./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 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_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/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_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/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_c16673a0-e73f-4c47-b4e9-8c3ec331d606/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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:06:06,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:06:06,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:06:06,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:06:06,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:06:06,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:06:06,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:06:06,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:06:06,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:06:06,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:06:06,341 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:06:06,342 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:06:06,342 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:06:06,344 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:06:06,344 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:06:06,345 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:06:06,345 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:06:06,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:06:06,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:06:06,347 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:06:06,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:06:06,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:06:06,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:06:06,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:06:06,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:06:06,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:06:06,350 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:06:06,350 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:06:06,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:06:06,351 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:06:06,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:06:06,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:06:06,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:06:06,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:06:06,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:06:06,354 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:06:06,354 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_c16673a0-e73f-4c47-b4e9-8c3ec331d606/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2023-11-06 22:06:06,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:06:06,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:06:06,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:06:06,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:06:06,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:06:06,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2023-11-06 22:06:09,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:06:09,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:06:09,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2023-11-06 22:06:09,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/data/931c2bfc8/f75d7ceeddff42679ab9e651581abbd1/FLAGc9e1a4735 [2023-11-06 22:06:10,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/data/931c2bfc8/f75d7ceeddff42679ab9e651581abbd1 [2023-11-06 22:06:10,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:06:10,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:06:10,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:06:10,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:06:10,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:06:10,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4355c84e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10, skipping insertion in model container [2023-11-06 22:06:10,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,049 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:06:10,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:06:10,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:06:10,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:06:10,253 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:06:10,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10 WrapperNode [2023-11-06 22:06:10,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:06:10,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:06:10,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:06:10,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:06:10,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,288 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-06 22:06:10,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:06:10,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:06:10,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:06:10,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:06:10,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:06:10,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:06:10,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:06:10,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:06:10,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (1/1) ... [2023-11-06 22:06:10,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:10,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:10,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:06:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:06:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:06:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:06:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:06:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-11-06 22:06:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-11-06 22:06:10,440 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:06:10,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:06:10,546 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:06:10,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:06:10,553 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:06:10,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:10 BoogieIcfgContainer [2023-11-06 22:06:10,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:06:10,556 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:06:10,556 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:06:10,560 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:06:10,561 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:06:10,561 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:06:10" (1/3) ... [2023-11-06 22:06:10,562 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6350e881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:06:10, skipping insertion in model container [2023-11-06 22:06:10,562 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:06:10,563 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:10" (2/3) ... [2023-11-06 22:06:10,563 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6350e881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:06:10, skipping insertion in model container [2023-11-06 22:06:10,563 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:06:10,563 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:10" (3/3) ... [2023-11-06 22:06:10,565 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2023-11-06 22:06:10,640 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:06:10,640 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:06:10,641 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:06:10,641 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:06:10,641 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:06:10,641 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:06:10,641 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:06:10,642 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:06:10,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:06:10,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:10,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:10,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:10,680 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:06:10,681 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:06:10,681 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:06:10,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:06:10,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:10,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:10,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:10,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:06:10,685 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:06:10,690 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2023-11-06 22:06:10,691 INFO L750 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2023-11-06 22:06:10,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2023-11-06 22:06:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625645918] [2023-11-06 22:06:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:10,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:06:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:10,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:06:10,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2023-11-06 22:06:10,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:10,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327914987] [2023-11-06 22:06:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:10,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:10,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:06:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:10,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:06:10,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2023-11-06 22:06:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446668163] [2023-11-06 22:06:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:10,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:06:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:10,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:06:11,096 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:06:11,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:06:11,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:06:11,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:06:11,099 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:06:11,100 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,100 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:06:11,100 