./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30e01a73 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_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:35:34,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:35:34,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-23 22:35:34,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:35:34,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:35:34,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:35:34,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:35:34,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:35:34,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:35:34,400 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:35:34,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:35:34,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:35:34,402 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:35:34,404 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-23 22:35:34,404 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-23 22:35:34,405 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-23 22:35:34,405 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-23 22:35:34,406 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-23 22:35:34,406 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-23 22:35:34,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:35:34,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-23 22:35:34,408 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:35:34,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:35:34,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:35:34,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:35:34,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-23 22:35:34,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-23 22:35:34,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-23 22:35:34,411 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:35:34,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:35:34,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:35:34,413 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-23 22:35:34,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:35:34,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:35:34,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:35:34,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:35:34,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:35:34,415 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-23 22:35:34,415 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_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2023-11-23 22:35:34,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:35:34,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:35:34,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:35:34,748 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:35:34,749 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:35:34,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-23 22:35:37,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:35:38,112 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:35:38,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-23 22:35:38,121 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/data/113fb22fb/6a57dfded7c14f7f827558dcb8f9b1ad/FLAG335657bad [2023-11-23 22:35:38,137 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/data/113fb22fb/6a57dfded7c14f7f827558dcb8f9b1ad [2023-11-23 22:35:38,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:35:38,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:35:38,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:38,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:35:38,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:35:38,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5612d02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38, skipping insertion in model container [2023-11-23 22:35:38,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:35:38,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:38,346 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:35:38,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:38,373 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:35:38,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38 WrapperNode [2023-11-23 22:35:38,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:38,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:35:38,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:35:38,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:35:38,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,404 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-23 22:35:38,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:35:38,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:35:38,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:35:38,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:35:38,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,416 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,424 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:35:38,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:35:38,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:35:38,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:35:38,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:35:38,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (1/1) ... [2023-11-23 22:35:38,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:38,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:38,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-23 22:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-23 22:35:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-23 22:35:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-23 22:35:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-23 22:35:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:35:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:35:38,570 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:35:38,573 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:35:38,712 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:35:38,723 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:35:38,723 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:35:38,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:38 BoogieIcfgContainer [2023-11-23 22:35:38,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:35:38,726 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-23 22:35:38,726 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-23 22:35:38,731 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-23 22:35:38,732 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:35:38,732 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 10:35:38" (1/3) ... [2023-11-23 22:35:38,733 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f7cec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:35:38, skipping insertion in model container [2023-11-23 22:35:38,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:35:38,733 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:38" (2/3) ... [2023-11-23 22:35:38,734 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f7cec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:35:38, skipping insertion in model container [2023-11-23 22:35:38,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:35:38,734 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:38" (3/3) ... [2023-11-23 22:35:38,736 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_6-2.c [2023-11-23 22:35:38,794 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-23 22:35:38,794 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-23 22:35:38,795 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-23 22:35:38,795 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-23 22:35:38,795 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-23 22:35:38,795 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-23 22:35:38,795 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-23 22:35:38,796 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-23 22:35:38,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:35:38,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 22:35:38,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:38,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:38,829 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 22:35:38,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:38,830 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-23 22:35:38,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:35:38,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 22:35:38,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:38,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:38,834 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-23 22:35:38,834 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:38,841 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-23 22:35:38,841 INFO L750 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2023-11-23 22:35:38,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-23 22:35:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:38,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858413214] [2023-11-23 22:35:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:38,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:38,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:38,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:38,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-23 22:35:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257732092] [2023-11-23 22:35:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:38,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:38,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-23 22:35:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:38,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217667061] [2023-11-23 22:35:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:38,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:39,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:39,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:39,368 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:39,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:39,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:39,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:39,369 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:35:39,370 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:39,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:39,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration1_Loop [2023-11-23 22:35:39,371 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:39,371 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:39,389 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,402 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,405 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,408 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,412 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,417 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:39,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:39,502 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:35:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-23 22:35:39,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,550 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-23 22:35:39,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-23 22:35:39,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,603 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-23 22:35:39,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,646 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,646 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:39,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-23 22:35:39,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,680 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:39,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-23 22:35:39,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:39,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-23 22:35:39,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-23 22:35:39,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:39,862 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:39,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:39,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-23 22:35:39,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:39,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:39,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-23 22:35:39,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:39,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:39,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-23 22:35:39,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:35:39,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:40,012 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:35:40,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,016 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:40,016 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:40,016 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:40,016 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:40,016 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:35:40,016 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:40,017 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:40,017 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration1_Loop [2023-11-23 22:35:40,017 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:40,017 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:40,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,034 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,055 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:40,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:40,133 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:35:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,153 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 [2023-11-23 22:35:40,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:40,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:40,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:40,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:40,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:40,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:40,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:40,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-23 22:35:40,191 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:40,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,218 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,221 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 [2023-11-23 22:35:40,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:40,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:40,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:40,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:40,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:40,237 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:40,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:40,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-23 22:35:40,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:40,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,288 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 [2023-11-23 22:35:40,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:40,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:40,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:40,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:40,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:40,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:40,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:40,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-23 22:35:40,313 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:40,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,338 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-23 22:35:40,342 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 [2023-11-23 22:35:40,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:40,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:40,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:40,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:40,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:40,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:40,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:40,365 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:40,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,378 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-23 22:35:40,381 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 [2023-11-23 22:35:40,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:40,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:40,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:40,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:40,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:40,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:40,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:40,418 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:40,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,448 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 [2023-11-23 22:35:40,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-23 