$Ultimate##0 ~n := #in~n; 6745#L10 assume !(~n < 1); 6835#L12 assume 1 == ~n;#res := 1; 6834#fibo1FINAL assume true; 6833#fibo1EXIT >#48#return; 6766#L25-1 call #t~ret7 := fibo1(~n - 2);< 6814#$Ultimate##0 ~n := #in~n; 6966#L10 assume ~n < 1;#res := 0; 6967#fibo1FINAL assume true; 6983#fibo1EXIT >#50#return; 6647#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6915#fibo2FINAL assume true; 6841#fibo2EXIT >#52#return; 6695#L15-1 [2023-11-06 22:34:54,552 INFO L750 eck$LassoCheckResult]: Loop: 6695#L15-1 call #t~ret5 := fibo2(~n - 2);< 6828#$Ultimate##0 ~n := #in~n; 6692#L20 assume !(~n < 1); 6698#L22 assume !(1 == ~n); 6649#L25 call #t~ret6 := fibo1(~n - 1);< 6822#$Ultimate##0 ~n := #in~n; 6920#L10 assume !(~n < 1); 6858#L12 assume !(1 == ~n); 6694#L15 call #t~ret4 := fibo2(~n - 1);< 6854#$Ultimate##0 ~n := #in~n; 6864#L20 assume !(~n < 1); 6875#L22 assume !(1 == ~n); 6876#L25 call #t~ret6 := fibo1(~n - 1);< 6897#$Ultimate##0 ~n := #in~n; 6900#L10 assume !(~n < 1); 6898#L12 assume 1 == ~n;#res := 1; 6894#fibo1FINAL assume true; 6895#fibo1EXIT >#48#return; 6881#L25-1 call #t~ret7 := fibo1(~n - 2);< 6882#$Ultimate##0 ~n := #in~n; 6901#L10 assume ~n < 1;#res := 0; 6899#fibo1FINAL assume true; 6880#fibo1EXIT >#50#return; 6874#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6870#fibo2FINAL assume true; 6866#fibo2EXIT >#52#return; 6695#L15-1 [2023-11-06 22:34:54,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:54,552 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2023-11-06 22:34:54,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:54,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504312477] [2023-11-06 22:34:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:54,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:54,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:34:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:34:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:34:54,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504312477] [2023-11-06 22:34:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504312477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267953828] [2023-11-06 22:34:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:54,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:54,765 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:54,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-06 22:34:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:54,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:34:54,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:34:54,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:34:55,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267953828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:55,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:55,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2023-11-06 22:34:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944018639] [2023-11-06 22:34:55,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:55,173 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:34:55,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-06 22:34:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:55,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124902264] [2023-11-06 22:34:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:55,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:55,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:55,507 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:55,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:55,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:55,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:55,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:34:55,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:55,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:55,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration6_Loop [2023-11-06 22:34:55,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:55,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:55,509 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 22:34:55,511 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 22:34:55,514 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 22:34:55,517 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 22:34:55,519 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 22:34:55,524 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 22:34:55,527 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 22:34:55,529 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 22:34:55,532 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 22:34:55,581 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:55,581 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:34:55,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,585 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:55,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:55,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2023-11-06 22:34:55,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:55,614 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:55,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,621 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:55,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:55,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-06 22:34:55,653 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:55,653 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:55,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,658 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:55,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:55,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-06 22:34:55,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:55,684 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:55,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,689 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:55,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:55,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-06 22:34:55,714 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:34:55,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:34:55,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,720 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-06 22:34:55,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:55,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:55,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,751 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:34:55,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:55,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-06 22:34:55,784 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:34:55,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,788 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:55,789 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:55,789 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:55,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:55,789 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:34:55,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:55,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:55,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration6_Loop [2023-11-06 22:34:55,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:55,789 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:55,790 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 22:34:55,793 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 22:34:55,796 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 22:34:55,802 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 22:34:55,805 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 22:34:55,812 