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:06:11,100 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2023-11-06 22:06:11,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:06:11,101 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:06:11,119 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 22:06:11,130 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 22:06:11,154 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 22:06:11,160 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 22:06:11,174 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 22:06:11,265 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:06:11,265 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:06:11,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:06:11,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:11,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:11,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:11,299 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:11,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-06 22:06:11,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:11,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:11,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:06:11,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:11,335 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:11,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:06:11,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:11,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:11,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:11,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:11,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:06:11,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:11,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:11,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:06:11,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:11,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:06:11,509 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:06:11,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,512 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:06:11,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:06:11,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:06:11,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:06:11,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:06:11,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,513 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:06:11,513 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:06:11,513 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2023-11-06 22:06:11,513 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:06:11,514 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:06:11,515 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 22:06:11,518 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 22:06:11,521 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 22:06:11,524 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 22:06:11,533 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 22:06:11,583 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:06:11,588 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:06:11,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:06:11,604 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 22:06:11,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:11,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:11,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:11,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:11,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:11,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:11,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:11,636 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:11,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:06:11,657 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 22:06:11,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:11,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:11,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:11,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:11,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:11,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:11,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:11,680 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:11,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,710 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 22:06:11,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:11,722 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:11,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:11,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:11,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:06:11,724 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:11,724 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:11,733 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:11,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,753 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 22:06:11,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:11,766 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:11,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:11,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:11,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:11,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:06:11,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:11,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:11,784 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:06:11,797 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:06:11,798 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:06:11,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:11,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:11,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:11,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:06:11,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:06:11,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:06:11,841 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:06:11,842 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2023-11-06 22:06:11,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:11,852 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:06:11,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:11,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:06:11,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:11,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:06:11,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:11,973 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 22:06:12,021 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-06 22:06:12,025 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:12,138 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 61 transitions. Complement of second has 12 states. [2023-11-06 22:06:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-06 22:06:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-11-06 22:06:12,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-06 22:06:12,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:12,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-06 22:06:12,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:12,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-06 22:06:12,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:12,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2023-11-06 22:06:12,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:12,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 25 states and 34 transitions. [2023-11-06 22:06:12,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-06 22:06:12,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-06 22:06:12,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2023-11-06 22:06:12,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:12,166 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-11-06 22:06:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2023-11-06 22:06:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2023-11-06 22:06:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:06:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-11-06 22:06:12,197 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-06 22:06:12,198 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-06 22:06:12,198 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:06:12,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2023-11-06 22:06:12,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:12,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:12,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:12,201 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:12,201 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:12,201 INFO L748 eck$LassoCheckResult]: Stem: 138#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 124#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 127#L13 call #t~ret4 := fibo(~n - 1);< 126#$Ultimate##0 ~n := #in~n; 128#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#35#return; 130#L13-1 [2023-11-06 22:06:12,201 INFO L750 eck$LassoCheckResult]: Loop: 130#L13-1 call #t~ret5 := fibo(~n - 2);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume !(~n < 1); 142#L10 assume !