22:35:40,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:40,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:40,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:40,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:40,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:40,460 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:40,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:40,472 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:35:40,476 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:35:40,476 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:35:40,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:40,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:40,512 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:40,515 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:35:40,515 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:35:40,516 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:35:40,516 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-23 22:35:40,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-23 22:35:40,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:40,538 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:35:40,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:40,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:35:40,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:40,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:35:40,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:40,808 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-23 22:35:40,811 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:35:41,003 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 85 states and 117 transitions. Complement of second has 24 states. [2023-11-23 22:35:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:35:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-23 22:35:41,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-23 22:35:41,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:41,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-23 22:35:41,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:41,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-23 22:35:41,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:41,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-23 22:35:41,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 22:35:41,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-23 22:35:41,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-23 22:35:41,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-23 22:35:41,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-23 22:35:41,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:41,038 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-23 22:35:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-23 22:35:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-23 22:35:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-23 22:35:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-23 22:35:41,075 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-23 22:35:41,075 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-23 22:35:41,076 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-23 22:35:41,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-23 22:35:41,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 22:35:41,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:41,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:41,079 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:41,080 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:41,080 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-23 22:35:41,080 INFO L750 eck$LassoCheckResult]: Loop: 211#L25-1 call #t~ret7 := fibo1(~n - 2);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume !(~n < 1); 243#L12 assume !(1 == ~n); 212#L15 call #t~ret4 := fibo2(~n - 1);< 225#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 224#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#48#return; 211#L25-1 [2023-11-23 22:35:41,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-23 22:35:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739219895] [2023-11-23 22:35:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:35:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:35:41,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:41,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739219895] [2023-11-23 22:35:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739219895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:41,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:41,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:35:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302524210] [2023-11-23 22:35:41,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:41,337 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:41,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-23 22:35:41,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736219826] [2023-11-23 22:35:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 22:35:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:35:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736219826] [2023-11-23 22:35:41,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736219826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:41,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:41,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:35:41,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119873684] [2023-11-23 22:35:41,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:41,492 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 22:35:41,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:35:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:35:41,497 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:35:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:41,598 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-23 22:35:41,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-23 22:35:41,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 22:35:41,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-23 22:35:41,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-23 22:35:41,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-23 22:35:41,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-23 22:35:41,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:41,620 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-23 22:35:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-23 22:35:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-23 22:35:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-23 22:35:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-23 22:35:41,636 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-23 22:35:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:35:41,639 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-23 22:35:41,639 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-23 22:35:41,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-23 22:35:41,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-23 22:35:41,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:41,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:41,644 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:41,644 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:41,645 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-23 22:35:41,645 INFO L750 eck$LassoCheckResult]: Loop: 355#L25-1 call #t~ret7 := fibo1(~n - 2);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume !(1 == ~n); 361#L15 call #t~ret4 := fibo2(~n - 1);< 392#$Ultimate##0 ~n := #in~n; 391#L20 assume !(~n < 1); 389#L22 assume !(1 == ~n); 356#L25 call #t~ret6 := fibo1(~n - 1);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 384#fibo1FINAL assume true; 385#fibo1EXIT >#48#return; 355#L25-1 [2023-11-23 22:35:41,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-23 22:35:41,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356927298] [2023-11-23 22:35:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:35:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356927298] [2023-11-23 22:35:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356927298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020984906] [2023-11-23 22:35:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:41,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:41,789 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:41,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 22:35:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:41,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:35:41,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:41,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020984906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:42,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-23 22:35:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201566134] [2023-11-23 22:35:42,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:42,095 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:42,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:42,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-23 22:35:42,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:42,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034539113] [2023-11-23 22:35:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:42,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:42,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:42,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:42,307 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:42,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:42,308 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:42,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:42,308 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:35:42,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:42,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:42,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration3_Loop [2023-11-23 22:35:42,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:42,309 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:42,310 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,313 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,322 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,326 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,403 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:42,403 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:35:42,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,407 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:42,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-23 22:35:42,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:42,443 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:42,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,464 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-23 22:35:42,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:42,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:42,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:42,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,502 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-23 22:35:42,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:42,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,517 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:42,517 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:42,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,533 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:42,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-23 22:35:42,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:42,550 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:42,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,565 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-23 22:35:42,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:42,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:42,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:42,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,605 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-23 22:35:42,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:42,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-23 22:35:42,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,632 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-23 22:35:42,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:35:42,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:42,650 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:35:42,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-23 22:35:42,665 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:42,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:42,665 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:42,665 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:42,665 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:35:42,665 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,665 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:42,665 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:42,665 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration3_Loop [2023-11-23 22:35:42,665 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:42,665 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:42,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,683 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,685 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:42,759 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:42,760 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:35:42,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,761 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-23 22:35:42,766 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 [2023-11-23 22:35:42,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:42,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:42,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:42,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:42,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:42,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:42,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:42,794 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:42,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,815 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,819 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 [2023-11-23 22:35:42,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:42,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:42,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:42,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:42,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:42,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:42,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:42,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-23 22:35:42,844 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:42,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,865 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,867 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 [2023-11-23 22:35:42,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:42,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:42,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:42,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:42,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:42,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:42,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-23 22:35:42,910 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:42,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,930 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,936 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 [2023-11-23 22:35:42,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:42,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:42,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:42,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:42,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:42,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:42,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:42,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-23 22:35:42,970 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:42,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:42,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:42,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:42,991 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:42,997 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 [2023-11-23 22:35:43,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:43,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:43,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:43,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:43,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:43,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:43,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:43,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-23 22:35:43,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:35:43,038 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:35:43,039 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:35:43,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:43,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:43,041 