./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 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_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya --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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:36:28,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:36:28,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 01:36:28,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:36:28,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:36:28,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:36:28,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:36:28,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:36:28,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:36:28,947 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:36:28,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:36:28,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:36:28,949 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:36:28,950 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 01:36:28,950 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 01:36:28,951 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 01:36:28,951 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 01:36:28,952 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 01:36:28,952 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 01:36:28,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:36:28,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 01:36:28,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:36:28,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:36:28,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:36:28,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:36:28,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 01:36:28,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 01:36:28,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 01:36:28,957 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:36:28,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:36:28,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:36:28,958 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 01:36:28,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:36:28,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:36:28,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:36:28,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:36:28,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:36:28,961 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 01:36:28,961 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_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2023-11-29 01:36:29,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:36:29,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:36:29,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:36:29,216 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:36:29,216 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:36:29,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2023-11-29 01:36:31,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:36:32,146 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:36:32,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2023-11-29 01:36:32,153 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/data/29ef11baa/e1440ec470bb4d9bb36e42ad6429865c/FLAGde0dcb2ed [2023-11-29 01:36:32,167 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/data/29ef11baa/e1440ec470bb4d9bb36e42ad6429865c [2023-11-29 01:36:32,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:36:32,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:36:32,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:36:32,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:36:32,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:36:32,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f55c0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32, skipping insertion in model container [2023-11-29 01:36:32,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:36:32,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:36:32,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:36:32,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:36:32,378 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:36:32,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32 WrapperNode [2023-11-29 01:36:32,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:36:32,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:36:32,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:36:32,379 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:36:32,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,409 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-29 01:36:32,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:36:32,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:36:32,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:36:32,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:36:32,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,434 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]. [2023-11-29 01:36:32,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:36:32,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:36:32,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:36:32,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:36:32,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (1/1) ... [2023-11-29 01:36:32,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:32,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:32,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:32,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 01:36:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:36:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:36:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:36:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:36:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-11-29 01:36:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-11-29 01:36:32,566 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:36:32,569 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:36:32,663 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:36:32,672 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:36:32,673 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:36:32,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:36:32 BoogieIcfgContainer [2023-11-29 01:36:32,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:36:32,676 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 01:36:32,676 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 01:36:32,680 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 01:36:32,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 01:36:32,682 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 01:36:32" (1/3) ... [2023-11-29 01:36:32,683 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30eee36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 01:36:32, skipping insertion in model container [2023-11-29 01:36:32,683 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 01:36:32,683 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:36:32" (2/3) ... [2023-11-29 01:36:32,684 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30eee36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 01:36:32, skipping insertion in model container [2023-11-29 01:36:32,684 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 01:36:32,684 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:36:32" (3/3) ... [2023-11-29 01:36:32,686 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2023-11-29 01:36:32,740 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 01:36:32,740 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 01:36:32,740 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 01:36:32,740 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 01:36:32,740 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 01:36:32,741 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 01:36:32,741 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 01:36:32,741 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 01:36:32,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:36:32,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:32,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:32,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:32,772 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 01:36:32,772 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 01:36:32,772 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 01:36:32,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:36:32,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:32,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:32,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:32,775 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 01:36:32,776 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 01:36:32,783 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2023-11-29 01:36:32,783 INFO L750 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2023-11-29 01:36:32,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2023-11-29 01:36:32,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:32,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714012439] [2023-11-29 01:36:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:32,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:32,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:36:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:32,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:36:32,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2023-11-29 01:36:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776703060] [2023-11-29 01:36:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:32,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:32,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:36:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:32,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:36:32,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2023-11-29 01:36:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267710875] [2023-11-29 01:36:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:32,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:36:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:32,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:36:33,070 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 01:36:33,070 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 01:36:33,070 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 01:36:33,071 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 01:36:33,071 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 01:36:33,071 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,071 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 01:36:33,071 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 01:36:33,071 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2023-11-29 01:36:33,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 