(1 == ~n); 129#L13 call #t~ret4 := fibo(~n - 1);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume ~n < 1;#res := 0; 133#fiboFINAL assume true; 140#fiboEXIT >#35#return; 130#L13-1 [2023-11-06 22:06:12,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2023-11-06 22:06:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267346988] [2023-11-06 22:06:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:06:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,360 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 22:06:12,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267346988] [2023-11-06 22:06:12,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267346988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:12,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:12,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:06:12,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243934789] [2023-11-06 22:06:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:12,365 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:06:12,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:12,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2023-11-06 22:06:12,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:12,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447554872] [2023-11-06 22:06:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:12,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:06:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:12,469 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 22:06:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447554872] [2023-11-06 22:06:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447554872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:12,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:06:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17258982] [2023-11-06 22:06:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:12,486 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:06:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:06:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:06:12,490 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:06:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:12,600 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-11-06 22:06:12,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2023-11-06 22:06:12,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:12,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2023-11-06 22:06:12,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-06 22:06:12,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-06 22:06:12,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2023-11-06 22:06:12,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:12,605 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-06 22:06:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2023-11-06 22:06:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-06 22:06:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-06 22:06:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-06 22:06:12,609 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-06 22:06:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:06:12,613 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-06 22:06:12,613 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:06:12,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2023-11-06 22:06:12,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:12,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:12,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:12,618 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:12,618 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:12,618 INFO L748 eck$LassoCheckResult]: Stem: 209#$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(12, 2);call #Ultimate.allocInit(12, 3); 210#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 197#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 196#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 212#L10 assume !(1 == ~n); 200#L13 call #t~ret4 := fibo(~n - 1);< 199#$Ultimate##0 ~n := #in~n; 201#L8 assume !(~n < 1); 211#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 216#fiboEXIT >#35#return; 203#L13-1 [2023-11-06 22:06:12,618 INFO L750 eck$LassoCheckResult]: Loop: 203#L13-1 call #t~ret5 := fibo(~n - 2);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume !(1 == ~n); 204#L13 call #t~ret4 := fibo(~n - 1);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume 1 == ~n;#res := 1; 218#fiboFINAL assume true; 214#fiboEXIT >#35#return; 203#L13-1 [2023-11-06 22:06:12,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2023-11-06 22:06:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736418089] [2023-11-06 22:06:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:06:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,800 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 22:06:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736418089] [2023-11-06 22:06:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736418089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388293842] [2023-11-06 22:06:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:12,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:12,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:12,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:12,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:06:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:12,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:12,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:12,889 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 22:06:12,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:12,996 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 22:06:12,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388293842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:12,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-06 22:06:12,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774750481] [2023-11-06 22:06:12,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:12,997 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:06:12,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2023-11-06 22:06:12,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:12,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628222935] [2023-11-06 22:06:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:13,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:06:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:13,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:06:13,139 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:06:13,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:06:13,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:06:13,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:06:13,140 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:06:13,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:06:13,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:06:13,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2023-11-06 22:06:13,140 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:06:13,140 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:06:13,141 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 22:06:13,145 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 22:06:13,147 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 22:06:13,152 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 22:06:13,155 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 22:06:13,195 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:06:13,195 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:06:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,200 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:13,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:13,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:06:13,232 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:13,232 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:13,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:06:13,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:13,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:13,256 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:13,256 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:13,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,261 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:06:13,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:13,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:13,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,285 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:06:13,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:06:13,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:13,310 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:06:13,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,320 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:06:13,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:06:13,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:06:13,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:06:13,320 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:06:13,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:06:13,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:06:13,321 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2023-11-06 22:06:13,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:06:13,321 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:06:13,322 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 22:06:13,327 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 22:06:13,330 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 22:06:13,333 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 22:06:13,339 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 22:06:13,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:06:13,395 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:06:13,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,396 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,400 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 22:06:13,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:13,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:13,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:13,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:13,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:13,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:13,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:13,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:06:13,428 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:13,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,437 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,449 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 22:06:13,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 22:06:13,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:13,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:13,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:13,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:13,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:13,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:13,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:13,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:13,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,480 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:06:13,483 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 22:06:13,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:13,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:13,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:13,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:13,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:13,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:13,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:13,496 