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:43,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:35:43,043 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:35:43,043 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:35:43,043 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-23 22:35:43,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-23 22:35:43,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:43,067 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:35:43,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:43,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:35:43,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:43,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-23 22:35:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:43,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 22:35:43,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:43,442 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 [2023-11-23 22:35:43,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:35:44,000 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2023-11-23 22:35:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:35:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-23 22:35:44,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-23 22:35:44,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:44,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-23 22:35:44,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:44,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-23 22:35:44,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:44,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-23 22:35:44,027 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-23 22:35:44,040 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-23 22:35:44,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-23 22:35:44,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-23 22:35:44,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-23 22:35:44,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:44,048 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-23 22:35:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-23 22:35:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-23 22:35:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-23 22:35:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-23 22:35:44,082 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-23 22:35:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:35:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:35:44,085 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:35:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:44,404 INFO L93 Difference]: Finished difference Result 209 states and 276 transitions. [2023-11-23 22:35:44,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 209 states and 276 transitions. [2023-11-23 22:35:44,410 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-23 22:35:44,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 209 states to 200 states and 267 transitions. [2023-11-23 22:35:44,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2023-11-23 22:35:44,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2023-11-23 22:35:44,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 267 transitions. [2023-11-23 22:35:44,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:44,421 INFO L218 hiAutomatonCegarLoop]: Abstraction has 200 states and 267 transitions. [2023-11-23 22:35:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 267 transitions. [2023-11-23 22:35:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 185. [2023-11-23 22:35:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 124 states have internal predecessors, (142), 43 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (62), 37 states have call predecessors, (62), 41 states have call successors, (62) [2023-11-23 22:35:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2023-11-23 22:35:44,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-23 22:35:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 22:35:44,449 INFO L428 stractBuchiCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-23 22:35:44,449 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-23 22:35:44,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 249 transitions. [2023-11-23 22:35:44,451 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-23 22:35:44,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:44,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:44,453 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:44,453 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:44,453 INFO L748 eck$LassoCheckResult]: Stem: 1299#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1302#$Ultimate##0 ~n := #in~n; 1342#L10 assume !(~n < 1); 1341#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1340#$Ultimate##0 ~n := #in~n; 1339#L20 assume !(~n < 1); 1240#L22 assume !(1 == ~n); 1242#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1288#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1294#$Ultimate##0 ~n := #in~n; 1296#L20 assume !(~n < 1); 1297#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1333#$Ultimate##0 ~n := #in~n; 1334#L10 assume !(~n < 1); 1344#L12 assume !(1 == ~n); 1345#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1357#L20 assume ~n < 1;#res := 0; 1356#fibo2FINAL assume true; 1352#fibo2EXIT >#52#return; 1349#L15-1 call #t~ret5 := fibo2(~n - 2);< 1350#$Ultimate##0 ~n := #in~n; 1354#L20 assume ~n < 1;#res := 0; 1351#fibo2FINAL assume true; 1348#fibo2EXIT >#54#return; 1346#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1347#fibo1FINAL assume true; 1414#fibo1EXIT >#48#return; 1267#L25-1 call #t~ret7 := fibo1(~n - 2);< 1332#$Ultimate##0 ~n := #in~n; 1371#L10 assume ~n < 1;#res := 0; 1420#fibo1FINAL assume true; 1265#fibo1EXIT >#50#return; 1269#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1280#fibo2FINAL assume true; 1289#fibo2EXIT >#52#return; 1298#L15-1 call #t~ret5 := fibo2(~n - 2);< 1362#$Ultimate##0 [2023-11-23 22:35:44,453 INFO L750 eck$LassoCheckResult]: Loop: 1362#$Ultimate##0 ~n := #in~n; 1417#L20 assume !(~n < 1); 1415#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1260#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1293#L12 assume !(1 == ~n); 1361#L15 call #t~ret4 := fibo2(~n - 1);< 1362#$Ultimate##0 [2023-11-23 22:35:44,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:44,454 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-23 22:35:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409906009] [2023-11-23 22:35:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 22:35:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 22:35:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 22:35:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 22:35:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409906009] [2023-11-23 22:35:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409906009] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508963795] [2023-11-23 22:35:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:44,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:44,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:44,645 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:44,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-23 22:35:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:35:44,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:35:44,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:35:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508963795] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:45,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:45,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 20 [2023-11-23 22:35:45,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233492089] [2023-11-23 22:35:45,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:45,380 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:45,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-23 22:35:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945496645] [2023-11-23 22:35:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:45,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:45,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:45,511 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:45,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:45,511 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:45,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:45,512 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:35:45,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:45,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:45,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration4_Loop [2023-11-23 22:35:45,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:45,512 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:45,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,520 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,522 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,527 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,584 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:45,584 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:35:45,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,585 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-23 22:35:45,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,607 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:45,607 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:45,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:45,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,620 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-23 22:35:45,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:45,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:45,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:45,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,680 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-23 22:35:45,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:45,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:45,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:45,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,731 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-23 22:35:45,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,756 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:45,756 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:45,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:45,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,770 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-23 22:35:45,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,797 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:45,797 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:45,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-23 22:35:45,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,811 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-23 22:35:45,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:45,824 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:45,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-23 22:35:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,838 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-23 22:35:45,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:45,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:45,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:45,880 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-23 22:35:45,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:35:45,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:45,984 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:35:45,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-23 22:35:45,989 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:45,989 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:45,989 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:45,989 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:45,989 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:35:45,989 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:45,989 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:45,989 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:45,989 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration4_Loop [2023-11-23 22:35:45,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:45,989 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:45,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,996 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:45,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:46,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:46,003 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:46,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:46,007 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:46,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:46,072 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:46,072 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:35:46,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,073 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,084 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 [2023-11-23 22:35:46,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-23 22:35:46,108 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:46,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:46,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,133 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,139 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 [2023-11-23 22:35:46,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-23 22:35:46,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:46,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:46,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,192 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,194 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 [2023-11-23 22:35:46,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,208 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-23 22:35:46,222 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:46,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:46,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,248 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,250 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 [2023-11-23 22:35:46,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-23 22:35:46,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,266 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:46,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,282 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-23 22:35:46,283 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 [2023-11-23 22:35:46,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,305 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:46,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-23 22:35:46,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,327 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-23 22:35:46,329 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 [2023-11-23 22:35:46,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,366 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:46,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:46,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,387 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,389 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 [2023-11-23 22:35:46,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:46,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:46,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:46,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:46,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:46,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:46,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:46,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-23 22:35:46,422 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:35:46,426 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:35:46,426 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:35:46,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:46,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:46,429 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:46,430 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:35:46,430 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:35:46,431 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:35:46,431 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-23 22:35:46,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-23 22:35:46,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:46,452 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:35:46,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:46,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:35:46,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:46,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:35:46,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:46,999 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-23 22:35:47,000 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:47,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:47,244 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 691 states and 965 transitions. Complement of second has 26 states. [2023-11-23 22:35:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-23 