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 22:34:55,814 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 22:34:55,818 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 22:34:55,820 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 22:34:55,872 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:55,873 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:34:55,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,874 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,878 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 22:34:55,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:55,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:55,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:55,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:55,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:55,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:55,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:55,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-06 22:34:55,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:55,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,906 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,909 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 22:34:55,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:55,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:55,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:55,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:55,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:55,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:55,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:55,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-06 22:34:55,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:34:55,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,950 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,954 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 22:34:55,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-06 22:34:55,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:55,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:55,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:55,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:55,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:55,967 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:55,967 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:55,980 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:34:55,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:34:55,984 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:34:55,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:55,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:55,988 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:55,990 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:34:55,990 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:34:55,990 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:34:55,990 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:34:55,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-06 22:34:55,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,994 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:34:56,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:56,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:34:56,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:56,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:34:56,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:34:56,480 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-06 22:34:56,480 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 146 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:34:56,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:56,993 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 146. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1744 states and 2390 transitions. Complement of second has 46 states. [2023-11-06 22:34:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:34:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2023-11-06 22:34:56,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 32 letters. Loop has 26 letters. [2023-11-06 22:34:56,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:56,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 58 letters. Loop has 26 letters. [2023-11-06 22:34:56,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:56,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 32 letters. Loop has 52 letters. [2023-11-06 22:34:56,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:56,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1744 states and 2390 transitions. [2023-11-06 22:34:57,027 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 143 [2023-11-06 22:34:57,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1744 states to 1582 states and 2212 transitions. [2023-11-06 22:34:57,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 538 [2023-11-06 22:34:57,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 572 [2023-11-06 22:34:57,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1582 states and 2212 transitions. [2023-11-06 22:34:57,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:57,058 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1582 states and 2212 transitions. [2023-11-06 22:34:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states and 2212 transitions. [2023-11-06 22:34:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1505. [2023-11-06 22:34:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 954 states have (on average 1.2348008385744236) internal successors, (1178), 1084 states have internal predecessors, (1178), 316 states have call successors, (331), 191 states have call predecessors, (331), 235 states have return successors, (597), 229 states have call predecessors, (597), 314 states have call successors, (597) [2023-11-06 22:34:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2106 transitions. [2023-11-06 22:34:57,130 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1505 states and 2106 transitions. [2023-11-06 22:34:57,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:57,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:34:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:34:57,131 INFO L87 Difference]: Start difference. First operand 1505 states and 2106 transitions. Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:34:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:57,411 INFO L93 Difference]: Finished difference Result 1604 states and 1988 transitions. [2023-11-06 22:34:57,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1604 states and 1988 transitions. [2023-11-06 22:34:57,434 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 147 [2023-11-06 22:34:57,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1604 states to 594 states and 683 transitions. [2023-11-06 22:34:57,442 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2023-11-06 22:34:57,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2023-11-06 22:34:57,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 594 states and 683 transitions. [2023-11-06 22:34:57,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:57,444 INFO L218 hiAutomatonCegarLoop]: Abstraction has 594 states and 683 transitions. [2023-11-06 22:34:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states and 683 transitions. [2023-11-06 22:34:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 482. [2023-11-06 22:34:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 315 states have (on average 1.1587301587301588) internal successors, (365), 352 states have internal predecessors, (365), 99 states have call successors, (101), 76 states have call predecessors, (101), 68 states