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:13,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,499 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 22:06:13,505 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 22:06:13,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:13,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:13,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:13,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:13,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:13,517 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:13,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:13,520 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:06:13,525 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 22:06:13,525 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 22:06:13,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:13,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:13,532 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:13,534 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:06:13,534 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:06:13,534 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:06:13,534 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-06 22:06:13,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 22:06:13,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:13,542 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:06:13,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:13,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:13,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:13,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:06:13,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:13,854 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 22:06:13,855 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-06 22:06:13,855 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:06:14,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:14,155 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2023-11-06 22:06:14,155 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 22:06:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:06:14,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2023-11-06 22:06:14,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2023-11-06 22:06:14,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:14,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2023-11-06 22:06:14,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:14,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2023-11-06 22:06:14,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:14,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2023-11-06 22:06:14,180 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-06 22:06:14,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2023-11-06 22:06:14,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2023-11-06 22:06:14,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2023-11-06 22:06:14,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2023-11-06 22:06:14,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:14,193 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2023-11-06 22:06:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2023-11-06 22:06:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2023-11-06 22:06:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2023-11-06 22:06:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2023-11-06 22:06:14,225 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2023-11-06 22:06:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:06:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:06:14,227 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:06:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:14,357 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2023-11-06 22:06:14,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2023-11-06 22:06:14,368 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-06 22:06:14,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2023-11-06 22:06:14,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2023-11-06 22:06:14,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2023-11-06 22:06:14,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2023-11-06 22:06:14,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:14,381 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2023-11-06 22:06:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2023-11-06 22:06:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2023-11-06 22:06:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2023-11-06 22:06:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2023-11-06 22:06:14,406 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-06 22:06:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:06:14,407 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-06 22:06:14,407 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:06:14,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2023-11-06 22:06:14,409 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-06 22:06:14,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:14,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:14,411 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:14,412 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-06 22:06:14,412 INFO L748 eck$LassoCheckResult]: Stem: 820#$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(12, 2);call #Ultimate.allocInit(12, 3); 821#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 805#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 806#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 825#L10 assume !(1 == ~n); 793#L13 call #t~ret4 := fibo(~n - 1);< 792#$Ultimate##0 ~n := #in~n; 794#L8 assume !(~n < 1); 831#L10 assume !(1 == ~n); 803#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 854#L8 assume !(~n < 1); 852#L10 assume 1 == ~n;#res := 1; 850#fiboFINAL assume true; 849#fiboEXIT >#35#return; 796#L13-1 call #t~ret5 := fibo(~n - 2);< 848#$Ultimate##0 ~n := #in~n; 822#L8 assume ~n < 1;#res := 0; 823#fiboFINAL assume true; 890#fiboEXIT >#37#return; 889#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 887#fiboFINAL assume true; 879#fiboEXIT >#35#return; 829#L13-1 [2023-11-06 22:06:14,412 INFO L750 eck$LassoCheckResult]: Loop: 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume ~n < 1;#res := 0; 885#fiboFINAL assume true; 883#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#35#return; 829#L13-1 [2023-11-06 22:06:14,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2023-11-06 22:06:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602197777] [2023-11-06 22:06:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:06:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:06:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:14,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602197777] [2023-11-06 22:06:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602197777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810429019] [2023-11-06 22:06:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:14,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:14,648 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:14,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:06:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:06:14,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:06:14,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810429019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:15,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:15,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2023-11-06 22:06:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276194626] [2023-11-06 22:06:15,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:15,107 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:06:15,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2033249087, now seen corresponding path program 1 times [2023-11-06 22:06:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:15,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892914134] [2023-11-06 22:06:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:06:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 22:06:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:15,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892914134] [2023-11-06 22:06:15,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892914134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:15,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256532414] [2023-11-06 22:06:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:15,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:15,344 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:15,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:06:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:15,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:06:15,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:06:15,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-06 22:06:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256532414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:15,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:15,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-06 22:06:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701316436] [2023-11-06 22:06:15,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:15,643 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:06:15,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:15,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:06:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:06:15,645 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 22:06:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:16,074 INFO L93 Difference]: Finished difference Result 174 states and 225 transitions. [2023-11-06 22:06:16,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 225 transitions. [2023-11-06 22:06:16,078 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2023-11-06 22:06:16,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 163 states and 214 transitions. [2023-11-06 22:06:16,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2023-11-06 22:06:16,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2023-11-06 22:06:16,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 214 transitions. [2023-11-06 22:06:16,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:16,084 INFO L218 hiAutomatonCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-06 22:06:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 214 transitions. [2023-11-06 22:06:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-06 22:06:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 108 states have internal predecessors, (117), 39 states have call successors, (40), 21 states have call predecessors, (40), 22 states have return successors, (57), 33 states have call predecessors, (57), 36 states have call successors, (57) [2023-11-06 22:06:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2023-11-06 22:06:16,098 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-06 22:06:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:06:16,100 INFO L428 stractBuchiCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-06 22:06:16,100 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:06:16,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 214 transitions. [2023-11-06 22:06:16,102 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2023-11-06 22:06:16,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:16,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:16,105 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:16,105 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 6, 4, 4, 4, 4, 3, 3, 2, 2] [2023-11-06 22:06:16,105 INFO L748 eck$LassoCheckResult]: Stem: 1633#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 1634#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 1623#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1624#$Ultimate##0 ~n := #in~n; 1683#L8 assume !