22:35:47,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-23 22:35:47,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:47,250 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:35:47,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:47,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:35:47,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:47,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 22:35:47,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:47,766 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-23 22:35:47,767 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:48,008 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 721 states and 995 transitions. Complement of second has 30 states. [2023-11-23 22:35:48,009 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 [2023-11-23 22:35:48,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 40 transitions. [2023-11-23 22:35:48,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-23 22:35:48,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:48,012 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:35:48,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:48,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:35:48,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:48,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:35:48,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:48,528 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-23 22:35:48,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:48,720 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 576 states and 790 transitions. Complement of second has 25 states. [2023-11-23 22:35:48,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-23 22:35:48,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-23 22:35:48,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:48,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-23 22:35:48,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:48,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-23 22:35:48,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:48,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 576 states and 790 transitions. [2023-11-23 22:35:48,741 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-23 22:35:48,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 576 states to 465 states and 663 transitions. [2023-11-23 22:35:48,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 204 [2023-11-23 22:35:48,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 235 [2023-11-23 22:35:48,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 465 states and 663 transitions. [2023-11-23 22:35:48,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:48,755 INFO L218 hiAutomatonCegarLoop]: Abstraction has 465 states and 663 transitions. [2023-11-23 22:35:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states and 663 transitions. [2023-11-23 22:35:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 390. [2023-11-23 22:35:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 282 states have internal predecessors, (329), 76 states have call successors, (79), 58 states have call predecessors, (79), 55 states have return successors, (123), 49 states have call predecessors, (123), 74 states have call successors, (123) [2023-11-23 22:35:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 531 transitions. [2023-11-23 22:35:48,809 INFO L240 hiAutomatonCegarLoop]: Abstraction has 390 states and 531 transitions. [2023-11-23 22:35:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 22:35:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:35:48,810 INFO L87 Difference]: Start difference. First operand 390 states and 531 transitions. Second operand has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 13 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-23 22:35:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:49,270 INFO L93 Difference]: Finished difference Result 469 states and 660 transitions. [2023-11-23 22:35:49,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 660 transitions. [2023-11-23 22:35:49,278 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-23 22:35:49,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 430 states and 616 transitions. [2023-11-23 22:35:49,287 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 237 [2023-11-23 22:35:49,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 238 [2023-11-23 22:35:49,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 616 transitions. [2023-11-23 22:35:49,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:49,291 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 616 transitions. [2023-11-23 22:35:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 616 transitions. [2023-11-23 22:35:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 381. [2023-11-23 22:35:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 247 states have (on average 1.2267206477732793) internal successors, (303), 276 states have internal predecessors, (303), 79 states have call successors, (82), 53 states have call predecessors, (82), 55 states have return successors, (138), 51 states have call predecessors, (138), 77 states have call successors, (138) [2023-11-23 22:35:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 523 transitions. [2023-11-23 22:35:49,313 INFO L240 hiAutomatonCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-23 22:35:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 22:35:49,316 INFO L428 stractBuchiCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-23 22:35:49,317 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-23 22:35:49,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 381 states and 523 transitions. [2023-11-23 22:35:49,325 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-23 22:35:49,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:49,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:49,332 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:49,332 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-23 22:35:49,332 INFO L748 eck$LassoCheckResult]: Stem: 5317#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5274#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 5275#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5324#$Ultimate##0 ~n := #in~n; 5375#L10 assume !(~n < 1); 5374#L12 assume !(1 == ~n); 5370#L15 call #t~ret4 := fibo2(~n - 1);< 5373#$Ultimate##0 ~n := #in~n; 5372#L20 assume !(~n < 1); 5371#L22 assume !(1 == ~n); 5366#L25 call #t~ret6 := fibo1(~n - 1);< 5369#$Ultimate##0 ~n := #in~n; 5368#L10 assume !(~n < 1); 5367#L12 assume !(1 == ~n); 5352#L15 call #t~ret4 := fibo2(~n - 1);< 5364#$Ultimate##0 ~n := #in~n; 5363#L20 assume !(~n < 1); 5360#L22 assume !(1 == ~n); 5295#L25 call #t~ret6 := fibo1(~n - 1);< 5353#$Ultimate##0 ~n := #in~n; 5361#L10 assume !(~n < 1); 5463#L12 assume !(1 == ~n); 5445#L15 call #t~ret4 := fibo2(~n - 1);< 5461#$Ultimate##0 ~n := #in~n; 5466#L20 assume !(~n < 1); 5465#L22 assume 1 == ~n;#res := 1; 5462#fibo2FINAL assume true; 5460#fibo2EXIT >#52#return; 5458#L15-1 call #t~ret5 := fibo2(~n - 2);< 5459#$Ultimate##0 ~n := #in~n; 5472#L20 assume ~n < 1;#res := 0; 5469#fibo2FINAL assume true; 5457#fibo2EXIT >#54#return; 5456#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5455#fibo1FINAL assume true; 5454#fibo1EXIT >#48#return; 5296#L25-1 call #t~ret7 := fibo1(~n - 2);< 5451#$Ultimate##0 ~n := #in~n; 5518#L10 assume ~n < 1;#res := 0; 5516#fibo1FINAL assume true; 5507#fibo1EXIT >#50#return; 5481#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5505#fibo2FINAL assume true; 5504#fibo2EXIT >#52#return; 5313#L15-1 call #t~ret5 := fibo2(~n - 2);< 5300#$Ultimate##0 [2023-11-23 22:35:49,333 INFO L750 eck$LassoCheckResult]: Loop: 5300#$Ultimate##0 ~n := #in~n; 5250#L20 assume !(~n < 1); 5315#L22 assume !(1 == ~n); 5267#L25 call #t~ret6 := fibo1(~n - 1);< 5484#$Ultimate##0 ~n := #in~n; 5550#L10 assume !(~n < 1); 5548#L12 assume !(1 == ~n); 5248#L15 call #t~ret4 := fibo2(~n - 1);< 5246#$Ultimate##0 ~n := #in~n; 5250#L20 assume !(~n < 1); 5315#L22 assume !(1 == ~n); 5267#L25 call #t~ret6 := fibo1(~n - 1);< 5484#$Ultimate##0 ~n := #in~n; 5550#L10 assume !(~n < 1); 5548#L12 assume !(1 == ~n); 5248#L15 call #t~ret4 := fibo2(~n - 1);< 5246#$Ultimate##0 ~n := #in~n; 5249#L20 assume !(~n < 1); 5527#L22 assume 1 == ~n;#res := 1; 5526#fibo2FINAL assume true; 5523#fibo2EXIT >#52#return; 5289#L15-1 call #t~ret5 := fibo2(~n - 2);< 5300#$Ultimate##0 ~n := #in~n; 5531#L20 assume ~n < 1;#res := 0; 5532#fibo2FINAL assume true; 5547#fibo2EXIT >#54#return; 5500#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5483#fibo1FINAL assume true; 5479#fibo1EXIT >#48#return; 5293#L25-1 call #t~ret7 := fibo1(~n - 2);< 5482#$Ultimate##0 ~n := #in~n; 5517#L10 assume !(~n < 1); 5509#L12 assume !(1 == ~n); 5485#L15 call #t~ret4 := fibo2(~n - 1);< 5493#$Ultimate##0 ~n := #in~n; 5492#L20 assume !(~n < 1); 5490#L22 assume !(1 == ~n); 5291#L25 call #t~ret6 := fibo1(~n - 1);< 5482#$Ultimate##0 ~n := #in~n; 5517#L10 assume !(~n < 1); 5509#L12 assume !(1 == ~n); 5485#L15 call #t~ret4 := fibo2(~n - 1);< 5493#$Ultimate##0 ~n := #in~n; 5492#L20 assume !(~n < 1); 5490#L22 assume 1 == ~n;#res := 1; 5491#fibo2FINAL assume true; 5522#fibo2EXIT >#52#return; 5289#L15-1 call #t~ret5 := fibo2(~n - 2);< 5300#$Ultimate##0 ~n := #in~n; 5531#L20 assume ~n < 1;#res := 0; 5532#fibo2FINAL assume true; 5547#fibo2EXIT >#54#return; 5500#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5483#fibo1FINAL assume true; 5479#fibo1EXIT >#48#return; 5293#L25-1 call #t~ret7 := fibo1(~n - 2);< 5482#$Ultimate##0 ~n := #in~n; 5517#L10 assume ~n < 1;#res := 0; 5513#fibo1FINAL assume true; 5506#fibo1EXIT >#50#return; 5480#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5533#fibo2FINAL assume true; 5521#fibo2EXIT >#52#return; 5289#L15-1 call #t~ret5 := fibo2(~n - 2);< 5300#$Ultimate##0 ~n := #in~n; 5531#L20 assume ~n < 1;#res := 0; 5532#fibo2FINAL assume true; 5547#fibo2EXIT >#54#return; 5500#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5483#fibo1FINAL assume true; 5479#fibo1EXIT >#50#return; 5480#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5533#fibo2FINAL assume true; 5521#fibo2EXIT >#52#return; 5289#L15-1 call #t~ret5 := fibo2(~n - 2);< 5300#$Ultimate##0 [2023-11-23 22:35:49,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1560322136, now seen corresponding path program 1 times [2023-11-23 22:35:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:49,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590443016] [2023-11-23 22:35:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 22:35:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:35:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 22:35:49,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:49,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590443016] [2023-11-23 22:35:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590443016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:49,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680400436] [2023-11-23 22:35:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:49,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:49,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:49,707 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:49,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-23 22:35:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:49,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 22:35:49,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 22:35:49,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 22:35:50,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680400436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:50,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:50,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2023-11-23 22:35:50,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096795383] [2023-11-23 22:35:50,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:50,118 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:50,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-23 22:35:50,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796875087] [2023-11-23 22:35:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:35:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:35:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:35:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:35:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 22:35:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:50,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796875087] [2023-11-23 22:35:50,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796875087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:50,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288793465] [2023-11-23 22:35:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:50,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:50,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:50,436 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:50,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-23 22:35:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:50,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 22:35:50,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 22:35:50,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 22:35:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288793465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:51,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:51,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-23 22:35:51,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050675869] [2023-11-23 22:35:51,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:51,171 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 22:35:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:51,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 22:35:51,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:35:51,172 INFO L87 Difference]: Start difference. First operand 381 states and 523 transitions. cyclomatic complexity: 149 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 10 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 22:35:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:51,498 INFO L93 Difference]: Finished difference Result 412 states and 577 transitions. [2023-11-23 22:35:51,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 412 states and 577 transitions. [2023-11-23 22:35:51,504 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-23 22:35:51,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 412 states to 412 states and 577 transitions. [2023-11-23 22:35:51,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2023-11-23 22:35:51,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2023-11-23 22:35:51,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 412 states and 577 transitions. [2023-11-23 22:35:51,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:51,512 INFO L218 hiAutomatonCegarLoop]: Abstraction has 412 states and 577 transitions. [2023-11-23 22:35:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states and 577 transitions. [2023-11-23 22:35:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 394. [2023-11-23 22:35:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 255 states have (on average 1.219607843137255) internal successors, (311), 286 states have internal predecessors, (311), 80 states have call successors, (83), 54 states have call predecessors, (83), 59 states have return successors, (145), 53 states have call predecessors, (145), 78 states have call successors, (145) [2023-11-23 22:35:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 539 transitions. [2023-11-23 22:35:51,531 INFO L240 hiAutomatonCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-23 22:35:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 22:35:51,532 INFO L428 stractBuchiCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-23 22:35:51,532 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-23 22:35:51,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 394 states and 539 transitions. [2023-11-23 22:35:51,536 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-23 22:35:51,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:51,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:51,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:51,539 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-23 22:35:51,539 INFO L748 eck$LassoCheckResult]: Stem: 7109#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7073#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 7074#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7112#$Ultimate##0 ~n := #in~n; 7180#L10 assume !(~n < 1); 7179#L12 assume !(1 == ~n); 7175#L15 call #t~ret4 := fibo2(~n - 1);< 7178#$Ultimate##0 ~n := #in~n; 7177#L20 assume !(~n < 1); 7176#L22 assume !(1 == ~n); 7171#L25 call #t~ret6 := fibo1(~n - 1);< 7174#$Ultimate##0 ~n := #in~n; 7173#L10 assume !(~n < 1); 7172#L12 assume !(1 == ~n); 7159#L15 call #t~ret4 := fibo2(~n - 1);< 7169#$Ultimate##0 ~n := #in~n; 7168#L20 assume !(~n < 1); 7164#L22 assume !(1 == ~n); 7086#L25 call #t~ret6 := fibo1(~n - 1);< 7160#$Ultimate##0 ~n := #in~n; 7141#L10 assume !(~n < 1); 7142#L12 assume !(1 == ~n); 7132#L15 call #t~ret4 := fibo2(~n - 1);< 7133#$Ultimate##0 ~n := #in~n; 7157#L20 assume !(~n < 1); 7158#L22 assume !(1 == ~n); 7088#L25 call #t~ret6 := fibo1(~n - 1);< 7160#$Ultimate##0 ~n := #in~n; 7166#L10 assume !