./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme --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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:56:18,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:56:19,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 11:56:19,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:56:19,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:56:19,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:56:19,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:56:19,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:56:19,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:56:19,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:56:19,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:56:19,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:56:19,148 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:56:19,151 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:56:19,151 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:56:19,152 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:56:19,152 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:56:19,154 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:56:19,155 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:56:19,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:56:19,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:56:19,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:56:19,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:56:19,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:56:19,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:56:19,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:56:19,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:56:19,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:56:19,160 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:56:19,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:56:19,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:56:19,163 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:56:19,163 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:56:19,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:56:19,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:56:19,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:56:19,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:56:19,165 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:56:19,165 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_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2023-11-26 11:56:19,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:56:19,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:56:19,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:56:19,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:56:19,518 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:56:19,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive/Fibonacci03.c [2023-11-26 11:56:22,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:56:22,881 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:56:22,881 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/sv-benchmarks/c/recursive/Fibonacci03.c [2023-11-26 11:56:22,889 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/data/98c90bc6e/4fa0cc7755e04365993ee997a1f65f29/FLAG1de1eb0ca [2023-11-26 11:56:22,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/data/98c90bc6e/4fa0cc7755e04365993ee997a1f65f29 [2023-11-26 11:56:22,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:56:22,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:56:22,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:22,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:56:22,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:56:22,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:22" (1/1) ... [2023-11-26 11:56:22,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0102b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:22, skipping insertion in model container [2023-11-26 11:56:22,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:22" (1/1) ... [2023-11-26 11:56:22,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:56:23,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:23,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:56:23,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:23,129 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:56:23,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23 WrapperNode [2023-11-26 11:56:23,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:23,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:23,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:56:23,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:56:23,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,168 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-11-26 11:56:23,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:23,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:56:23,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:56:23,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:56:23,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,193 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:56:23,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:56:23,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:56:23,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:56:23,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:56:23,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (1/1) ... [2023-11-26 11:56:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:23,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:23,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:23,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:56:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2023-11-26 11:56:23,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2023-11-26 11:56:23,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:56:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:56:23,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:56:23,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:56:23,380 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:56:23,383 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:23,573 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:23,584 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:23,584 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:56:23,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:23 BoogieIcfgContainer [2023-11-26 11:56:23,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:23,588 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:56:23,588 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:56:23,592 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:56:23,598 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:56:23,598 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:56:22" (1/3) ... [2023-11-26 11:56:23,599 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2119f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:56:23, skipping insertion in model container [2023-11-26 11:56:23,599 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:56:23,600 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:23" (2/3) ... [2023-11-26 11:56:23,600 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2119f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:56:23, skipping insertion in model container [2023-11-26 11:56:23,600 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:56:23,600 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:23" (3/3) ... [2023-11-26 11:56:23,606 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci03.c [2023-11-26 11:56:23,676 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:56:23,676 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:56:23,677 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:56:23,677 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:56:23,677 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:56:23,700 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:56:23,701 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:56:23,702 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:56:23,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:56:23,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:23,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:56:23,739 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:56:23,745 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 11:56:23,746 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:56:23,746 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:56:23,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:56:23,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:23,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:56:23,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:56:23,752 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 11:56:23,752 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:56:23,760 INFO L748 eck$LassoCheckResult]: Stem: 18#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 8#L29true assume !(main_~x~0#1 > 46); 12#L32true call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 15#$Ultimate##0true [2023-11-26 11:56:23,761 INFO L750 eck$LassoCheckResult]: Loop: 15#$Ultimate##0true ~n := #in~n; 4#L17true assume !(~n < 1); 19#L19true assume !