(~n < 1); 1684#L10 assume !(1 == ~n); 1607#L13 call #t~ret4 := fibo(~n - 1);< 1606#$Ultimate##0 ~n := #in~n; 1608#L8 assume !(~n < 1); 1632#L10 assume !(1 == ~n); 1615#L13 call #t~ret4 := fibo(~n - 1);< 1616#$Ultimate##0 ~n := #in~n; 1682#L8 assume !(~n < 1); 1681#L10 assume !(1 == ~n); 1618#L13 call #t~ret4 := fibo(~n - 1);< 1680#$Ultimate##0 ~n := #in~n; 1679#L8 assume !(~n < 1); 1678#L10 assume !(1 == ~n); 1674#L13 call #t~ret4 := fibo(~n - 1);< 1677#$Ultimate##0 ~n := #in~n; 1676#L8 assume !(~n < 1); 1675#L10 assume !(1 == ~n); 1670#L13 call #t~ret4 := fibo(~n - 1);< 1673#$Ultimate##0 ~n := #in~n; 1672#L8 assume !(~n < 1); 1671#L10 assume !(1 == ~n); 1660#L13 call #t~ret4 := fibo(~n - 1);< 1664#$Ultimate##0 ~n := #in~n; 1668#L8 assume !(~n < 1); 1666#L10 assume !(1 == ~n); 1659#L13 call #t~ret4 := fibo(~n - 1);< 1664#$Ultimate##0 ~n := #in~n; 1668#L8 assume !(~n < 1); 1666#L10 assume !(1 == ~n); 1659#L13 call #t~ret4 := fibo(~n - 1);< 1664#$Ultimate##0 ~n := #in~n; 1669#L8 assume !(~n < 1); 1667#L10 assume 1 == ~n;#res := 1; 1665#fiboFINAL assume true; 1663#fiboEXIT >#35#return; 1638#L13-1 call #t~ret5 := fibo(~n - 2);< 1661#$Ultimate##0 ~n := #in~n; 1755#L8 assume ~n < 1;#res := 0; 1751#fiboFINAL assume true; 1750#fiboEXIT >#37#return; 1748#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1746#fiboFINAL assume true; 1723#fiboEXIT >#35#return; 1710#L13-1 [2023-11-06 22:06:16,106 INFO L750 eck$LassoCheckResult]: Loop: 1710#L13-1 call #t~ret5 := fibo(~n - 2);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume 1 == ~n;#res := 1; 1740#fiboFINAL assume true; 1706#fiboEXIT >#35#return; 1714#L13-1 call #t~ret5 := fibo(~n - 2);< 1732#$Ultimate##0 ~n := #in~n; 1745#L8 assume ~n < 1;#res := 0; 1744#fiboFINAL assume true; 1754#fiboEXIT >#37#return; 1717#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1749#fiboFINAL assume true; 1724#fiboEXIT >#35#return; 1710#L13-1 call #t~ret5 := fibo(~n - 2);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume 1 == ~n;#res := 1; 1740#fiboFINAL assume true; 1706#fiboEXIT >#35#return; 1714#L13-1 call #t~ret5 := fibo(~n - 2);< 1732#$Ultimate##0 ~n := #in~n; 1745#L8 assume ~n < 1;#res := 0; 1744#fiboFINAL assume true; 1754#fiboEXIT >#37#return; 1717#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1749#fiboFINAL assume true; 1724#fiboEXIT >#37#return; 1715#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1764#fiboFINAL assume true; 1728#fiboEXIT >#35#return; 1710#L13-1 [2023-11-06 22:06:16,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash -683438758, now seen corresponding path program 2 times [2023-11-06 22:06:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174317949] [2023-11-06 22:06:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:06:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:06:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174317949] [2023-11-06 22:06:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174317949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814057078] [2023-11-06 22:06:16,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:16,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:16,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:16,555 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:16,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:06:16,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:06:16,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:16,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:06:16,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:06:16,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 155 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:06:17,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814057078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:17,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:17,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 23 [2023-11-06 22:06:17,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992811215] [2023-11-06 22:06:17,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:17,101 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:06:17,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1487778613, now seen corresponding path program 2 times [2023-11-06 22:06:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:17,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275899753] [2023-11-06 22:06:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:06:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:06:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 31 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 22:06:17,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275899753] [2023-11-06 22:06:17,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275899753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636263123] [2023-11-06 22:06:17,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:17,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:17,380 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:17,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:06:17,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:06:17,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:17,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:06:17,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 38 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-06 22:06:17,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 41 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-06 22:06:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636263123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:17,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 17 [2023-11-06 22:06:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827145229] [2023-11-06 22:06:17,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:17,973 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:06:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:06:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:06:17,975 INFO L87 Difference]: Start difference. First operand 163 states and 214 transitions. cyclomatic complexity: 57 Second operand has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 11 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-06 22:06:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:18,117 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2023-11-06 22:06:18,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 147 transitions. [2023-11-06 22:06:18,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-06 22:06:18,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 112 states and 140 transitions. [2023-11-06 22:06:18,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2023-11-06 22:06:18,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2023-11-06 22:06:18,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 140 transitions. [2023-11-06 22:06:18,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:18,124 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 140 transitions. [2023-11-06 22:06:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 140 transitions. [2023-11-06 22:06:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2023-11-06 22:06:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 24 states have call successors, (24), 16 states have call predecessors, (24), 12 states have return successors, (30), 19 states have call predecessors, (30), 21 states have call successors, (30) [2023-11-06 22:06:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2023-11-06 22:06:18,132 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 127 transitions. [2023-11-06 22:06:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:06:18,138 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 127 transitions. [2023-11-06 22:06:18,138 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:06:18,138 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 127 transitions. [2023-11-06 22:06:18,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-06 22:06:18,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:18,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:18,142 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 9, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-06 22:06:18,143 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-06 22:06:18,143 INFO L748 eck$LassoCheckResult]: Stem: 2642#$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(12, 2);call #Ultimate.allocInit(12, 3); 2643#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 2632#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 2633#$Ultimate##0 ~n := #in~n; 2640#L8 assume !(~n < 1); 2641#L10 assume !(1 == ~n); 2620#L13 call #t~ret4 := fibo(~n - 1);< 2619#$Ultimate##0 ~n := #in~n; 2621#L8 assume !(~n < 1); 2695#L10 assume !(1 == ~n); 2636#L13 call #t~ret4 := fibo(~n - 1);< 2693#$Ultimate##0 ~n := #in~n; 2691#L8 assume !(~n < 1); 2689#L10 assume !(1 == ~n); 2683#L13 call #t~ret4 := fibo(~n - 1);< 2688#$Ultimate##0 ~n := #in~n; 2686#L8 assume !(~n < 1); 2685#L10 assume !(1 == ~n); 2675#L13 call #t~ret4 := fibo(~n - 1);< 2682#$Ultimate##0 ~n := #in~n; 2681#L8 assume !(~n < 1); 2680#L10 assume !(1 == ~n); 2655#L13 call #t~ret4 := fibo(~n - 1);< 2671#$Ultimate##0 ~n := #in~n; 2667#L8 assume !