have return successors, (83), 53 states have call predecessors, (83), 65 states have call successors, (83) [2023-11-06 22:34:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 549 transitions. [2023-11-06 22:34:57,460 INFO L240 hiAutomatonCegarLoop]: Abstraction has 482 states and 549 transitions. [2023-11-06 22:34:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:34:57,461 INFO L428 stractBuchiCegarLoop]: Abstraction has 482 states and 549 transitions. [2023-11-06 22:34:57,461 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 22:34:57,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 482 states and 549 transitions. [2023-11-06 22:34:57,464 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 102 [2023-11-06 22:34:57,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:57,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:57,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:57,466 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:57,466 INFO L748 eck$LassoCheckResult]: Stem: 12400#$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(18, 2);call #Ultimate.allocInit(12, 3); 12375#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 12376#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12406#$Ultimate##0 ~n := #in~n; 12435#L10 assume !(~n < 1); 12433#L12 assume !(1 == ~n); 12385#L15 call #t~ret4 := fibo2(~n - 1);< 12427#$Ultimate##0 ~n := #in~n; 12422#L20 assume !(~n < 1); 12418#L22 assume !(1 == ~n); 12413#L25 call #t~ret6 := fibo1(~n - 1);< 12415#$Ultimate##0 ~n := #in~n; 12437#L10 assume !(~n < 1); 12440#L12 assume !(1 == ~n); 12430#L15 call #t~ret4 := fibo2(~n - 1);< 12431#$Ultimate##0 ~n := #in~n; 12443#L20 assume !(~n < 1); 12442#L22 assume 1 == ~n;#res := 1; 12439#fibo2FINAL assume true; 12429#fibo2EXIT >#52#return; 12424#L15-1 call #t~ret5 := fibo2(~n - 2);< 12425#$Ultimate##0 ~n := #in~n; 12438#L20 assume ~n < 1;#res := 0; 12428#fibo2FINAL assume true; 12423#fibo2EXIT >#54#return; 12419#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12416#fibo1FINAL assume true; 12411#fibo1EXIT >#48#return; 12408#L25-1 call #t~ret7 := fibo1(~n - 2);< 12410#$Ultimate##0 ~n := #in~n; 12475#L10 assume !(~n < 1); 12472#L12 assume 1 == ~n;#res := 1; 12473#fibo1FINAL assume true; 12407#fibo1EXIT >#50#return; 12384#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12386#fibo2FINAL assume true; 12635#fibo2EXIT >#52#return; 12455#L15-1 [2023-11-06 22:34:57,466 INFO L750 eck$LassoCheckResult]: Loop: 12455#L15-1 call #t~ret5 := fibo2(~n - 2);< 12466#$Ultimate##0 ~n := #in~n; 12462#L20 assume !(~n < 1); 12460#L22 assume !(1 == ~n); 12447#L25 call #t~ret6 := fibo1(~n - 1);< 12457#$Ultimate##0 ~n := #in~n; 12552#L10 assume !(~n < 1); 12551#L12 assume 1 == ~n;#res := 1; 12550#fibo1FINAL assume true; 12502#fibo1EXIT >#48#return; 12469#L25-1 call #t~ret7 := fibo1(~n - 2);< 12496#$Ultimate##0 ~n := #in~n; 12495#L10 assume !(~n < 1); 12494#L12 assume !(1 == ~n); 12456#L15 call #t~ret4 := fibo2(~n - 1);< 12464#$Ultimate##0 ~n := #in~n; 12465#L20 assume !(~n < 1); 12532#L22 assume 1 == ~n;#res := 1; 12528#fibo2FINAL assume true; 12482#fibo2EXIT >#52#return; 12455#L15-1 [2023-11-06 22:34:57,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash -562711824, now seen corresponding path program 1 times [2023-11-06 22:34:57,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:57,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149115843] [2023-11-06 22:34:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:57,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:57,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:57,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash -303531802, now seen corresponding path program 1 times [2023-11-06 22:34:57,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:57,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780637717] [2023-11-06 22:34:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:57,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:34:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:34:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:34:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:57,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780637717] [2023-11-06 22:34:57,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780637717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741427961] [2023-11-06 22:34:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:57,541 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:57,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-06 22:34:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:34:57,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:57,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:34:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741427961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:57,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:57,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-06 22:34:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446809261] [2023-11-06 22:34:57,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:57,682 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:34:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:34:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:34:57,683 INFO L87 Difference]: Start difference. First operand 482 states and 549 transitions. cyclomatic complexity: 81 Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:34:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:57,751 INFO L93 Difference]: Finished difference Result 326 states and 353 transitions. [2023-11-06 22:34:57,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 326 states and 353 transitions. [2023-11-06 22:34:57,755 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2023-11-06 22:34:57,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 326 states to 271 states and 298 transitions. [2023-11-06 22:34:57,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2023-11-06 22:34:57,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2023-11-06 22:34:57,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 271 states and 298 transitions. [2023-11-06 22:34:57,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:34:57,759 INFO L218 hiAutomatonCegarLoop]: Abstraction has 271 states and 298 transitions. [2023-11-06 22:34:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states and 298 transitions. [2023-11-06 22:34:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-11-06 22:34:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 181 states have (on average 1.1049723756906078) internal successors, (200), 196 states have internal predecessors, (200), 56 states have call successors, (57), 44 states have call predecessors, (57), 34 states have return successors, (41), 30 states have call predecessors, (41), 40 states have call successors, (41) [2023-11-06 22:34:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 298 transitions. [2023-11-06 22:34:57,767 INFO L240 hiAutomatonCegarLoop]: Abstraction has 271 states and 298 transitions. [2023-11-06 22:34:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:34:57,768 INFO L428 stractBuchiCegarLoop]: Abstraction has 271 states and 298 transitions. [2023-11-06 22:34:57,768 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 22:34:57,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 271 states and 298 transitions. [2023-11-06 22:34:57,770 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2023-11-06 22:34:57,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:34:57,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:34:57,771 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:57,772 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:57,772 INFO L748 eck$LassoCheckResult]: Stem: 13352#$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(18, 2);call #Ultimate.allocInit(12, 3); 13325#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 13326#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 13354#$Ultimate##0 ~n := #in~n; 13388#L10 assume !