(1 == ~n); 17#L22true call #t~ret4 := fibonacci(~n - 1);< 15#$Ultimate##0true [2023-11-26 11:56:23,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1325878, now seen corresponding path program 1 times [2023-11-26 11:56:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:23,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682347166] [2023-11-26 11:56:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:23,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:23,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:23,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 927648, now seen corresponding path program 1 times [2023-11-26 11:56:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905284746] [2023-11-26 11:56:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:23,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:23,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:24,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash 410501205, now seen corresponding path program 1 times [2023-11-26 11:56:24,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:24,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096496752] [2023-11-26 11:56:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:24,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:24,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:24,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:24,194 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:24,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:24,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:24,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:24,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:56:24,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:24,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:24,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration1_Loop [2023-11-26 11:56:24,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:24,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:24,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,312 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:24,313 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:56:24,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:24,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:24,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 11:56:24,363 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:56:24,363 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:56:24,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 11:56:24,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:24,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:24,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:56:24,408 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:56:24,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:24,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:24,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 11:56:24,454 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:56:24,454 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:56:24,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:24,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:24,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 11:56:24,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 11:56:24,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:56:24,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:24,618 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:56:24,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,623 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:24,623 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:24,623 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:24,623 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:24,623 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:56:24,623 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,623 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:24,624 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:24,624 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration1_Loop [2023-11-26 11:56:24,624 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:24,624 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:24,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,631 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,638 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:24,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:24,741 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:56:24,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,757 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 [2023-11-26 11:56:24,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 11:56:24,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:24,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:24,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:24,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:24,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:24,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:24,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:24,788 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:24,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 11:56:24,809 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 [2023-11-26 11:56:24,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:24,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:24,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:24,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:24,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:24,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:24,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:24,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:24,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 11:56:24,845 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 [2023-11-26 11:56:24,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:24,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:24,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:24,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:24,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:24,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:24,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:24,883 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:24,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 11:56:24,898 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 [2023-11-26 11:56:24,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:24,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:24,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:24,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:24,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:24,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:24,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:24,929 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:56:24,933 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:56:24,933 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:56:24,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:24,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:24,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:24,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 11:56:24,983 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:56:24,984 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:56:24,984 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:56:24,984 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2023-11-26 11:56:24,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,997 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:56:25,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:56:25,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:56:25,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:25,158 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-26 11:56:25,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:25,269 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 64 transitions. Complement of second has 12 states. [2023-11-26 11:56:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:25,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-26 11:56:25,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-26 11:56:25,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:25,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2023-11-26 11:56:25,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:25,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2023-11-26 11:56:25,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:25,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 64 transitions. [2023-11-26 11:56:25,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:25,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 26 states and 35 transitions. [2023-11-26 11:56:25,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-26 11:56:25,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-26 11:56:25,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 35 transitions. [2023-11-26 11:56:25,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:25,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-26 11:56:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 35 transitions. [2023-11-26 11:56:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-11-26 11:56:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:56:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-26 11:56:25,360 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-26 11:56:25,360 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-26 11:56:25,360 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 11:56:25,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2023-11-26 11:56:25,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:25,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:56:25,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:56:25,363 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:25,363 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:25,363 INFO L748 eck$LassoCheckResult]: Stem: 141#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 142#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 143#L29 assume !