(~n < 1); 2665#L10 assume !(1 == ~n); 2627#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2651#L8 assume !(~n < 1); 2664#L10 assume !(1 == ~n); 2623#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2651#L8 assume !(~n < 1); 2664#L10 assume !(1 == ~n); 2623#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2651#L8 assume !(~n < 1); 2664#L10 assume !(1 == ~n); 2623#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2648#L8 assume !(~n < 1); 2644#L10 assume 1 == ~n;#res := 1; 2645#fiboFINAL assume true; 2694#fiboEXIT >#35#return; 2638#L13-1 call #t~ret5 := fibo(~n - 2);< 2649#$Ultimate##0 ~n := #in~n; 2637#L8 assume ~n < 1;#res := 0; 2639#fiboFINAL assume true; 2698#fiboEXIT >#37#return; 2697#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2696#fiboFINAL assume true; 2658#fiboEXIT >#35#return; 2653#L13-1 call #t~ret5 := fibo(~n - 2);< 2652#$Ultimate##0 ~n := #in~n; 2654#L8 assume ~n < 1;#res := 0; 2672#fiboFINAL assume true; 2668#fiboEXIT >#37#return; 2622#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2630#fiboFINAL assume true; 2634#fiboEXIT >#35#return; 2625#L13-1 [2023-11-06 22:06:18,143 INFO L750 eck$LassoCheckResult]: Loop: 2625#L13-1 call #t~ret5 := fibo(~n - 2);< 2663#$Ultimate##0 ~n := #in~n; 2678#L8 assume !(~n < 1); 2679#L10 assume !(1 == ~n); 2628#L13 call #t~ret4 := fibo(~n - 1);< 2659#$Ultimate##0 ~n := #in~n; 2687#L8 assume !(~n < 1); 2679#L10 assume !(1 == ~n); 2628#L13 call #t~ret4 := fibo(~n - 1);< 2659#$Ultimate##0 ~n := #in~n; 2687#L8 assume !(~n < 1); 2679#L10 assume !(1 == ~n); 2628#L13 call #t~ret4 := fibo(~n - 1);< 2659#$Ultimate##0 ~n := #in~n; 2687#L8 assume !(~n < 1); 2679#L10 assume 1 == ~n;#res := 1; 2684#fiboFINAL assume true; 2674#fiboEXIT >#35#return; 2669#L13-1 call #t~ret5 := fibo(~n - 2);< 2670#$Ultimate##0 ~n := #in~n; 2677#L8 assume ~n < 1;#res := 0; 2672#fiboFINAL assume true; 2668#fiboEXIT >#37#return; 2666#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2660#fiboFINAL assume true; 2656#fiboEXIT >#35#return; 2653#L13-1 call #t~ret5 := fibo(~n - 2);< 2652#$Ultimate##0 ~n := #in~n; 2654#L8 assume ~n < 1;#res := 0; 2672#fiboFINAL assume true; 2668#fiboEXIT >#37#return; 2622#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2630#fiboFINAL assume true; 2634#fiboEXIT >#35#return; 2625#L13-1 [2023-11-06 22:06:18,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -590837852, now seen corresponding path program 3 times [2023-11-06 22:06:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999200092] [2023-11-06 22:06:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:06:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:06:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 23 proven. 195 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:06:18,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999200092] [2023-11-06 22:06:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999200092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56870610] [2023-11-06 22:06:18,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:06:18,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:18,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:18,544 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:18,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:06:18,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:06:18,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:18,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:18,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 11 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-06 22:06:18,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-06 22:06:19,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56870610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:19,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:19,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8, 9] total 29 [2023-11-06 22:06:19,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473111349] [2023-11-06 22:06:19,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:19,060 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:06:19,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1083596768, now seen corresponding path program 3 times [2023-11-06 22:06:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765254611] [2023-11-06 22:06:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:06:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:06:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 22:06:19,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:19,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765254611] [2023-11-06 22:06:19,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765254611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137363382] [2023-11-06 22:06:19,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:06:19,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:19,186 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:19,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:06:19,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 22:06:19,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:19,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:06:19,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:06:19,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:06:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137363382] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:19,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2023-11-06 22:06:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268300717] [2023-11-06 22:06:19,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:19,576 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:06:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:06:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:06:19,577 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. cyclomatic complexity: 24 Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:19,662 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2023-11-06 22:06:19,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 123 transitions. [2023-11-06 22:06:19,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-06 22:06:19,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 123 transitions. [2023-11-06 22:06:19,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2023-11-06 22:06:19,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2023-11-06 22:06:19,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 123 transitions. [2023-11-06 22:06:19,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:19,666 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 123 transitions. [2023-11-06 22:06:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 123 transitions. [2023-11-06 22:06:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-06 22:06:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 24 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (28), 19 states have call predecessors, (28), 21 states have call successors, (28) [2023-11-06 22:06:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-11-06 22:06:19,680 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-06 22:06:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:06:19,682 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-06 22:06:19,682 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 22:06:19,682 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 121 transitions. [2023-11-06 22:06:19,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:06:19,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:06:19,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:06:19,685 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 11, 9, 9, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-06 22:06:19,685 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-06 22:06:19,686 INFO L748 eck$LassoCheckResult]: Stem: 3565#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 3566#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 3560#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3561#$Ultimate##0 ~n := #in~n; 3627#L8 assume !(~n < 1); 3626#L10 assume !(1 == ~n); 3555#L13 call #t~ret4 := fibo(~n - 1);< 3625#$Ultimate##0 ~n := #in~n; 3639#L8 assume !(~n < 1); 3638#L10 assume !(1 == ~n); 3550#L13 call #t~ret4 := fibo(~n - 1);< 3549#$Ultimate##0 ~n := #in~n; 3551#L8 assume !(~n < 1); 3641#L10 assume !(1 == ~n); 3571#L13 call #t~ret4 := fibo(~n - 1);< 3635#$Ultimate##0 ~n := #in~n; 3570#L8 assume !(~n < 1); 3572#L10 assume !(1 == ~n); 3575#L13 call #t~ret4 := fibo(~n - 1);< 3617#$Ultimate##0 ~n := #in~n; 3628#L8 assume !(~n < 1); 3623#L10 assume !(1 == ~n); 3584#L13 call #t~ret4 := fibo(~n - 1);< 3609#$Ultimate##0 ~n := #in~n; 3644#L8 assume !(~n < 1); 3643#L10 assume !(1 == ~n); 3558#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3580#L8 assume !(~n < 1); 3593#L10 assume !(1 == ~n); 3557#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3580#L8 assume !(~n < 1); 3593#L10 assume !(1 == ~n); 3557#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3580#L8 assume !(~n < 1); 3593#L10 assume !(1 == ~n); 3557#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3578#L8 assume !(~n < 1); 3573#L10 assume 1 == ~n;#res := 1; 3574#fiboFINAL assume true; 3633#fiboEXIT >#35#return; 3564#L13-1 call #t~ret5 := fibo(~n - 2);< 3576#$Ultimate##0 ~n := #in~n; 3642#L8 assume ~n < 1;#res := 0; 3640#fiboFINAL assume true; 3563#fiboEXIT >#37#return; 3556#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3559#fiboFINAL assume true; 3562#fiboEXIT >#35#return; 3582#L13-1 call #t~ret5 := fibo(~n - 2);< 3581#$Ultimate##0 ~n := #in~n; 3583#L8 assume !(~n < 1); 3603#L10 assume 1 == ~n;#res := 1; 3592#fiboFINAL assume true; 3599#fiboEXIT >#37#return; 3586#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3604#fiboFINAL assume true; 3601#fiboEXIT >#35#return; 3543#L13-1 [2023-11-06 22:06:19,686 INFO L750 eck$LassoCheckResult]: Loop: 3543#L13-1 call #t~ret5 := fibo(~n - 2);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume !(1 == ~n); 3547#L13 call #t~ret4 := fibo(~n - 1);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume !(1 == ~n); 3547#L13 call #t~ret4 := fibo(~n - 1);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume !(1 == ~n); 3547#L13 call #t~ret4 := fibo(~n - 1);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume 1 == ~n;#res := 1; 3592#fiboFINAL assume true; 3599#fiboEXIT >#35#return; 3596#L13-1 call #t~ret5 := fibo(~n - 2);< 3597#$Ultimate##0 ~n := #in~n; 3600#L8 assume ~n < 1;#res := 0; 3598#fiboFINAL assume true; 3595#fiboEXIT >#37#return; 3594#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3588#fiboFINAL assume true; 3585#fiboEXIT >#35#return; 3582#L13-1 call #t~ret5 := fibo(~n - 2);< 3581#$Ultimate##0 ~n := #in~n; 3583#L8 assume !