(~n < 1); 13386#L12 assume !(1 == ~n); 13339#L15 call #t~ret4 := fibo2(~n - 1);< 13380#$Ultimate##0 ~n := #in~n; 13375#L20 assume !(~n < 1); 13371#L22 assume !(1 == ~n); 13366#L25 call #t~ret6 := fibo1(~n - 1);< 13368#$Ultimate##0 ~n := #in~n; 13390#L10 assume !(~n < 1); 13393#L12 assume !(1 == ~n); 13383#L15 call #t~ret4 := fibo2(~n - 1);< 13384#$Ultimate##0 ~n := #in~n; 13395#L20 assume !(~n < 1); 13394#L22 assume 1 == ~n;#res := 1; 13392#fibo2FINAL assume true; 13382#fibo2EXIT >#52#return; 13377#L15-1 call #t~ret5 := fibo2(~n - 2);< 13378#$Ultimate##0 ~n := #in~n; 13391#L20 assume ~n < 1;#res := 0; 13381#fibo2FINAL assume true; 13376#fibo2EXIT >#54#return; 13372#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13369#fibo1FINAL assume true; 13364#fibo1EXIT >#48#return; 13361#L25-1 call #t~ret7 := fibo1(~n - 2);< 13362#$Ultimate##0 ~n := #in~n; 13435#L10 assume !(~n < 1); 13434#L12 assume !(1 == ~n); 13431#L15 call #t~ret4 := fibo2(~n - 1);< 13433#$Ultimate##0 ~n := #in~n; 13444#L20 assume !(~n < 1); 13442#L22 assume 1 == ~n;#res := 1; 13443#fibo2FINAL assume true; 13430#fibo2EXIT >#52#return; 13404#L15-1 [2023-11-06 22:34:57,772 INFO L750 eck$LassoCheckResult]: Loop: 13404#L15-1 call #t~ret5 := fibo2(~n - 2);< 13415#$Ultimate##0 ~n := #in~n; 13411#L20 assume !(~n < 1); 13408#L22 assume !(1 == ~n); 13398#L25 call #t~ret6 := fibo1(~n - 1);< 13405#$Ultimate##0 ~n := #in~n; 13420#L10 assume !(~n < 1); 13418#L12 assume !(1 == ~n); 13403#L15 call #t~ret4 := fibo2(~n - 1);< 13413#$Ultimate##0 ~n := #in~n; 13414#L20 assume !(~n < 1); 13452#L22 assume 1 == ~n;#res := 1; 13447#fibo2FINAL assume true; 13432#fibo2EXIT >#52#return; 13404#L15-1 [2023-11-06 22:34:57,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 794867286, now seen corresponding path program 1 times [2023-11-06 22:34:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322982873] [2023-11-06 22:34:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:34:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:34:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:34:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:34:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:34:57,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:57,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322982873] [2023-11-06 22:34:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322982873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:57,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674913321] [2023-11-06 22:34:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:57,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:57,929 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:57,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-06 22:34:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:57,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:57,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:34:58,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:34:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674913321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:58,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2023-11-06 22:34:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783870776] [2023-11-06 22:34:58,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:58,170 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:34:58,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-06 22:34:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:58,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833347582] [2023-11-06 22:34:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:58,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:58,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:34:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:34:58,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:34:58,367 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:58,367 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:58,367 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:58,367 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:58,367 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:34:58,367 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:58,367 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:58,368 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:58,368 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2023-11-06 22:34:58,368 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:58,368 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:58,369 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 22:34:58,375 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 22:34:58,377 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 22:34:58,380 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 22:34:58,383 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 22:34:58,385 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 22:34:58,387 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 22:34:58,390 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 22:34:58,393 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 22:34:58,444 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:58,445 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:34:58,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:58,454 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:58,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:34:58,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:58,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-06 22:34:58,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:58,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:58,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:58,489 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:58,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:34:58,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:34:58,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-06 22:34:58,517 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:34:58,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:58,521 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:34:58,521 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:34:58,521 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:34:58,521 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:34:58,521 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:34:58,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:58,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:34:58,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:34:58,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2023-11-06 22:34:58,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:34:58,522 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:34:58,522 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 22:34:58,528 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 22:34:58,530 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 22:34:58,533 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 22:34:58,535 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 22:34:58,538 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 22:34:58,540 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 22:34:58,543 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 22:34:58,546 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 22:34:58,601 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:34:58,601 