(main_~x~0#1 > 46); 130#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 146#$Ultimate##0 ~n := #in~n; 137#L17 assume !(~n < 1); 138#L19 assume !(1 == ~n); 131#L22 call #t~ret4 := fibonacci(~n - 1);< 139#$Ultimate##0 ~n := #in~n; 134#L17 assume ~n < 1;#res := 0; 135#fibonacciFINAL assume true; 140#fibonacciEXIT >#36#return; 129#L22-1 [2023-11-26 11:56:25,363 INFO L750 eck$LassoCheckResult]: Loop: 129#L22-1 call #t~ret5 := fibonacci(~n - 2);< 133#$Ultimate##0 ~n := #in~n; 149#L17 assume !(~n < 1); 148#L19 assume !(1 == ~n); 132#L22 call #t~ret4 := fibonacci(~n - 1);< 133#$Ultimate##0 ~n := #in~n; 149#L17 assume ~n < 1;#res := 0; 145#fibonacciFINAL assume true; 147#fibonacciEXIT >#36#return; 129#L22-1 [2023-11-26 11:56:25,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1689937232, now seen corresponding path program 1 times [2023-11-26 11:56:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:25,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043621098] [2023-11-26 11:56:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:56:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:56:25,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:25,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043621098] [2023-11-26 11:56:25,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043621098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:25,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:25,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:56:25,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322927106] [2023-11-26 11:56:25,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:25,507 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 11:56:25,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1163555262, now seen corresponding path program 1 times [2023-11-26 11:56:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:25,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127450913] [2023-11-26 11:56:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:56:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:56:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127450913] [2023-11-26 11:56:25,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127450913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:25,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:25,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:56:25,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758215148] [2023-11-26 11:56:25,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:25,616 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 11:56:25,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:56:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:56:25,621 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:25,726 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-11-26 11:56:25,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2023-11-26 11:56:25,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:25,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2023-11-26 11:56:25,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-11-26 11:56:25,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-26 11:56:25,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2023-11-26 11:56:25,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:25,732 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-26 11:56:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2023-11-26 11:56:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-26 11:56:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:56:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-26 11:56:25,737 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-26 11:56:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:25,739 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-26 11:56:25,739 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 11:56:25,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2023-11-26 11:56:25,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:25,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:56:25,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:56:25,742 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:25,742 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 11:56:25,743 INFO L748 eck$LassoCheckResult]: Stem: 216#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 217#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 218#L29 assume !(main_~x~0#1 > 46); 205#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 220#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 212#L19 assume !(1 == ~n); 206#L22 call #t~ret4 := fibonacci(~n - 1);< 213#$Ultimate##0 ~n := #in~n; 209#L17 assume !(~n < 1); 210#L19 assume 1 == ~n;#res := 1; 221#fibonacciFINAL assume true; 225#fibonacciEXIT >#36#return; 204#L22-1 [2023-11-26 11:56:25,743 INFO L750 eck$LassoCheckResult]: Loop: 204#L22-1 call #t~ret5 := fibonacci(~n - 2);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume !(1 == ~n); 207#L22 call #t~ret4 := fibonacci(~n - 1);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume !(1 == ~n); 207#L22 call #t~ret4 := fibonacci(~n - 1);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume 1 == ~n;#res := 1; 222#fibonacciFINAL assume true; 223#fibonacciEXIT >#36#return; 204#L22-1 call #t~ret5 := fibonacci(~n - 2);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume ~n < 1;#res := 0; 228#fibonacciFINAL assume true; 214#fibonacciEXIT >#38#return; 215#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 219#fibonacciFINAL assume true; 224#fibonacciEXIT >#36#return; 204#L22-1 [2023-11-26 11:56:25,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -848422362, now seen corresponding path program 1 times [2023-11-26 11:56:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842424059] [2023-11-26 11:56:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:25,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:25,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:25,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1698967994, now seen corresponding path program 1 times [2023-11-26 11:56:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274008859] [2023-11-26 11:56:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:25,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:25,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:25,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 250475039, now seen corresponding path program 1 times [2023-11-26 11:56:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:25,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428707940] [2023-11-26 11:56:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:56:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 11:56:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:56:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 11:56:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:25,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428707940] [2023-11-26 11:56:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428707940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833772854] [2023-11-26 11:56:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:25,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:25,948 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:25,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:56:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:26,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:26,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-26 11:56:26,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 11:56:26,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833772854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:26,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:26,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-26 11:56:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532593384] [2023-11-26 11:56:26,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:26,705 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:26,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:26,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:26,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:26,706 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:56:26,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:26,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:26,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:26,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration3_Loop [2023-11-26 11:56:26,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:26,707 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:26,709 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:26,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:26,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:26,737 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:26,817 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:26,817 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:56:26,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:26,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:26,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:26,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:26,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:26,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 11:56:26,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:26,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:26,859 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:26,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 11:56:26,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:56:26,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:27,225 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:56:27,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:27,230 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:27,230 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:27,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:27,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:27,230 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:56:27,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:27,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:27,231 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:27,231 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration3_Loop [2023-11-26 11:56:27,231 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:27,231 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:27,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:27,240 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:27,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:27,246 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:27,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:27,335 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:56:27,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:27,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:27,340 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:27,353 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 [2023-11-26 11:56:27,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:27,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:27,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:27,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:27,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:27,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:27,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:27,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 11:56:27,383 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:27,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:27,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:27,394 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:27,405 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 [2023-11-26 11:56:27,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:27,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:27,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:27,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:27,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:27,419 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:27,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:27,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 11:56:27,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:27,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:27,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:27,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:27,439 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:27,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:56:27,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:27,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:27,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:27,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:27,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:27,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:27,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:27,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 11:56:27,472 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:27,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:27,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:27,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:27,481 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:27,486 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 [2023-11-26 11:56:27,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 11:56:27,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:27,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:27,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:27,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:27,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:27,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:27,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:27,510 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:56:27,514 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:56:27,514 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:56:27,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:27,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:27,524 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:27,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 11:56:27,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:56:27,535 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:56:27,535 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:56:27,535 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2023-11-26 11:56:27,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:27,544 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:56:27,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:27,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:27,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:27,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:56:27,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:56:27,883 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-26 11:56:27,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:56:28,184 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 160 states and 216 transitions. Complement of second has 48 states. [2023-11-26 11:56:28,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:56:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 42 transitions. [2023-11-26 11:56:28,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 22 letters. [2023-11-26 11:56:28,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:28,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 35 letters. Loop has 22 letters. [2023-11-26 11:56:28,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:28,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 44 letters. [2023-11-26 11:56:28,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:28,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 216 transitions. [2023-11-26 11:56:28,210 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-26 11:56:28,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 129 states and 181 transitions. [2023-11-26 11:56:28,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2023-11-26 11:56:28,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2023-11-26 11:56:28,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 181 transitions. [2023-11-26 11:56:28,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:28,218 INFO L218 hiAutomatonCegarLoop]: Abstraction has 129 states and 181 transitions. [2023-11-26 11:56:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 181 transitions. [2023-11-26 11:56:28,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2023-11-26 11:56:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2023-11-26 11:56:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2023-11-26 11:56:28,237 INFO L240 hiAutomatonCegarLoop]: Abstraction has 107 states and 141 transitions. [2023-11-26 11:56:28,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:56:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:56:28,238 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:56:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:28,322 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2023-11-26 11:56:28,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 58 transitions. [2023-11-26 11:56:28,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:28,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 54 transitions. [2023-11-26 11:56:28,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-26 11:56:28,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-26 11:56:28,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2023-11-26 11:56:28,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:28,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-11-26 11:56:28,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2023-11-26 11:56:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-11-26 11:56:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-26 11:56:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-11-26 11:56:28,332 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-26 11:56:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:56:28,333 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-26 11:56:28,333 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 11:56:28,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2023-11-26 11:56:28,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-26 11:56:28,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:56:28,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:56:28,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:28,337 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 11:56:28,337 INFO L748 eck$LassoCheckResult]: Stem: 989#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 990#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 991#L29 assume !