(~n < 1); 3603#L10 assume 1 == ~n;#res := 1; 3592#fiboFINAL assume true; 3599#fiboEXIT >#37#return; 3586#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3604#fiboFINAL assume true; 3601#fiboEXIT >#35#return; 3543#L13-1 [2023-11-06 22:06:19,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash -397079941, now seen corresponding path program 4 times [2023-11-06 22:06:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717840055] [2023-11-06 22:06:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:19,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:19,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:06:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:19,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:06:19,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash -29214273, now seen corresponding path program 4 times [2023-11-06 22:06:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407737362] [2023-11-06 22:06:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:19,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:06:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:06:19,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:06:19,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1407070971, now seen corresponding path program 5 times [2023-11-06 22:06:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352390718] [2023-11-06 22:06:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:06:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:06:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:06:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:06:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:06:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:06:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 165 proven. 250 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-06 22:06:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352390718] [2023-11-06 22:06:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352390718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:06:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617866311] [2023-11-06 22:06:20,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:06:20,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:06:20,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:20,254 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:06:20,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:06:20,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-06 22:06:20,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:20,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:06:20,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 139 proven. 84 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-06 22:06:20,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 139 proven. 86 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-11-06 22:06:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617866311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:20,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10, 11] total 31 [2023-11-06 22:06:20,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863475477] [2023-11-06 22:06:20,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:21,300 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:06:21,300 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:06:21,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:06:21,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:06:21,300 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:06:21,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,300 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:06:21,301 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:06:21,301 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration7_Loop [2023-11-06 22:06:21,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:06:21,301 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:06:21,302 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 22:06:21,306 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 22:06:21,308 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 22:06:21,311 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 22:06:21,317 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 22:06:21,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:06:21,358 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:06:21,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,364 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:21,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:21,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 22:06:21,401 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:21,401 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=2} Honda state: {fibo_#t~ret4=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:21,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,412 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:21,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:21,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 22:06:21,440 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:21,440 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:21,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,449 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:21,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:21,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 22:06:21,480 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:06:21,480 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:06:21,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,490 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-06 22:06:21,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:06:21,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:21,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,542 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:06:21,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:06:21,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 22:06:21,567 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:06:21,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,570 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:06:21,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:06:21,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:06:21,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:06:21,570 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:06:21,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:06:21,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:06:21,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration7_Loop [2023-11-06 22:06:21,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:06:21,570 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:06:21,571 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 22:06:21,574 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 22:06:21,576 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 22:06:21,581 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 22:06:21,584 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 22:06:21,628 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:06:21,628 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:06:21,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,629 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,638 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 22:06:21,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:21,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:21,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:21,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:21,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:21,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:21,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:21,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-06 22:06:21,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:21,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,670 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,676 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 22:06:21,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:21,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:21,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:21,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:21,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:21,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:21,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:21,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-06 22:06:21,712 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:06:21,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,722 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,726 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 22:06:21,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:06:21,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:06:21,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:06:21,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:06:21,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:06:21,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:06:21,742 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:06:21,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-06 22:06:21,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:06:21,759 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:06:21,759 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:06:21,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:06:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:21,763 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:21,765 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:06:21,765 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:06:21,765 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:06:21,765 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-06 22:06:21,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-06 22:06:21,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:21,775 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:06:21,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:21,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:06:21,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:21,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:22,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:06:22,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:06:22,504 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 22:06:22,505 