(~n < 1); 7290#L12 assume 1 == ~n;#res := 1; 7288#fibo1FINAL assume true; 7286#fibo1EXIT >#48#return; 7235#L25-1 call #t~ret7 := fibo1(~n - 2);< 7252#$Ultimate##0 ~n := #in~n; 7354#L10 assume ~n < 1;#res := 0; 7355#fibo1FINAL assume true; 7402#fibo1EXIT >#50#return; 7315#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7383#fibo2FINAL assume true; 7299#fibo2EXIT >#52#return; 7276#L15-1 [2023-11-23 22:35:51,539 INFO L750 eck$LassoCheckResult]: Loop: 7276#L15-1 call #t~ret5 := fibo2(~n - 2);< 7298#$Ultimate##0 ~n := #in~n; 7365#L20 assume !(~n < 1); 7372#L22 assume !(1 == ~n); 7266#L25 call #t~ret6 := fibo1(~n - 1);< 7280#$Ultimate##0 ~n := #in~n; 7353#L10 assume !(~n < 1); 7350#L12 assume !(1 == ~n); 7278#L15 call #t~ret4 := fibo2(~n - 1);< 7305#$Ultimate##0 ~n := #in~n; 7365#L20 assume !(~n < 1); 7372#L22 assume !(1 == ~n); 7266#L25 call #t~ret6 := fibo1(~n - 1);< 7280#$Ultimate##0 ~n := #in~n; 7353#L10 assume !(~n < 1); 7350#L12 assume !(1 == ~n); 7278#L15 call #t~ret4 := fibo2(~n - 1);< 7305#$Ultimate##0 ~n := #in~n; 7363#L20 assume !(~n < 1); 7360#L22 assume 1 == ~n;#res := 1; 7357#fibo2FINAL assume true; 7308#fibo2EXIT >#52#return; 7276#L15-1 call #t~ret5 := fibo2(~n - 2);< 7298#$Ultimate##0 ~n := #in~n; 7311#L20 assume ~n < 1;#res := 0; 7306#fibo2FINAL assume true; 7301#fibo2EXIT >#54#return; 7295#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7274#fibo1FINAL assume true; 7265#fibo1EXIT >#48#return; 7268#L25-1 call #t~ret7 := fibo1(~n - 2);< 7283#$Ultimate##0 ~n := #in~n; 7366#L10 assume !(~n < 1); 7367#L12 assume !(1 == ~n); 7281#L15 call #t~ret4 := fibo2(~n - 1);< 7289#$Ultimate##0 ~n := #in~n; 7287#L20 assume !(~n < 1); 7284#L22 assume !(1 == ~n); 7270#L25 call #t~ret6 := fibo1(~n - 1);< 7283#$Ultimate##0 ~n := #in~n; 7366#L10 assume !(~n < 1); 7367#L12 assume !(1 == ~n); 7281#L15 call #t~ret4 := fibo2(~n - 1);< 7289#$Ultimate##0 ~n := #in~n; 7287#L20 assume !(~n < 1); 7284#L22 assume 1 == ~n;#res := 1; 7285#fibo2FINAL assume true; 7309#fibo2EXIT >#52#return; 7276#L15-1 call #t~ret5 := fibo2(~n - 2);< 7298#$Ultimate##0 ~n := #in~n; 7311#L20 assume ~n < 1;#res := 0; 7306#fibo2FINAL assume true; 7301#fibo2EXIT >#54#return; 7295#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7274#fibo1FINAL assume true; 7265#fibo1EXIT >#48#return; 7268#L25-1 call #t~ret7 := fibo1(~n - 2);< 7283#$Ultimate##0 ~n := #in~n; 7366#L10 assume !(~n < 1); 7367#L12 assume 1 == ~n;#res := 1; 7335#fibo1FINAL assume true; 7316#fibo1EXIT >#50#return; 7272#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7303#fibo2FINAL assume true; 7300#fibo2EXIT >#52#return; 7276#L15-1 call #t~ret5 := fibo2(~n - 2);< 7298#$Ultimate##0 ~n := #in~n; 7311#L20 assume ~n < 1;#res := 0; 7306#fibo2FINAL assume true; 7301#fibo2EXIT >#54#return; 7295#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7274#fibo1FINAL assume true; 7265#fibo1EXIT >#50#return; 7272#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7303#fibo2FINAL assume true; 7300#fibo2EXIT >#52#return; 7276#L15-1 [2023-11-23 22:35:51,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1100171425, now seen corresponding path program 1 times [2023-11-23 22:35:51,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:51,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622358785] [2023-11-23 22:35:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 22:35:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:51,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:35:51,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:51,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622358785] [2023-11-23 22:35:51,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622358785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:51,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897980726] [2023-11-23 22:35:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:51,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:51,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:51,798 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-23 22:35:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:51,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:35:51,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:35:51,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:35:52,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897980726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:52,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 21 [2023-11-23 22:35:52,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050491543] [2023-11-23 22:35:52,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:52,242 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:52,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:52,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2083907171, now seen corresponding path program 1 times [2023-11-23 22:35:52,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:52,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970428625] [2023-11-23 22:35:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:52,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 22:35:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:35:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:35:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 22:35:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 22:35:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970428625] [2023-11-23 22:35:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970428625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686571574] [2023-11-23 22:35:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:52,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:52,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:52,563 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:52,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-23 22:35:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:52,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 22:35:52,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 22:35:52,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 22:35:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686571574] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:53,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:53,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-23 22:35:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945602002] [2023-11-23 22:35:53,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:53,242 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 22:35:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 22:35:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-23 22:35:53,243 INFO L87 Difference]: Start difference. First operand 394 states and 539 transitions. cyclomatic complexity: 152 Second operand has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 22:35:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:53,758 INFO L93 Difference]: Finished difference Result 445 states and 553 transitions. [2023-11-23 22:35:53,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 445 states and 553 transitions. [2023-11-23 22:35:53,766 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2023-11-23 22:35:53,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 445 states to 299 states and 359 transitions. [2023-11-23 22:35:53,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2023-11-23 22:35:53,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 162 [2023-11-23 22:35:53,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 359 transitions. [2023-11-23 22:35:53,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:53,772 INFO L218 hiAutomatonCegarLoop]: Abstraction has 299 states and 359 transitions. [2023-11-23 22:35:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 359 transitions. [2023-11-23 22:35:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2023-11-23 22:35:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 199 states have internal predecessors, (211), 59 states have call successors, (60), 42 states have call predecessors, (60), 37 states have return successors, (61), 35 states have call predecessors, (61), 44 states have call successors, (61) [2023-11-23 22:35:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2023-11-23 22:35:53,784 INFO L240 hiAutomatonCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-23 22:35:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 22:35:53,785 INFO L428 stractBuchiCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-23 22:35:53,785 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-23 22:35:53,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 332 transitions. [2023-11-23 22:35:53,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 62 [2023-11-23 22:35:53,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:53,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:53,789 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:53,790 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:53,790 INFO L748 eck$LassoCheckResult]: Stem: 8943#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8903#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 8904#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8946#$Ultimate##0 ~n := #in~n; 9010#L10 assume !(~n < 1); 9009#L12 assume !(1 == ~n); 9005#L15 call #t~ret4 := fibo2(~n - 1);< 9008#$Ultimate##0 ~n := #in~n; 9007#L20 assume !(~n < 1); 9006#L22 assume !(1 == ~n); 9001#L25 call #t~ret6 := fibo1(~n - 1);< 9004#$Ultimate##0 ~n := #in~n; 9003#L10 assume !(~n < 1); 9002#L12 assume !(1 == ~n); 8975#L15 call #t~ret4 := fibo2(~n - 1);< 9000#$Ultimate##0 ~n := #in~n; 8999#L20 assume !(~n < 1); 8995#L22 assume !(1 == ~n); 8919#L25 call #t~ret6 := fibo1(~n - 1);< 8976#$Ultimate##0 ~n := #in~n; 8997#L10 assume !(~n < 1); 9020#L12 assume !(1 == ~n); 9021#L15 call #t~ret4 := fibo2(~n - 1);< 9068#$Ultimate##0 ~n := #in~n; 9073#L20 assume !(~n < 1); 9072#L22 assume 1 == ~n;#res := 1; 9071#fibo2FINAL assume true; 9067#fibo2EXIT >#52#return; 8918#L15-1 call #t~ret5 := fibo2(~n - 2);< 8922#$Ultimate##0 ~n := #in~n; 9025#L20 assume ~n < 1;#res := 0; 9024#fibo2FINAL assume true; 9023#fibo2EXIT >#54#return; 9022#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 9019#fibo1FINAL assume true; 9017#fibo1EXIT >#48#return; 8992#L25-1 call #t~ret7 := fibo1(~n - 2);< 9091#$Ultimate##0 ~n := #in~n; 9109#L10 assume !(~n < 1); 8991#L12 assume !(1 == ~n); 8974#L15 call #t~ret4 := fibo2(~n - 1);< 8990#$Ultimate##0 ~n := #in~n; 8984#L20 assume !(~n < 1); 8980#L22 assume 1 == ~n;#res := 1; 8981#fibo2FINAL assume true; 9094#fibo2EXIT >#52#return; 8908#L15-1 [2023-11-23 22:35:53,790 INFO L750 eck$LassoCheckResult]: Loop: 8908#L15-1 call #t~ret5 := fibo2(~n - 2);< 9054#$Ultimate##0 ~n := #in~n; 8939#L20 assume !(~n < 1); 8940#L22 assume !(1 == ~n); 9099#L25 call #t~ret6 := fibo1(~n - 1);< 9101#$Ultimate##0 ~n := #in~n; 9113#L10 assume !(~n < 1); 9110#L12 assume !(1 == ~n); 8909#L15 call #t~ret4 := fibo2(~n - 1);< 9060#$Ultimate##0 ~n := #in~n; 9087#L20 assume !(~n < 1); 9085#L22 assume 1 == ~n;#res := 1; 9082#fibo2FINAL assume true; 9058#fibo2EXIT >#52#return; 8908#L15-1 [2023-11-23 22:35:53,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash -663651953, now seen corresponding path program 1 times [2023-11-23 22:35:53,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:53,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794200267] [2023-11-23 22:35:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 22:35:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 22:35:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 22:35:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794200267] [2023-11-23 22:35:53,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794200267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315268349] [2023-11-23 22:35:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:53,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:53,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:53,998 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-23 22:35:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:54,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:35:54,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 22:35:54,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 22:35:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315268349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:54,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:54,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2023-11-23 22:35:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569254989] [2023-11-23 22:35:54,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:54,298 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:54,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-23 22:35:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:54,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80469599] [2023-11-23 22:35:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:54,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:54,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:54,306 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:54,491 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:54,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:54,492 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:54,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:54,492 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:35:54,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:54,492 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:54,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration7_Loop [2023-11-23 22:35:54,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:54,492 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:54,493 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,496 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,503 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,505 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,511 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,514 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,568 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:54,568 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:35:54,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,571 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:54,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:54,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-23 22:35:54,615 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:54,615 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:54,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:54,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,635 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:54,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:54,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-23 22:35:54,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:54,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,686 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:35:54,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:54,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-23 22:35:54,703 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:35:54,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2023-11-23 22:35:54,715 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:54,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:54,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:54,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:54,715 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:35:54,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:54,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:54,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration7_Loop [2023-11-23 22:35:54,715 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:54,716 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:54,716 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,732 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,735 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,743 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:54,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:54,808 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:35:54,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,811 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,813 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 [2023-11-23 22:35:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-23 22:35:54,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:54,826 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:54,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:54,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:54,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:54,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:54,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:54,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:54,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:54,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,862 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,867 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 [2023-11-23 22:35:54,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:54,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:54,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:54,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:54,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:54,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:54,880 