(main_~x~0#1 > 46); 981#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 994#$Ultimate##0 ~n := #in~n; 985#L17 assume !(~n < 1); 986#L19 assume !(1 == ~n); 980#L22 call #t~ret4 := fibonacci(~n - 1);< 982#$Ultimate##0 ~n := #in~n; 999#L17 assume !(~n < 1); 1012#L19 assume !(1 == ~n); 992#L22 call #t~ret4 := fibonacci(~n - 1);< 982#$Ultimate##0 ~n := #in~n; 998#L17 assume !(~n < 1); 995#L19 assume 1 == ~n;#res := 1; 996#fibonacciFINAL assume true; 1010#fibonacciEXIT >#36#return; 1007#L22-1 call #t~ret5 := fibonacci(~n - 2);< 1008#$Ultimate##0 ~n := #in~n; 1011#L17 assume ~n < 1;#res := 0; 1009#fibonacciFINAL assume true; 1006#fibonacciEXIT >#38#return; 1005#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1004#fibonacciFINAL assume true; 1003#fibonacciEXIT >#36#return; 977#L22-1 [2023-11-26 11:56:28,337 INFO L750 eck$LassoCheckResult]: Loop: 977#L22-1 call #t~ret5 := fibonacci(~n - 2);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume !(1 == ~n); 976#L22 call #t~ret4 := fibonacci(~n - 1);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume !(1 == ~n); 976#L22 call #t~ret4 := fibonacci(~n - 1);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume 1 == ~n;#res := 1; 1001#fibonacciFINAL assume true; 1013#fibonacciEXIT >#36#return; 975#L22-1 call #t~ret5 := fibonacci(~n - 2);< 978#$Ultimate##0 ~n := #in~n; 983#L17 assume ~n < 1;#res := 0; 984#fibonacciFINAL assume true; 987#fibonacciEXIT >#38#return; 988#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 993#fibonacciFINAL assume true; 997#fibonacciEXIT >#36#return; 977#L22-1 [2023-11-26 11:56:28,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1885512200, now seen corresponding path program 2 times [2023-11-26 11:56:28,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:28,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689839497] [2023-11-26 11:56:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:28,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:28,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:28,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1698967994, now seen corresponding path program 2 times [2023-11-26 11:56:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695598639] [2023-11-26 11:56:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:28,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:28,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:28,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash -360938367, now seen corresponding path program 3 times [2023-11-26 11:56:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122859619] [2023-11-26 11:56:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-26 11:56:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:56:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:56:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:56:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:56:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:56:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:28,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122859619] [2023-11-26 11:56:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122859619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671037157] [2023-11-26 11:56:28,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:56:28,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:28,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:28,659 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:28,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:56:28,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-26 11:56:28,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:56:28,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:56:28,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-26 11:56:28,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 11:56:29,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671037157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:29,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:29,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 21 [2023-11-26 11:56:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683201089] [2023-11-26 11:56:29,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:29,632 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:29,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:29,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:29,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:29,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:56:29,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:29,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:29,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:29,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration4_Loop [2023-11-26 11:56:29,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:29,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:29,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:29,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:29,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:29,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:29,731 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:29,731 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:56:29,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:29,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:29,733 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:29,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 11:56:29,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:29,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:29,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:29,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:29,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:29,785 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:29,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 11:56:29,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:56:29,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:30,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:56:30,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:30,140 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:30,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:30,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:30,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:30,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:56:30,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:30,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:30,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:30,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration4_Loop [2023-11-26 11:56:30,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:30,141 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:30,141 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:30,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:30,162 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:30,165 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:30,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:30,251 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:56:30,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:30,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:30,262 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 [2023-11-26 11:56:30,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 11:56:30,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:30,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:30,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:30,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:30,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:30,277 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:30,277 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:30,295 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:56:30,300 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:56:30,300 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:56:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:30,304 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:30,306 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:56:30,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:56:30,307 