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:34:58,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:58,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:58,602 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:58,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-06 22:34:58,612 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 22:34:58,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:34:58,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:34:58,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:34:58,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:34:58,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:34:58,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:34:58,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:34:58,641 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:34:58,643 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:34:58,643 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:34:58,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:34:58,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:58,647 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:58,648 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:34:58,648 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:34:58,648 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:34:58,648 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:34:58,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-06 22:34:58,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:58,652 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:34:58,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:58,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:34:58,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:58,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:34:58,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:59,066 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-06 22:34:59,066 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 271 states and 298 transitions. cyclomatic complexity: 35 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:34:59,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:59,427 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 271 states and 298 transitions. cyclomatic complexity: 35. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 422 states and 463 transitions. Complement of second has 40 states. [2023-11-06 22:34:59,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-06 22:34:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:34:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 50 transitions. [2023-11-06 22:34:59,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 38 letters. Loop has 14 letters. [2023-11-06 22:34:59,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:34:59,431 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:34:59,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:59,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:34:59,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:59,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:34:59,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:59,860 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-06 22:34:59,860 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 271 states and 298 transitions. cyclomatic complexity: 35 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:35:00,109 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 271 states and 298 transitions. cyclomatic complexity: 35. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 344 states and 375 transitions. Complement of second has 26 states. [2023-11-06 22:35:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2023-11-06 22:35:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:35:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 31 transitions. [2023-11-06 22:35:00,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 31 transitions. Stem has 38 letters. Loop has 14 letters. [2023-11-06 22:35:00,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:00,115 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:35:00,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:00,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:35:00,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:00,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:35:00,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:00,531 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-06 22:35:00,531 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 271 states and 298 transitions. cyclomatic complexity: 35 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:35:00,946 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 271 states and 298 transitions. cyclomatic complexity: 35. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1102 states and 1208 transitions. Complement of second has 102 states. [2023-11-06 22:35:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-06 22:35:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:35:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 61 transitions. [2023-11-06 22:35:00,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 38 letters. Loop has 14 letters. [2023-11-06 22:35:00,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:00,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 52 letters. Loop has 14 letters. [2023-11-06 22:35:00,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:00,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 38 letters. Loop has 28 letters. [2023-11-06 22:35:00,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:00,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1102 states and 1208 transitions. [2023-11-06 22:35:00,962 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 162 [2023-11-06 22:35:00,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1102 states to 538 states and 595 transitions. [2023-11-06 22:35:00,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 252 [2023-11-06 22:35:00,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 270 [2023-11-06 22:35:00,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 538 states and 595 transitions. [2023-11-06 22:35:00,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:35:00,970 INFO L218 hiAutomatonCegarLoop]: Abstraction has 538 states and 595 transitions. [2023-11-06 22:35:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states and 595 transitions. [2023-11-06 22:35:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 419. [2023-11-06 22:35:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 281 states have (on average 1.092526690391459) internal successors, (307), 301 states have internal predecessors, (307), 82 states have call successors, (87), 70 states have call predecessors, (87), 56 states have return successors, (62), 47 states have call predecessors, (62), 61 states have call successors, (62) [2023-11-06 22:35:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 456 transitions. [2023-11-06 22:35:00,986 INFO L240 hiAutomatonCegarLoop]: Abstraction has 419 states and 456 transitions. [2023-11-06 22:35:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:35:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:35:00,987 INFO L87 Difference]: Start difference. First operand 419 states and 456 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:35:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:01,119 INFO L93 Difference]: Finished difference Result 229 states and 241 transitions. [2023-11-06 22:35:01,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 229 states and 241 transitions. [2023-11-06 22:35:01,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-06 22:35:01,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 229 states to 83 states and 86 