01:36:33,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 01:36:33,084 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,096 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,099 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,169 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 01:36:33,170 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 01:36:33,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 01:36:33,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:33,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:33,204 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:33,204 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:33,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:33,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 01:36:33,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:33,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:33,236 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:33,236 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:33,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 01:36:33,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 01:36:33,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:33,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:33,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:33,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:33,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 01:36:33,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 01:36:33,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:33,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:33,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 01:36:33,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 01:36:33,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 01:36:33,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:33,377 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 01:36:33,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 01:36:33,381 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 01:36:33,381 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 01:36:33,381 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 01:36:33,381 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 01:36:33,381 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 01:36:33,381 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,381 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 01:36:33,381 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 01:36:33,382 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2023-11-29 01:36:33,382 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 01:36:33,382 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 01:36:33,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,387 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,390 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,402 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:33,452 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 01:36:33,457 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 01:36:33,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 01:36:33,463 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 [2023-11-29 01:36:33,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:33,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:33,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:33,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:33,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:33,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:33,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:33,482 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:33,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 01:36:33,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 01:36:33,490 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 [2023-11-29 01:36:33,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:33,503 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:33,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:33,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:33,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:33,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:33,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:33,506 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:33,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:33,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 01:36:33,514 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 [2023-11-29 01:36:33,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:33,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:33,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:33,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:33,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:33,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:33,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:33,530 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:33,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 01:36:33,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 01:36:33,538 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 [2023-11-29 01:36:33,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:33,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:33,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:33,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:33,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:33,569 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:33,569 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:33,574 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 01:36:33,577 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 01:36:33,578 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 01:36:33,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:33,609 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:33,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 01:36:33,611 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 01:36:33,611 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 01:36:33,611 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 01:36:33,612 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2023-11-29 01:36:33,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 01:36:33,618 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 01:36:33,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 01:36:33,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:33,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:36:33,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:33,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:36:33,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:33,797 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 [2023-11-29 01:36:33,799 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:33,896 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 61 transitions. Complement of second has 12 states. [2023-11-29 01:36:33,899 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 [2023-11-29 01:36:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-11-29 01:36:33,905 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-29 01:36:33,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:33,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-29 01:36:33,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:33,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 01:36:33,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:33,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2023-11-29 01:36:33,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:33,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 25 states and 34 transitions. [2023-11-29 01:36:33,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-29 01:36:33,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-29 01:36:33,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2023-11-29 01:36:33,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:33,920 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-11-29 01:36:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2023-11-29 01:36:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2023-11-29 01:36:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 01:36:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-11-29 01:36:33,948 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-29 01:36:33,948 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-29 01:36:33,948 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 01:36:33,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2023-11-29 01:36:33,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:33,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:33,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:33,950 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:33,950 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:33,951 INFO L748 eck$LassoCheckResult]: Stem: 138#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 124#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 127#L13 call #t~ret4 := fibo(~n - 1);< 126#$Ultimate##0 ~n := #in~n; 128#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#35#return; 130#L13-1 [2023-11-29 01:36:33,951 INFO L750 eck$LassoCheckResult]: Loop: 130#L13-1 call #t~ret5 := fibo(~n - 2);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume !(~n < 1); 142#L10 assume !