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:56:30,307 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2023-11-26 11:56:30,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-26 11:56:30,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:30,317 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:56:30,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:30,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:56:30,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:30,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:30,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:56:30,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:56:30,814 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-26 11:56:30,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:56:30,930 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2023-11-26 11:56:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:56:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-26 11:56:30,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-26 11:56:30,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:30,940 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:56:30,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:30,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:56:30,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:31,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:56:31,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:56:31,405 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-26 11:56:31,407 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:56:31,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2023-11-26 11:56:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:56:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-26 11:56:31,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-26 11:56:31,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:31,532 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:56:31,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:31,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:56:31,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:31,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:56:31,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:56:32,000 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-26 11:56:32,000 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:56:32,296 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 345 states and 444 transitions. Complement of second has 125 states. [2023-11-26 11:56:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:56:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2023-11-26 11:56:32,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-26 11:56:32,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:32,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 47 letters. Loop has 22 letters. [2023-11-26 11:56:32,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:32,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 44 letters. [2023-11-26 11:56:32,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:32,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 444 transitions. [2023-11-26 11:56:32,315 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-26 11:56:32,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 220 states and 297 transitions. [2023-11-26 11:56:32,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2023-11-26 11:56:32,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2023-11-26 11:56:32,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 297 transitions. [2023-11-26 11:56:32,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:32,326 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 297 transitions. [2023-11-26 11:56:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 297 transitions. [2023-11-26 11:56:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2023-11-26 11:56:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 112 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2023-11-26 11:56:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2023-11-26 11:56:32,351 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 223 transitions. [2023-11-26 11:56:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 11:56:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:56:32,352 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 21 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 13 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-26 11:56:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:32,641 INFO L93 Difference]: Finished difference Result 349 states and 503 transitions. [2023-11-26 11:56:32,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349 states and 503 transitions. [2023-11-26 11:56:32,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-26 11:56:32,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349 states to 339 states and 490 transitions. [2023-11-26 11:56:32,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2023-11-26 11:56:32,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2023-11-26 11:56:32,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 339 states and 490 transitions. [2023-11-26 11:56:32,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:32,667 INFO L218 hiAutomatonCegarLoop]: Abstraction has 339 states and 490 transitions. [2023-11-26 11:56:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states and 490 transitions. [2023-11-26 11:56:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 274. [2023-11-26 11:56:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 171 states have (on average 1.128654970760234) internal successors, (193), 174 states have internal predecessors, (193), 60 states have call successors, (72), 36 states have call predecessors, (72), 43 states have return successors, (136), 63 states have call predecessors, (136), 58 states have call successors, (136) [2023-11-26 11:56:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 401 transitions. [2023-11-26 11:56:32,707 INFO L240 hiAutomatonCegarLoop]: Abstraction has 274 states and 401 transitions. [2023-11-26 11:56:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:56:32,708 INFO L428 stractBuchiCegarLoop]: Abstraction has 274 states and 401 transitions. [2023-11-26 11:56:32,708 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 11:56:32,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 274 states and 401 transitions. [2023-11-26 11:56:32,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-26 11:56:32,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:56:32,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:56:32,714 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 7, 7, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2023-11-26 11:56:32,715 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 11:56:32,715 INFO L748 eck$LassoCheckResult]: Stem: 2992#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 2993#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2994#L29 assume !(main_~x~0#1 > 46); 2995#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 2999#$Ultimate##0 ~n := #in~n; 3035#L17 assume !(~n < 1); 3033#L19 assume !(1 == ~n); 3025#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3036#L17 assume !(~n < 1); 3135#L19 assume 1 == ~n;#res := 1; 3134#fibonacciFINAL assume true; 3131#fibonacciEXIT >#36#return; 3126#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3128#$Ultimate##0 ~n := #in~n; 3132#L17 assume ~n < 1;#res := 0; 3129#fibonacciFINAL assume true; 3125#fibonacciEXIT >#38#return; 3123#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3122#fibonacciFINAL assume true; 3121#fibonacciEXIT >#36#return; 3065#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3067#$Ultimate##0 ~n := #in~n; 3118#L17 assume !(~n < 1); 3114#L19 assume 1 == ~n;#res := 1; 3013#fibonacciFINAL assume true; 3064#fibonacciEXIT >#38#return; 3060#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3052#fibonacciFINAL assume true; 3041#fibonacciEXIT >#36#return; 3040#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3043#$Ultimate##0 ~n := #in~n; 3119#L17 assume !(~n < 1); 3115#L19 assume !(1 == ~n); 3116#L22 call #t~ret4 := fibonacci(~n - 1);< 3236#$Ultimate##0 ~n := #in~n; 3170#L17 assume !(~n < 1); 3171#L19 assume 1 == ~n;#res := 1; 3237#fibonacciFINAL assume true; 3234#fibonacciEXIT >#36#return; 3056#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3059#$Ultimate##0 ~n := #in~n; 3124#L17 assume ~n < 1;#res := 0; 3069#fibonacciFINAL assume true; 3055#fibonacciEXIT >#38#return; 3058#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3051#fibonacciFINAL assume true; 3039#fibonacciEXIT >#38#return; 3027#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3030#fibonacciFINAL assume true; 3024#fibonacciEXIT >#36#return; 3012#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3020#$Ultimate##0 ~n := #in~n; 3016#L17 assume !(~n < 1); 3010#L19 assume !(1 == ~n); 3015#L22 call #t~ret4 := fibonacci(~n - 1);< 3235#$Ultimate##0 ~n := #in~n; 3211#L17 assume !(~n < 1); 3212#L19 assume !(1 == ~n); 3194#L22 call #t~ret4 := fibonacci(~n - 1);< 3197#$Ultimate##0 [2023-11-26 11:56:32,715 INFO L750 eck$LassoCheckResult]: Loop: 3197#$Ultimate##0 ~n := #in~n; 3209#L17 assume !(~n < 1); 3207#L19 assume !