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:54,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-23 22:35:54,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:54,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-23 22:35:54,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,904 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-23 22:35:54,906 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 [2023-11-23 22:35:54,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:54,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:54,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:54,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:54,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:54,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:54,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:54,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:35:54,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-23 22:35:54,922 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-23 22:35:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:54,923 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:54,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-23 22:35:54,924 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:35:54,924 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:35:54,925 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:35:54,925 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-23 22:35:54,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:54,938 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:35:54,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:55,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:35:55,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:55,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:55,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 22:35:55,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:55,430 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 [2023-11-23 22:35:55,430 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:35:55,815 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1005 states and 1188 transitions. Complement of second has 40 states. [2023-11-23 22:35:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:35:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 61 transitions. [2023-11-23 22:35:55,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-23 22:35:55,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:55,823 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:35:55,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:55,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:35:55,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:56,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 22:35:56,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:56,249 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 [2023-11-23 22:35:56,249 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:35:56,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 621 states and 723 transitions. Complement of second has 26 states. [2023-11-23 22:35:56,530 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 [2023-11-23 22:35:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:35:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-23 22:35:56,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-23 22:35:56,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:56,531 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:35:56,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:56,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:35:56,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:56,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 22:35:56,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:57,017 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 [2023-11-23 22:35:57,017 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:35:57,449 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1402 states and 1651 transitions. Complement of second has 102 states. [2023-11-23 22:35:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:35:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2023-11-23 22:35:57,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-23 22:35:57,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:57,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 60 letters. Loop has 14 letters. [2023-11-23 22:35:57,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:57,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 28 letters. [2023-11-23 22:35:57,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:57,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1402 states and 1651 transitions. [2023-11-23 22:35:57,480 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 186 [2023-11-23 22:35:57,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1402 states to 782 states and 926 transitions. [2023-11-23 22:35:57,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 334 [2023-11-23 22:35:57,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 358 [2023-11-23 22:35:57,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 782 states and 926 transitions. [2023-11-23 22:35:57,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:57,494 INFO L218 hiAutomatonCegarLoop]: Abstraction has 782 states and 926 transitions. [2023-11-23 22:35:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states and 926 transitions. [2023-11-23 22:35:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 640. [2023-11-23 22:35:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 419 states have (on average 1.1479713603818615) internal successors, (481), 464 states have internal predecessors, (481), 126 states have call successors, (134), 95 states have call predecessors, (134), 95 states have return successors, (133), 80 states have call predecessors, (133), 99 states have call successors, (133) [2023-11-23 22:35:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 748 transitions. [2023-11-23 22:35:57,517 INFO L240 hiAutomatonCegarLoop]: Abstraction has 640 states and 748 transitions. [2023-11-23 22:35:57,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 22:35:57,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:35:57,518 INFO L87 Difference]: Start difference. First operand 640 states and 748 transitions. Second operand has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 22:35:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:35:57,774 INFO L93 Difference]: Finished difference Result 431 states and 477 transitions. [2023-11-23 22:35:57,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 477 transitions. [2023-11-23 22:35:57,780 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-23 22:35:57,783 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 270 states and 303 transitions. [2023-11-23 22:35:57,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-23 22:35:57,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2023-11-23 22:35:57,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 303 transitions. [2023-11-23 22:35:57,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:35:57,785 INFO L218 hiAutomatonCegarLoop]: Abstraction has 270 states and 303 transitions. [2023-11-23 22:35:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 303 transitions. [2023-11-23 22:35:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2023-11-23 22:35:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 173 states have (on average 1.0982658959537572) internal successors, (190), 186 states have internal predecessors, (190), 48 states have call successors, (52), 38 states have call predecessors, (52), 40 states have return successors, (51), 36 states have call predecessors, (51), 40 states have call successors, (51) [2023-11-23 22:35:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 293 transitions. [2023-11-23 22:35:57,794 INFO L240 hiAutomatonCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-23 22:35:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 22:35:57,795 INFO L428 stractBuchiCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-23 22:35:57,795 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-23 22:35:57,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 261 states and 293 transitions. [2023-11-23 22:35:57,798 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-23 22:35:57,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:35:57,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:35:57,799 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:57,799 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:57,800 INFO L748 eck$LassoCheckResult]: Stem: 14445#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 14409#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 14410#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 14451#$Ultimate##0 ~n := #in~n; 14532#L10 assume !(~n < 1); 14531#L12 assume !(1 == ~n); 14527#L15 call #t~ret4 := fibo2(~n - 1);< 14530#$Ultimate##0 ~n := #in~n; 14529#L20 assume !(~n < 1); 14528#L22 assume !(1 == ~n); 14523#L25 call #t~ret6 := fibo1(~n - 1);< 14526#$Ultimate##0 ~n := #in~n; 14525#L10 assume !(~n < 1); 14524#L12 assume !(1 == ~n); 14393#L15 call #t~ret4 := fibo2(~n - 1);< 14522#$Ultimate##0 ~n := #in~n; 14521#L20 assume !(~n < 1); 14520#L22 assume !(1 == ~n); 14511#L25 call #t~ret6 := fibo1(~n - 1);< 14519#$Ultimate##0 ~n := #in~n; 14517#L10 assume !(~n < 1); 14515#L12 assume !(1 == ~n); 14509#L15 call #t~ret4 := fibo2(~n - 1);< 14512#$Ultimate##0 ~n := #in~n; 14518#L20 assume !(~n < 1); 14516#L22 assume 1 == ~n;#res := 1; 14514#fibo2FINAL assume true; 14508#fibo2EXIT >#52#return; 14442#L15-1 call #t~ret5 := fibo2(~n - 2);< 14598#$Ultimate##0 ~n := #in~n; 14599#L20 assume ~n < 1;#res := 0; 14597#fibo2FINAL assume true; 14441#fibo2EXIT >#54#return; 14443#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14601#fibo1FINAL assume true; 14600#fibo1EXIT >#48#return; 14392#L25-1 call #t~ret7 := fibo1(~n - 2);< 14394#$Ultimate##0 ~n := #in~n; 14612#L10 assume !(~n < 1); 14609#L12 assume 1 == ~n;#res := 1; 14607#fibo1FINAL assume true; 14605#fibo1EXIT >#50#return; 14411#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 14412#fibo2FINAL assume true; 14595#fibo2EXIT >#52#return; 14423#L15-1 call #t~ret5 := fibo2(~n - 2);< 14487#$Ultimate##0 ~n := #in~n; 14610#L20 assume !(~n < 1); 14608#L22 assume 1 == ~n;#res := 1; 14606#fibo2FINAL assume true; 14604#fibo2EXIT >#54#return; 14591#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14603#fibo1FINAL assume true; 14578#fibo1EXIT >#48#return; 14537#L25-1 call #t~ret7 := fibo1(~n - 2);< 14565#$Ultimate##0 ~n := #in~n; 14541#L10 assume !(~n < 1); 14535#L12 assume !(1 == ~n); 14538#L15 call #t~ret4 := fibo2(~n - 1);< 14439#$Ultimate##0 [2023-11-23 22:35:57,800 INFO L750 eck$LassoCheckResult]: Loop: 14439#$Ultimate##0 ~n := #in~n; 14570#L20 assume !(~n < 1); 14567#L22 assume !(1 == ~n); 14400#L25 call #t~ret6 := fibo1(~n - 1);< 14542#$Ultimate##0 ~n := #in~n; 14543#L10 assume !(~n < 1); 14587#L12 assume !(1 == ~n); 14438#L15 call #t~ret4 := fibo2(~n - 1);< 14439#$Ultimate##0 [2023-11-23 22:35:57,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2006509536, now seen corresponding path program 1 times [2023-11-23 22:35:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:57,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920747819] [2023-11-23 22:35:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:57,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 22:35:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:35:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:35:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:35:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 22:35:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:35:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920747819] [2023-11-23 22:35:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920747819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:35:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978611877] [2023-11-23 22:35:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:58,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:35:58,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,072 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-23 22:35:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:58,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 22:35:58,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 22:35:58,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:35:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 22:35:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978611877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:35:58,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:35:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 21 [2023-11-23 22:35:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847094262] [2023-11-23 22:35:58,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:35:58,504 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:35:58,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-23 22:35:58,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:58,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171763763] [2023-11-23 22:35:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:58,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:58,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:58,607 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:58,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:58,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:58,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:58,607 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:35:58,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:58,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:58,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration8_Loop [2023-11-23 22:35:58,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:58,608 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:58,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,615 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,617 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,627 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,668 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:58,668 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:35:58,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,669 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:58,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:58,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-23 22:35:58,707 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:58,707 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:58,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:58,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,726 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:58,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:58,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-23 22:35:58,763 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:58,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:58,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,783 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:58,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:58,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-23 22:35:58,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:58,807 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:58,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2023-11-23 22:35:58,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,821 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-23 22:35:58,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:58,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:58,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:35:58,834 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:35:58,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-23 22:35:58,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,848 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-23 22:35:58,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:35:58,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:58,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2023-11-23 22:35:58,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:58,875 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:58,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:35:58,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:35:58,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-23 22:35:58,948 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:35:58,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-23 22:35:58,951 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:35:58,951 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:35:58,951 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:35:58,951 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:35:58,951 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:35:58,951 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:58,951 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:35:58,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:35:58,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration8_Loop [2023-11-23 22:35:58,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:35:58,952 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:35:58,952 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,956 