transitions. [2023-11-06 22:35:01,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-06 22:35:01,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2023-11-06 22:35:01,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 86 transitions. [2023-11-06 22:35:01,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:35:01,123 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 86 transitions. [2023-11-06 22:35:01,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 86 transitions. [2023-11-06 22:35:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2023-11-06 22:35:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:35:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2023-11-06 22:35:01,126 INFO L240 hiAutomatonCegarLoop]: Abstraction has 66 states and 68 transitions. [2023-11-06 22:35:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:35:01,127 INFO L428 stractBuchiCegarLoop]: Abstraction has 66 states and 68 transitions. [2023-11-06 22:35:01,127 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 22:35:01,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 68 transitions. [2023-11-06 22:35:01,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-06 22:35:01,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:35:01,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:35:01,129 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:01,129 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-06 22:35:01,129 INFO L748 eck$LassoCheckResult]: Stem: 17104#$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(18, 2);call #Ultimate.allocInit(12, 3); 17091#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 17092#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17105#$Ultimate##0 ~n := #in~n; 17120#L10 assume !(~n < 1); 17117#L12 assume !(1 == ~n); 17083#L15 call #t~ret4 := fibo2(~n - 1);< 17113#$Ultimate##0 ~n := #in~n; 17111#L20 assume !(~n < 1); 17109#L22 assume !(1 == ~n); 17087#L25 call #t~ret6 := fibo1(~n - 1);< 17086#$Ultimate##0 ~n := #in~n; 17088#L10 assume !(~n < 1); 17095#L12 assume !(1 == ~n); 17076#L15 call #t~ret4 := fibo2(~n - 1);< 17075#$Ultimate##0 ~n := #in~n; 17077#L20 assume !(~n < 1); 17103#L22 assume 1 == ~n;#res := 1; 17122#fibo2FINAL assume true; 17119#fibo2EXIT >#52#return; 17115#L15-1 call #t~ret5 := fibo2(~n - 2);< 17116#$Ultimate##0 ~n := #in~n; 17121#L20 assume ~n < 1;#res := 0; 17118#fibo2FINAL assume true; 17114#fibo2EXIT >#54#return; 17106#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17107#fibo1FINAL assume true; 17108#fibo1EXIT >#48#return; 17081#L25-1 call #t~ret7 := fibo1(~n - 2);< 17084#$Ultimate##0 ~n := #in~n; 17112#L10 assume !(~n < 1); 17110#L12 assume 1 == ~n;#res := 1; 17080#fibo1FINAL assume true; 17082#fibo1EXIT >#50#return; 17085#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17093#fibo2FINAL assume true; 17099#fibo2EXIT >#52#return; 17072#L15-1 [2023-11-06 22:35:01,129 INFO L750 eck$LassoCheckResult]: Loop: 17072#L15-1 call #t~ret5 := fibo2(~n - 2);< 17078#$Ultimate##0 ~n := #in~n; 17079#L20 assume !(~n < 1); 17071#L22 assume !(1 == ~n); 17074#L25 call #t~ret6 := fibo1(~n - 1);< 17089#$Ultimate##0 ~n := #in~n; 17090#L10 assume !(~n < 1); 17096#L12 assume !(1 == ~n); 17097#L15 call #t~ret4 := fibo2(~n - 1);< 17102#$Ultimate##0 ~n := #in~n; 17125#L20 assume !(~n < 1); 17132#L22 assume !(1 == ~n); 17094#L25 call #t~ret6 := fibo1(~n - 1);< 17131#$Ultimate##0 ~n := #in~n; 17130#L10 assume !(~n < 1); 17128#L12 assume !(1 == ~n); 17069#L15 call #t~ret4 := fibo2(~n - 1);< 17124#$Ultimate##0 ~n := #in~n; 17123#L20 assume !(~n < 1); 17068#L22 assume 1 == ~n;#res := 1; 17070#fibo2FINAL assume true; 17133#fibo2EXIT >#52#return; 17072#L15-1 [2023-11-06 22:35:01,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash -562711824, now seen corresponding path program 2 times [2023-11-06 22:35:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535776020] [2023-11-06 22:35:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:01,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:35:01,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:35:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:35:01,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:35:01,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:01,147 INFO L85 PathProgramCache]: Analyzing trace with hash 878078665, now seen corresponding path program 2 times [2023-11-06 22:35:01,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:01,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311307070] [2023-11-06 22:35:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:01,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:35:01,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:35:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:35:01,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:35:01,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1575530616, now seen corresponding path program 3 times [2023-11-06 22:35:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:01,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205327456] [2023-11-06 22:35:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:35:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:35:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:35:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:35:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:35:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:35:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 22:35:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205327456] [2023-11-06 22:35:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205327456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144730536] [2023-11-06 22:35:01,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:35:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:35:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:01,295 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:35:01,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-06 22:35:01,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:35:01,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:35:01,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:35:01,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:35:01,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:35:01,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144730536] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:01,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:35:01,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 24 [2023-11-06 22:35:01,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407738868] [2023-11-06 22:35:01,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:02,074 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:35:02,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:35:02,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:35:02,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:35:02,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:35:02,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:35:02,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:35:02,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:35:02,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration9_Loop [2023-11-06 22:35:02,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:35:02,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:35:02,076 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 22:35:02,086 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 22:35:02,089 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 22:35:02,092 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 22:35:02,094 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 22:35:02,097 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 