(1 == ~n); 129#L13 call #t~ret4 := fibo(~n - 1);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume ~n < 1;#res := 0; 133#fiboFINAL assume true; 140#fiboEXIT >#35#return; 130#L13-1 [2023-11-29 01:36:33,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2023-11-29 01:36:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760455832] [2023-11-29 01:36:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 01:36:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:36:34,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760455832] [2023-11-29 01:36:34,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760455832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:34,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:34,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759835195] [2023-11-29 01:36:34,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:34,086 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 01:36:34,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2023-11-29 01:36:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:34,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625767774] [2023-11-29 01:36:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:36:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:36:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625767774] [2023-11-29 01:36:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625767774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:34,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:34,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705335549] [2023-11-29 01:36:34,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:34,158 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 01:36:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:36:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:36:34,162 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:36:34,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:34,228 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-11-29 01:36:34,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2023-11-29 01:36:34,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:34,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2023-11-29 01:36:34,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-29 01:36:34,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-29 01:36:34,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2023-11-29 01:36:34,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:34,233 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 01:36:34,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2023-11-29 01:36:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-29 01:36:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 01:36:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-29 01:36:34,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 01:36:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:36:34,239 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 01:36:34,239 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 01:36:34,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2023-11-29 01:36:34,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:34,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:34,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:34,241 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:34,241 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:34,241 INFO L748 eck$LassoCheckResult]: Stem: 209#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 210#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 197#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 196#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 212#L10 assume !(1 == ~n); 200#L13 call #t~ret4 := fibo(~n - 1);< 199#$Ultimate##0 ~n := #in~n; 201#L8 assume !(~n < 1); 211#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 216#fiboEXIT >#35#return; 203#L13-1 [2023-11-29 01:36:34,241 INFO L750 eck$LassoCheckResult]: Loop: 203#L13-1 call #t~ret5 := fibo(~n - 2);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume !(1 == ~n); 204#L13 call #t~ret4 := fibo(~n - 1);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume 1 == ~n;#res := 1; 218#fiboFINAL assume true; 214#fiboEXIT >#35#return; 203#L13-1 [2023-11-29 01:36:34,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2023-11-29 01:36:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491245686] [2023-11-29 01:36:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 01:36:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:34,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491245686] [2023-11-29 01:36:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491245686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909296564] [2023-11-29 01:36:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:34,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:34,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,328 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:36:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:36:34,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:34,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909296564] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:34,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:34,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-29 01:36:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045558476] [2023-11-29 01:36:34,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:34,499 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 01:36:34,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2023-11-29 01:36:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:34,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370342273] [2023-11-29 01:36:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:34,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:34,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:36:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:34,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:36:34,637 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 01:36:34,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 01:36:34,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 01:36:34,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 01:36:34,637 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 01:36:34,637 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 01:36:34,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 01:36:34,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2023-11-29 01:36:34,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 01:36:34,638 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 01:36:34,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,642 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,644 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 01:36:34,689 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 01:36:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,690 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 01:36:34,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:34,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:34,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:34,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:34,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:34,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,714 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 01:36:34,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:34,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:34,728 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:34,728 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:34,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 01:36:34,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,732 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 01:36:34,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:34,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:34,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 01:36:34,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 01:36:34,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 01:36:34,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:34,765 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 01:36:34,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 01:36:34,772 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 01:36:34,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 01:36:34,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 01:36:34,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 01:36:34,772 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 01:36:34,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 01:36:34,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 01:36:34,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2023-11-29 01:36:34,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 01:36:34,773 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 01:36:34,773 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,778 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,789 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:34,829 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 01:36:34,829 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 01:36:34,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,831 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 01:36:34,834 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 [2023-11-29 01:36:34,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:34,846 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:34,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:34,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:34,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:34,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:34,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:34,850 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:34,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 01:36:34,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,855 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-29 01:36:34,861 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 [2023-11-29 01:36:34,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:34,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:34,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:34,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:34,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:34,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:34,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:34,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:34,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:34,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,882 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 01:36:34,885 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 [2023-11-29 01:36:34,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:34,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:34,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:34,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:34,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:34,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:34,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:34,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:34,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 01:36:34,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,905 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 01:36:34,911 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 [2023-11-29 01:36:34,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:34,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:34,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:34,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:34,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:34,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:34,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:34,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 01:36:34,927 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 01:36:34,927 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 01:36:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:34,928 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:34,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 01:36:34,930 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 01:36:34,930 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 01:36:34,930 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 01:36:34,930 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-29 