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:22,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 110 states and 128 transitions. Complement of second has 11 states. [2023-11-06 22:06:22,607 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 22:06:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2023-11-06 22:06:22,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 61 letters. Loop has 35 letters. [2023-11-06 22:06:22,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:22,609 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:06:22,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:22,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:06:22,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:06:23,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:06:23,301 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 22:06:23,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:23,411 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 110 states and 128 transitions. Complement of second has 11 states. [2023-11-06 22:06:23,411 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 22:06:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2023-11-06 22:06:23,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 61 letters. Loop has 35 letters. [2023-11-06 22:06:23,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:23,413 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 22:06:23,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:06:23,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:06:23,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:24,098 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:06:24,101 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 22:06:24,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:24,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 485 states and 609 transitions. Complement of second has 142 states. [2023-11-06 22:06:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2023-11-06 22:06:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-06 22:06:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2023-11-06 22:06:24,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 61 letters. Loop has 35 letters. [2023-11-06 22:06:24,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:24,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 96 letters. Loop has 35 letters. [2023-11-06 22:06:24,489 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:24,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 61 letters. Loop has 70 letters. [2023-11-06 22:06:24,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:06:24,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 485 states and 609 transitions. [2023-11-06 22:06:24,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-06 22:06:24,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 485 states to 345 states and 434 transitions. [2023-11-06 22:06:24,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2023-11-06 22:06:24,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 148 [2023-11-06 22:06:24,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 345 states and 434 transitions. [2023-11-06 22:06:24,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:06:24,523 INFO L218 hiAutomatonCegarLoop]: Abstraction has 345 states and 434 transitions. [2023-11-06 22:06:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states and 434 transitions. [2023-11-06 22:06:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2023-11-06 22:06:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 202 states have (on average 1.0891089108910892) internal successors, (220), 210 states have internal predecessors, (220), 75 states have call successors, (75), 44 states have call predecessors, (75), 46 states have return successors, (98), 68 states have call predecessors, (98), 67 states have call successors, (98) [2023-11-06 22:06:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 393 transitions. [2023-11-06 22:06:24,550 INFO L240 hiAutomatonCegarLoop]: Abstraction has 323 states and 393 transitions. [2023-11-06 22:06:24,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:06:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:06:24,552 INFO L87 Difference]: Start difference. First operand 323 states and 393 transitions. Second operand has 32 states, 29 states have (on average 2.0) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (21), 9 states have call predecessors, (21), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-06 22:06:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:25,440 INFO L93 Difference]: Finished difference Result 566 states and 704 transitions. [2023-11-06 22:06:25,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 566 states and 704 transitions. [2023-11-06 22:06:25,449 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:06:25,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 566 states to 0 states and 0 transitions. [2023-11-06 22:06:25,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 22:06:25,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 22:06:25,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 22:06:25,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:25,450 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:06:25,451 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:06:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-06 22:06:25,451 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:06:25,452 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 22:06:25,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:06:25,452 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 22:06:25,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 22:06:25,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:06:25 BoogieIcfgContainer [2023-11-06 22:06:25,460 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:06:25,461 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:06:25,461 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:06:25,461 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:06:25,462 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:10" (3/4) ... [2023-11-06 22:06:25,464 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:06:25,465 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:06:25,465 INFO L158 Benchmark]: Toolchain (without parser) took 15446.83ms. Allocated memory was 125.8MB in the beginning and 192.9MB in the end (delta: 67.1MB). Free memory was 96.2MB in the beginning and 70.7MB in the end (delta: 25.5MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. [2023-11-06 22:06:25,466 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 125.8MB. Free memory was 82.3MB in the beginning and 82.1MB in the end (delta: 178.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:06:25,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.72ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 86.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:06:25,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.05ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 84.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:06:25,467 INFO L158 Benchmark]: Boogie Preprocessor took 16.60ms. Allocated memory is still 125.8MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 992.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:06:25,467 INFO L158 Benchmark]: RCFGBuilder took 248.44ms. Allocated memory is still 125.8MB. Free memory was 83.3MB in the beginning and 74.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:06:25,467 INFO L158 Benchmark]: BuchiAutomizer took 14904.12ms. Allocated memory was 125.8MB in the beginning and 192.9MB in the end (delta: 67.1MB). Free memory was 74.4MB in the beginning and 71.7MB in the end (delta: 2.7MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. [2023-11-06 22:06:25,468 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 192.9MB. Free memory was 71.7MB in the beginning and 70.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:06:25,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 125.8MB. Free memory was 82.3MB in the beginning and 82.1MB in the end (delta: 178.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.72ms. Allocated memory is still 125.8MB. Free memory was 95.9MB in the beginning and 86.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.05ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 84.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.60ms. Allocated memory is still 125.8MB. Free memory was 84.6MB in the beginning and 83.6MB in the end (delta: 992.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.44ms. Allocated memory is still 125.8MB. Free memory was 83.3MB in the beginning and 74.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 14904.12ms. Allocated memory was 125.8MB in the beginning and 192.9MB in the end (delta: 67.1MB). Free memory was 74.4MB in the beginning and 71.7MB in the end (delta: 2.7MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 192.9MB. Free memory was 71.7MB in the beginning and 70.7MB in the end (delta: 1.0MB). 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 9 terminating modules (6 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. 6 modules have a trivial ranking function, the largest among these consists of 32 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.8s and 8 iterations. TraceHistogramMax:12. Analysis of lassos took 9.0s. Construction of modules took 1.1s. Büchi inclusion checks took 4.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 8. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 32/70 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 476 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 455 mSDsluCounter, 564 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1436 IncrementalHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 357 mSolverCounterUnsat, 163 mSDtfsCounter, 1436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf90 smp88 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s 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 22:06:25,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:25,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:25,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:26,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-06 22:06:26,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-06 22:06:26,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:26,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:26,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:27,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16673a0-e73f-4c47-b4e9-8c3ec331d606/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