22:35:02,100 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 22:35:02,101 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 22:35:02,103 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 22:35:02,159 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:35:02,160 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:35:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:35:02,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:02,161 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:35:02,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-06 22:35:02,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:35:02,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:35:02,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:02,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:35:02,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:02,188 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:35:02,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-06 22:35:02,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:35:02,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:35:02,220 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:35:02,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2023-11-06 22:35:02,223 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:35:02,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:35:02,223 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:35:02,223 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:35:02,223 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:35:02,223 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:35:02,223 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:35:02,223 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:35:02,223 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration9_Loop [2023-11-06 22:35:02,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:35:02,224 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:35:02,224 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 22:35:02,234 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 22:35:02,237 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 22:35:02,239 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 22:35:02,242 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 22:35:02,245 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 22:35:02,247 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 22:35:02,249 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 22:35:02,250 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 22:35:02,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:35:02,303 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:35:02,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:35:02,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:02,304 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:35:02,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 22:35:02,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:35:02,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:35:02,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:35:02,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:35:02,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:35:02,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:35:02,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:35:02,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-06 22:35:02,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:35:02,345 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:35:02,345 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:35:02,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:35:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:02,353 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:35:02,357 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:35:02,357 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:35:02,357 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:35:02,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-06 22:35:02,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-06 22:35:02,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:02,361 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:35:02,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:02,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:35:02,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:02,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:35:02,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:02,903 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2023-11-06 22:35:02,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:03,029 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 73 states and 75 transitions. Complement of second has 11 states. [2023-11-06 22:35:03,029 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 22:35:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2023-11-06 22:35:03,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 37 letters. Loop has 22 letters. [2023-11-06 22:35:03,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:03,031 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:35:03,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:03,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:35:03,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:03,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:03,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:35:03,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:03,641 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2023-11-06 22:35:03,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:03,766 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 73 states and 75 transitions. Complement of second has 11 states. [2023-11-06 22:35:03,769 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 22:35:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2023-11-06 22:35:03,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 37 letters. Loop has 22 letters. [2023-11-06 22:35:03,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:03,770 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:35:03,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:03,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:35:03,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:04,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:35:04,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:04,355 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 12 loop predicates [2023-11-06 22:35:04,355 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:04,703 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 192 states and 200 transitions. Complement of second has 91 states. [2023-11-06 22:35:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-06 22:35:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 53 transitions. [2023-11-06 22:35:04,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 37 letters. Loop has 22 letters. [2023-11-06 22:35:04,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:04,706 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:35:04,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:04,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:35:04,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:05,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:35:05,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:05,285 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2023-11-06 22:35:05,286 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:05,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 68 transitions. cyclomatic complexity: 3. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 107 states and 112 transitions. Complement of second has 35 states. [2023-11-06 22:35:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2023-11-06 22:35:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-06 22:35:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 51 transitions. [2023-11-06 22:35:05,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 51 transitions. Stem has 37 letters. Loop has 22 letters. [2023-11-06 22:35:05,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:05,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 51 transitions. Stem has 59 letters. Loop has 22 letters. [2023-11-06 22:35:05,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:05,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 51 transitions. Stem has 37 letters. Loop has 44 letters. [2023-11-06 22:35:05,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:35:05,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 112 transitions. [2023-11-06 22:35:05,804 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:35:05,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 0 states and 0 transitions. [2023-11-06 22:35:05,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:35:05,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:35:05,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:35:05,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:05,804 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:35:05,805 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:35:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:35:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:35:05,806 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 24 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 16 states have internal predecessors, (54), 12 states have call successors, (20), 10 states have call predecessors, (20), 2 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:35:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:35:05,806 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-06 22:35:05,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-06 22:35:05,806 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:35:05,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:35:05,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:35:05,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:35:05,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:35:05,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:05,807 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:35:05,807 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:35:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:35:05,807 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:35:05,807 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-06 22:35:05,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:35:05,807 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:35:05,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 22:35:05,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:35:05 BoogieIcfgContainer [2023-11-06 22:35:05,815 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:35:05,815 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:35:05,815 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:35:05,816 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:35:05,816 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:43" (3/4) ... [2023-11-06 22:35:05,818 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:35:05,819 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:35:05,820 INFO L158 Benchmark]: Toolchain (without parser) took 22946.50ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 85.8MB in the beginning and 110.5MB in the end (delta: -24.7MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2023-11-06 22:35:05,820 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:35:05,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.72ms. Allocated memory is still 130.0MB. Free memory was 85.7MB in the beginning and 75.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:35:05,821 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.61ms. Allocated memory is still 130.0MB. Free memory was 75.5MB in the beginning and 74.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:35:05,821 INFO L158 Benchmark]: Boogie Preprocessor took 22.22ms. Allocated memory is still 130.0MB. Free memory was 74.1MB in the beginning and 73.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:35:05,822 INFO L158 Benchmark]: RCFGBuilder took 336.09ms. Allocated memory is still 130.0MB. Free memory was 72.8MB in the beginning and 101.9MB in the end (delta: -29.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-11-06 22:35:05,822 INFO L158 Benchmark]: BuchiAutomizer took 22231.20ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 101.9MB in the beginning and 110.5MB in the end (delta: -8.6MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. [2023-11-06 22:35:05,822 INFO L158 Benchmark]: Witness Printer took 3.82ms. Allocated memory is still 232.8MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:35:05,824 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.72ms. Allocated memory is still 130.0MB. Free memory was 85.7MB in the beginning and 75.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.61ms. Allocated memory is still 130.0MB. Free memory was 75.5MB in the beginning and 74.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.22ms. Allocated memory is still 130.0MB. Free memory was 74.1MB in the beginning and 73.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.09ms. Allocated memory is still 130.0MB. Free memory was 72.8MB in the beginning and 101.9MB in the end (delta: -29.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 22231.20ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 101.9MB in the beginning and 110.5MB in the end (delta: -8.6MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. * Witness Printer took 3.82ms. Allocated memory is still 232.8MB. Free memory is still 110.5MB. 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 14 terminating modules (8 trivial, 3 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function n and consists of 14 locations. 8 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 10.0s. Construction of modules took 1.9s. Büchi inclusion checks took 9.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 12. Automata minimization 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 516 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 9/33 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 959 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 928 mSDsluCounter, 1503 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1041 mSDsCounter, 443 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2477 IncrementalHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 443 mSolverCounterUnsat, 462 mSDtfsCounter, 2477 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI2 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf90 smp82 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 22 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s 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 22:35:05,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:06,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:06,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-11-06 22:35:06,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-06 22:35:06,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-06 22:35:06,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-06 22:35:07,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-06 22:35:07,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-06 22:35:07,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21f66bf-cbd2-4367-9e44-dc17e6cf32cc/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