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,958 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:58,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:35:59,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:35:59,033 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:35:59,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:59,035 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:59,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-23 22:35:59,038 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 [2023-11-23 22:35:59,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:59,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:59,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:59,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:59,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:59,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:59,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:59,051 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:59,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-23 22:35:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:59,063 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:59,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-23 22:35:59,065 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 [2023-11-23 22:35:59,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:59,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:59,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:59,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:59,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:59,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:59,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:59,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:59,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:59,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:59,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:59,109 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:59,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-23 22:35:59,110 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 [2023-11-23 22:35:59,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:59,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:59,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:59,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:59,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:59,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:59,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:59,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:59,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-11-23 22:35:59,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:59,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:59,134 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:59,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-23 22:35:59,136 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 [2023-11-23 22:35:59,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:59,146 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:59,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:59,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:59,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:59,147 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:59,147 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:59,148 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:35:59,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2023-11-23 22:35:59,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:59,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:59,160 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:59,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-23 22:35:59,162 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 [2023-11-23 22:35:59,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:35:59,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:35:59,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:35:59,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:35:59,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:35:59,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:35:59,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:35:59,177 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:35:59,178 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-23 22:35:59,179 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 22:35:59,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:35:59,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:59,180 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:59,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-23 22:35:59,181 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:35:59,181 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:35:59,182 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:35:59,182 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-23 22:35:59,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2023-11-23 22:35:59,198 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:35:59,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:59,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 22:35:59,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:59,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:35:59,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:35:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:59,746 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-23 22:35:59,747 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:59,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2023-11-23 22:35:59,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 279 states and 311 transitions. Complement of second has 15 states. [2023-11-23 22:35:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-23 22:35:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:35:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-23 22:35:59,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-23 22:35:59,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:35:59,890 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:35:59,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:59,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 22:35:59,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:00,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:36:00,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:00,432 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-23 22:36:00,432 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:00,543 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 279 states and 311 transitions. Complement of second has 15 states. [2023-11-23 22:36:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-23 22:36:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-23 22:36:00,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-23 22:36:00,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:00,544 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:36:00,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:00,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 22:36:00,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:01,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:36:01,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:01,195 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-23 22:36:01,195 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:01,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 410 states and 449 transitions. Complement of second has 27 states. [2023-11-23 22:36:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-23 22:36:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-23 22:36:01,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-23 22:36:01,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:01,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-23 22:36:01,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:01,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 59 letters. Loop has 16 letters. [2023-11-23 22:36:01,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:01,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 449 transitions. [2023-11-23 22:36:01,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-23 22:36:01,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 287 states and 318 transitions. [2023-11-23 22:36:01,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-23 22:36:01,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2023-11-23 22:36:01,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 318 transitions. [2023-11-23 22:36:01,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:36:01,429 INFO L218 hiAutomatonCegarLoop]: Abstraction has 287 states and 318 transitions. [2023-11-23 22:36:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 318 transitions. [2023-11-23 22:36:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 266. [2023-11-23 22:36:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 179 states have (on average 1.094972067039106) internal successors, (196), 191 states have internal predecessors, (196), 48 states have call successors, (52), 39 states have call predecessors, (52), 39 states have return successors, (48), 35 states have call predecessors, (48), 39 states have call successors, (48) [2023-11-23 22:36:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2023-11-23 22:36:01,440 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 296 transitions. [2023-11-23 22:36:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:36:01,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 22:36:01,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-23 22:36:01,441 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 21 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-23 22:36:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:36:01,835 INFO L93 Difference]: Finished difference Result 315 states and 364 transitions. [2023-11-23 22:36:01,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 364 transitions. [2023-11-23 22:36:01,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-23 22:36:01,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 289 states and 332 transitions. [2023-11-23 22:36:01,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2023-11-23 22:36:01,847 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 168 [2023-11-23 22:36:01,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 332 transitions. [2023-11-23 22:36:01,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:36:01,847 INFO L218 hiAutomatonCegarLoop]: Abstraction has 289 states and 332 transitions. [2023-11-23 22:36:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 332 transitions. [2023-11-23 22:36:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 264. [2023-11-23 22:36:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 176 states have (on average 1.0965909090909092) internal successors, (193), 188 states have internal predecessors, (193), 50 states have call successors, (53), 39 states have call predecessors, (53), 38 states have return successors, (53), 36 states have call predecessors, (53), 38 states have call successors, (53) [2023-11-23 22:36:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 299 transitions. [2023-11-23 22:36:01,856 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-23 22:36:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 22:36:01,857 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-23 22:36:01,857 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-23 22:36:01,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 299 transitions. [2023-11-23 22:36:01,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-23 22:36:01,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:36:01,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:36:01,865 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:36:01,865 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:36:01,866 INFO L748 eck$LassoCheckResult]: Stem: 17454#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17420#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 17421#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17457#$Ultimate##0 ~n := #in~n; 17556#L10 assume !(~n < 1); 17554#L12 assume !(1 == ~n); 17551#L15 call #t~ret4 := fibo2(~n - 1);< 17552#$Ultimate##0 ~n := #in~n; 17564#L20 assume !(~n < 1); 17562#L22 assume !(1 == ~n); 17559#L25 call #t~ret6 := fibo1(~n - 1);< 17560#$Ultimate##0 ~n := #in~n; 17572#L10 assume !(~n < 1); 17570#L12 assume !(1 == ~n); 17567#L15 call #t~ret4 := fibo2(~n - 1);< 17568#$Ultimate##0 ~n := #in~n; 17582#L20 assume !(~n < 1); 17579#L22 assume !(1 == ~n); 17448#L25 call #t~ret6 := fibo1(~n - 1);< 17578#$Ultimate##0 ~n := #in~n; 17597#L10 assume !(~n < 1); 17530#L12 assume !(1 == ~n); 17447#L15 call #t~ret4 := fibo2(~n - 1);< 17449#$Ultimate##0 ~n := #in~n; 17593#L20 assume !(~n < 1); 17592#L22 assume 1 == ~n;#res := 1; 17591#fibo2FINAL assume true; 17590#fibo2EXIT >#52#return; 17586#L15-1 call #t~ret5 := fibo2(~n - 2);< 17587#$Ultimate##0 ~n := #in~n; 17589#L20 assume ~n < 1;#res := 0; 17588#fibo2FINAL assume true; 17585#fibo2EXIT >#54#return; 17584#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17581#fibo1FINAL assume true; 17577#fibo1EXIT >#48#return; 17574#L25-1 call #t~ret7 := fibo1(~n - 2);< 17575#$Ultimate##0 ~n := #in~n; 17583#L10 assume !(~n < 1); 17580#L12 assume 1 == ~n;#res := 1; 17576#fibo1FINAL assume true; 17573#fibo1EXIT >#50#return; 17571#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17569#fibo2FINAL assume true; 17566#fibo2EXIT >#52#return; 17408#L15-1 call #t~ret5 := fibo2(~n - 2);< 17541#$Ultimate##0 ~n := #in~n; 17504#L20 assume !(~n < 1); 17503#L22 assume !(1 == ~n); 17430#L25 call #t~ret6 := fibo1(~n - 1);< 17498#$Ultimate##0 ~n := #in~n; 17496#L10 assume !(~n < 1); 17497#L12 assume !(1 == ~n); 17435#L15 call #t~ret4 := fibo2(~n - 1);< 17451#$Ultimate##0 ~n := #in~n; 17527#L20 assume !(~n < 1); 17528#L22 assume !(1 == ~n); 17424#L25 call #t~ret6 := fibo1(~n - 1);< 17423#$Ultimate##0 ~n := #in~n; 17425#L10 assume !(~n < 1); 17524#L12 assume !(1 == ~n); 17521#L15 [2023-11-23 22:36:01,866 INFO L750 eck$LassoCheckResult]: Loop: 17521#L15 call #t~ret4 := fibo2(~n - 1);< 17522#$Ultimate##0 ~n := #in~n; 17527#L20 assume !(~n < 1); 17528#L22 assume !(1 == ~n); 17424#L25 call #t~ret6 := fibo1(~n - 1);< 17423#$Ultimate##0 ~n := #in~n; 17425#L10 assume !(~n < 1); 17524#L12 assume !(1 == ~n); 17521#L15 [2023-11-23 22:36:01,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1632318521, now seen corresponding path program 2 times [2023-11-23 22:36:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:36:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073646997] [2023-11-23 22:36:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:36:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 22:36:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:36:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 22:36:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:36:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 22:36:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:36:02,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:36:02,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073646997] [2023-11-23 22:36:02,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073646997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:36:02,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876966215] [2023-11-23 22:36:02,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:36:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:36:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,089 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-23 22:36:02,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:36:02,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:36:02,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:36:02,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:36:02,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:36:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:36:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876966215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:36:02,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:36:02,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 16 [2023-11-23 22:36:02,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913888676] [2023-11-23 22:36:02,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:36:02,391 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:36:02,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-23 22:36:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:36:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987764459] [2023-11-23 22:36:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:02,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:36:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:36:02,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:36:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:36:02,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:36:02,542 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:36:02,542 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:36:02,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:36:02,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:36:02,542 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-23 22:36:02,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:36:02,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:36:02,543 