(1 == ~n); 3192#L22 call #t~ret4 := fibonacci(~n - 1);< 3197#$Ultimate##0 [2023-11-26 11:56:32,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1406603621, now seen corresponding path program 4 times [2023-11-26 11:56:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:32,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466915512] [2023-11-26 11:56:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:32,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:32,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:32,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:32,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash 927648, now seen corresponding path program 2 times [2023-11-26 11:56:32,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:32,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133058312] [2023-11-26 11:56:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:32,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:32,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:56:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:32,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:56:32,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2055878970, now seen corresponding path program 5 times [2023-11-26 11:56:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180390710] [2023-11-26 11:56:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:32,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:56:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:56:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:56:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:56:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:56:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:56:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 110 proven. 115 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-26 11:56:33,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180390710] [2023-11-26 11:56:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180390710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:33,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972493205] [2023-11-26 11:56:33,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:56:33,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:33,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:33,191 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:33,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 11:56:33,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-26 11:56:33,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:56:33,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:56:33,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 109 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-26 11:56:33,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 121 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-26 11:56:34,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972493205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:34,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 16] total 21 [2023-11-26 11:56:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509953980] [2023-11-26 11:56:34,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:34,043 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:34,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:34,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:34,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:34,044 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:56:34,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:34,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:34,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration5_Loop [2023-11-26 11:56:34,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:34,045 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:34,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,048 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,051 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,061 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,109 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:34,110 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:56:34,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,112 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:34,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:34,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-26 11:56:34,148 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:56:34,148 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:56:34,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,158 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:34,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:34,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-26 11:56:34,185 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:56:34,185 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:56:34,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,196 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:56:34,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:34,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-26 11:56:34,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,233 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:56:34,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:56:34,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-26 11:56:34,273 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:56:34,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,282 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:56:34,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:56:34,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:56:34,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:56:34,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:56:34,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:56:34,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:56:34,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration5_Loop [2023-11-26 11:56:34,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:56:34,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:56:34,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 11:56:34,334 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:56:34,334 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:56:34,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,336 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-26 11:56:34,341 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 [2023-11-26 11:56:34,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:34,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:34,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:34,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:34,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:34,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:34,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:34,375 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:34,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,387 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,391 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 [2023-11-26 11:56:34,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:34,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:34,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:34,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:34,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:34,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-26 11:56:34,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:34,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:34,424 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:56:34,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,434 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,442 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 [2023-11-26 11:56:34,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:56:34,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:56:34,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:56:34,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:56:34,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:56:34,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-26 11:56:34,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:56:34,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:56:34,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:56:34,469 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 11:56:34,469 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 11:56:34,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:56:34,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:34,473 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:34,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:56:34,475 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:56:34,475 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:56:34,476 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2023-11-26 11:56:34,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-26 11:56:34,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:34,486 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:56:34,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:34,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 11:56:34,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:35,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:56:35,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:35,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:35,303 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-26 11:56:35,303 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:35,393 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 296 states and 427 transitions. Complement of second has 13 states. [2023-11-26 11:56:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-26 11:56:35,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-26 11:56:35,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:35,396 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:56:35,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:35,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 11:56:35,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:36,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:56:36,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:36,139 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-26 11:56:36,139 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:36,206 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 296 states and 427 transitions. Complement of second has 13 states. [2023-11-26 11:56:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-26 11:56:36,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-26 11:56:36,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:36,208 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:56:36,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:36,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 11:56:36,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:36,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:56:36,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:36,993 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-26 11:56:36,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:37,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 349 states and 484 transitions. Complement of second has 14 states. [2023-11-26 11:56:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:56:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-11-26 11:56:37,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-26 11:56:37,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:37,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 76 letters. Loop has 4 letters. [2023-11-26 11:56:37,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:37,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 72 letters. Loop has 8 letters. [2023-11-26 11:56:37,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:56:37,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349 states and 484 transitions. [2023-11-26 11:56:37,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-26 11:56:37,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349 states to 288 states and 417 transitions. [2023-11-26 11:56:37,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 138 [2023-11-26 11:56:37,134 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2023-11-26 11:56:37,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 288 states and 417 transitions. [2023-11-26 11:56:37,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:56:37,137 INFO L218 hiAutomatonCegarLoop]: Abstraction has 288 states and 417 transitions. [2023-11-26 11:56:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states and 417 transitions. [2023-11-26 11:56:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 280. [2023-11-26 11:56:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 176 states have (on average 1.125) internal successors, (198), 179 states have internal predecessors, (198), 61 states have call successors, (73), 37 states have call predecessors, (73), 43 states have return successors, (138), 63 states have call predecessors, (138), 59 states have call successors, (138) [2023-11-26 11:56:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 409 transitions. [2023-11-26 11:56:37,181 INFO L240 hiAutomatonCegarLoop]: Abstraction has 280 states and 409 transitions. [2023-11-26 11:56:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 11:56:37,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:56:37,183 INFO L87 Difference]: Start difference. First operand 280 states and 409 transitions. Second operand has 21 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 15 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-26 11:56:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:37,477 INFO L93 Difference]: Finished difference Result 408 states and 601 transitions. [2023-11-26 11:56:37,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 601 transitions. [2023-11-26 11:56:37,485 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:56:37,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 0 states and 0 transitions. [2023-11-26 11:56:37,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 11:56:37,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 11:56:37,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 11:56:37,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:56:37,486 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:56:37,486 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:56:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:56:37,487 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:56:37,487 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-26 11:56:37,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:56:37,488 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 11:56:37,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-26 11:56:37,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 11:56:37 BoogieIcfgContainer [2023-11-26 11:56:37,496 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 11:56:37,496 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:56:37,496 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:56:37,497 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:56:37,497 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:23" (3/4) ... [2023-11-26 11:56:37,499 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:56:37,500 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:56:37,501 INFO L158 Benchmark]: Toolchain (without parser) took 14592.35ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 93.1MB in the beginning and 138.6MB in the end (delta: -45.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:56:37,502 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:56:37,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.41ms. Allocated memory is still 140.5MB. Free memory was 93.1MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:56:37,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.12ms. Allocated memory is still 140.5MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:56:37,510 INFO L158 Benchmark]: Boogie Preprocessor took 32.77ms. Allocated memory is still 140.5MB. Free memory was 81.5MB in the beginning and 80.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:56:37,510 INFO L158 Benchmark]: RCFGBuilder took 383.13ms. Allocated memory is still 140.5MB. Free memory was 80.2MB in the beginning and 70.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:56:37,510 INFO L158 Benchmark]: BuchiAutomizer took 13908.22ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 70.6MB in the beginning and 138.6MB in the end (delta: -68.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:56:37,511 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 180.4MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:56:37,513 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 107.0MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.41ms. Allocated memory is still 140.5MB. Free memory was 93.1MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.12ms. Allocated memory is still 140.5MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.77ms. Allocated memory is still 140.5MB. Free memory was 81.5MB in the beginning and 80.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 383.13ms. Allocated memory is still 140.5MB. Free memory was 80.2MB in the beginning and 70.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 13908.22ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 70.6MB in the beginning and 138.6MB in the end (delta: -68.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 180.4MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.8s and 6 iterations. TraceHistogramMax:12. Analysis of lassos took 7.0s. Construction of modules took 0.7s. Büchi inclusion checks took 5.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 151 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 423 mSDsluCounter, 403 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 653 IncrementalHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 311 mSolverCounterUnsat, 161 mSDtfsCounter, 653 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp94 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq173 hnf95 smp62 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-26 11:56:37,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:37,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-26 11:56:37,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-26 11:56:38,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7eb5211f-d1ac-4e25-a7ea-8a2289a4cb98/bin/uautomizer-verify-VRDe98Ueme/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