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration9_Loop [2023-11-23 22:36:02,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:36:02,543 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:36:02,543 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,555 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,557 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:02,627 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:36:02,628 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-23 22:36:02,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,630 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2023-11-23 22:36:02,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,659 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2023-11-23 22:36:02,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,674 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-23 22:36:02,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,687 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2023-11-23 22:36:02,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,707 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-23 22:36:02,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,721 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2023-11-23 22:36:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,737 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-23 22:36:02,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2023-11-23 22:36:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,771 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-23 22:36:02,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,784 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2023-11-23 22:36:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,798 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-23 22:36:02,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:02,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,827 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-23 22:36:02,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-23 22:36:02,841 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-23 22:36:02,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:02,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,858 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-23 22:36:02,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-23 22:36:02,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:02,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:02,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:02,893 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:02,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-23 22:36:02,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-23 22:36:02,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-23 22:36:05,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-23 22:36:05,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-23 22:36:05,326 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:36:05,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:36:05,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:36:05,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:36:05,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:36:05,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:36:05,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:36:05,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-2.c_Iteration9_Loop [2023-11-23 22:36:05,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:36:05,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:36:05,328 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,337 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,343 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,345 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,347 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:36:05,436 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:36:05,436 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:36:05,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,441 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-23 22:36:05,443 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 [2023-11-23 22:36:05,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,454 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,454 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,455 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2023-11-23 22:36:05,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,468 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-23 22:36:05,469 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 [2023-11-23 22:36:05,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,482 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2023-11-23 22:36:05,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,496 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-23 22:36:05,498 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 [2023-11-23 22:36:05,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,511 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2023-11-23 22:36:05,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,526 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,546 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 [2023-11-23 22:36:05,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-23 22:36:05,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,557 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,557 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,586 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2023-11-23 22:36:05,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,607 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-23 22:36:05,608 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 [2023-11-23 22:36:05,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,622 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:05,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,637 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-23 22:36:05,638 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 [2023-11-23 22:36:05,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,686 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2023-11-23 22:36:05,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,704 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-23 22:36:05,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:36:05,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:36:05,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,731 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-23 22:36:05,732 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 [2023-11-23 22:36:05,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:36:05,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:36:05,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:36:05,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:36:05,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:36:05,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:36:05,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:36:05,746 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:36:05,748 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-23 22:36:05,748 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-23 22:36:05,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:36:05,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:05,750 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:05,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-23 22:36:05,751 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:36:05,751 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-23 22:36:05,751 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:36:05,751 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-23 22:36:05,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2023-11-23 22:36:05,765 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-23 22:36:05,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:05,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 22:36:05,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:06,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:36:06,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:06,277 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 [2023-11-23 22:36:06,277 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:06,387 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 288 states and 323 transitions. Complement of second has 19 states. [2023-11-23 22:36:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-23 22:36:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-23 22:36:06,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-23 22:36:06,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:06,389 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:36:06,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:06,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 22:36:06,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:06,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:36:06,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:06,862 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-23 22:36:06,862 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:06,990 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 288 states and 323 transitions. Complement of second has 21 states. [2023-11-23 22:36:06,995 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 [2023-11-23 22:36:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-23 22:36:06,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-23 22:36:06,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:06,996 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-23 22:36:07,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:07,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 22:36:07,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:07,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:07,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 22:36:07,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:07,508 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-23 22:36:07,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:07,650 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 573 states and 653 transitions. Complement of second has 33 states. [2023-11-23 22:36:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-23 22:36:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-23 22:36:07,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-23 22:36:07,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:07,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-23 22:36:07,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:07,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 16 letters. [2023-11-23 22:36:07,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:36:07,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 573 states and 653 transitions. [2023-11-23 22:36:07,674 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 22:36:07,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 573 states to 0 states and 0 transitions. [2023-11-23 22:36:07,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-23 22:36:07,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-23 22:36:07,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-23 22:36:07,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:36:07,675 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:36:07,675 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:36:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:36:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:36:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:36:07,676 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:36:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:36:07,676 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-23 22:36:07,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-23 22:36:07,677 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 22:36:07,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 22:36:07,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-23 22:36:07,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-23 22:36:07,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-23 22:36:07,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:36:07,677 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:36:07,678 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:36:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:36:07,678 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:36:07,678 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-23 22:36:07,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-23 22:36:07,679 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-23 22:36:07,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-23 22:36:07,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 10:36:07 BoogieIcfgContainer [2023-11-23 22:36:07,687 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-23 22:36:07,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:36:07,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:36:07,688 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:36:07,688 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:38" (3/4) ... [2023-11-23 22:36:07,690 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 22:36:07,691 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:36:07,692 INFO L158 Benchmark]: Toolchain (without parser) took 29550.19ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 111.5MB in the beginning and 186.9MB in the end (delta: -75.3MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2023-11-23 22:36:07,692 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:36:07,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.06ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 101.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:36:07,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.42ms. Allocated memory is still 157.3MB. Free memory was 101.1MB in the beginning and 99.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:36:07,693 INFO L158 Benchmark]: Boogie Preprocessor took 28.68ms. Allocated memory is still 157.3MB. Free memory was 99.6MB in the beginning and 98.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:36:07,694 INFO L158 Benchmark]: RCFGBuilder took 291.08ms. Allocated memory is still 157.3MB. Free memory was 98.0MB in the beginning and 88.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:36:07,694 INFO L158 Benchmark]: BuchiAutomizer took 28960.52ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 88.0MB in the beginning and 187.9MB in the end (delta: -99.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-23 22:36:07,695 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 272.6MB. Free memory is still 186.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:36:07,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.06ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 101.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.42ms. Allocated memory is still 157.3MB. Free memory was 101.1MB in the beginning and 99.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.68ms. Allocated memory is still 157.3MB. Free memory was 99.6MB in the beginning and 98.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.08ms. Allocated memory is still 157.3MB. Free memory was 98.0MB in the beginning and 88.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 28960.52ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 88.0MB in the beginning and 187.9MB in the end (delta: -99.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 272.6MB. Free memory is still 186.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (8 trivial, 2 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 28.9s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 15.5s. Construction of modules took 2.4s. Büchi inclusion checks took 10.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 12. Automata minimization 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 408 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1142 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1106 mSDsluCounter, 1829 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1366 mSDsCounter, 600 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3114 IncrementalHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 600 mSolverCounterUnsat, 463 mSDtfsCounter, 3114 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf93 smp66 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 57ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 30 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-23 22:36:07,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:07,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-23 22:36:08,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-23 22:36:08,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:08,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-23 22:36:08,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:08,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-23 22:36:09,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-23 22:36:09,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-23 22:36:09,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715f1462-3835-41a5-8c2e-52ab697f17fd/bin/uautomizer-verify-zZY32mL2XJ/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