01:36:34,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 01:36:34,934 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 01:36:34,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 01:36:34,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:34,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:36:35,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:35,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:36:35,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:35,194 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-29 01:36:35,195 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:36:35,404 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2023-11-29 01:36:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2023-11-29 01:36:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:36:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2023-11-29 01:36:35,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2023-11-29 01:36:35,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:35,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2023-11-29 01:36:35,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:35,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2023-11-29 01:36:35,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:35,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2023-11-29 01:36:35,416 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-29 01:36:35,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2023-11-29 01:36:35,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2023-11-29 01:36:35,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2023-11-29 01:36:35,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2023-11-29 01:36:35,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:35,422 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2023-11-29 01:36:35,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2023-11-29 01:36:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2023-11-29 01:36:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2023-11-29 01:36:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2023-11-29 01:36:35,438 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2023-11-29 01:36:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:36:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:36:35,440 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:36:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:35,555 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2023-11-29 01:36:35,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2023-11-29 01:36:35,559 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-29 01:36:35,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2023-11-29 01:36:35,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2023-11-29 01:36:35,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2023-11-29 01:36:35,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2023-11-29 01:36:35,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:35,565 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2023-11-29 01:36:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2023-11-29 01:36:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2023-11-29 01:36:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2023-11-29 01:36:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2023-11-29 01:36:35,577 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-29 01:36:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:36:35,578 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-29 01:36:35,578 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 01:36:35,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2023-11-29 01:36:35,581 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-29 01:36:35,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:35,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:35,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:35,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-29 01:36:35,584 INFO L748 eck$LassoCheckResult]: Stem: 820#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 821#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 805#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 806#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 825#L10 assume !(1 == ~n); 793#L13 call #t~ret4 := fibo(~n - 1);< 792#$Ultimate##0 ~n := #in~n; 794#L8 assume !(~n < 1); 831#L10 assume !(1 == ~n); 803#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 854#L8 assume !(~n < 1); 852#L10 assume 1 == ~n;#res := 1; 850#fiboFINAL assume true; 849#fiboEXIT >#35#return; 796#L13-1 call #t~ret5 := fibo(~n - 2);< 848#$Ultimate##0 ~n := #in~n; 822#L8 assume ~n < 1;#res := 0; 823#fiboFINAL assume true; 890#fiboEXIT >#37#return; 889#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 887#fiboFINAL assume true; 879#fiboEXIT >#35#return; 829#L13-1 [2023-11-29 01:36:35,584 INFO L750 eck$LassoCheckResult]: Loop: 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume ~n < 1;#res := 0; 885#fiboFINAL assume true; 883#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#35#return; 829#L13-1 [2023-11-29 01:36:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2023-11-29 01:36:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216428421] [2023-11-29 01:36:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:36:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:36:35,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:35,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216428421] [2023-11-29 01:36:35,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216428421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956372010] [2023-11-29 01:36:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:35,813 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:35,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:36:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:35,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:36:35,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:36:35,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:36:36,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956372010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:36,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:36,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2023-11-29 01:36:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142491686] [2023-11-29 01:36:36,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:36,179 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 01:36:36,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2033249087, now seen corresponding path program 1 times [2023-11-29 01:36:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658136710] [2023-11-29 01:36:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:36:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:36:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658136710] [2023-11-29 01:36:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658136710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096815697] [2023-11-29 01:36:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:36,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:36,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:36,314 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:36,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:36:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:36,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:36:36,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:36:36,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:36:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096815697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:36,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 01:36:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410798083] [2023-11-29 01:36:36,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:36,557 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 01:36:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:36:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:36:36,559 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 01:36:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:36,910 INFO L93 Difference]: Finished difference Result 174 states and 225 transitions. [2023-11-29 01:36:36,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 225 transitions. [2023-11-29 01:36:36,914 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2023-11-29 01:36:36,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 163 states and 214 transitions. [2023-11-29 01:36:36,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2023-11-29 01:36:36,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2023-11-29 01:36:36,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 214 transitions. [2023-11-29 01:36:36,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:36,921 INFO L218 hiAutomatonCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-29 01:36:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 214 transitions. [2023-11-29 01:36:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-29 01:36:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 108 states have internal predecessors, (117), 39 states have call successors, (40), 21 states have call predecessors, (40), 22 states have return successors, (57), 33 states have call predecessors, (57), 36 states have call successors, (57) [2023-11-29 01:36:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 214 transitions. [2023-11-29 01:36:36,936 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-29 01:36:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:36:36,937 INFO L428 stractBuchiCegarLoop]: Abstraction has 163 states and 214 transitions. [2023-11-29 01:36:36,938 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 01:36:36,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 214 transitions. [2023-11-29 01:36:36,940 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2023-11-29 01:36:36,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:36,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:36,943 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:36,943 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 6, 4, 4, 4, 4, 3, 3, 2, 2] [2023-11-29 01:36:36,943 INFO L748 eck$LassoCheckResult]: Stem: 1633#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 1634#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 1623#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1624#$Ultimate##0 ~n := #in~n; 1683#L8 assume !(~n < 1); 1684#L10 assume !(1 == ~n); 1607#L13 call #t~ret4 := fibo(~n - 1);< 1606#$Ultimate##0 ~n := #in~n; 1608#L8 assume !(~n < 1); 1632#L10 assume !(1 == ~n); 1615#L13 call #t~ret4 := fibo(~n - 1);< 1616#$Ultimate##0 ~n := #in~n; 1682#L8 assume !(~n < 1); 1681#L10 assume !(1 == ~n); 1618#L13 call #t~ret4 := fibo(~n - 1);< 1680#$Ultimate##0 ~n := #in~n; 1679#L8 assume !(~n < 1); 1678#L10 assume !(1 == ~n); 1674#L13 call #t~ret4 := fibo(~n - 1);< 1677#$Ultimate##0 ~n := #in~n; 1676#L8 assume !(~n < 1); 1675#L10 assume !(1 == ~n); 1670#L13 call #t~ret4 := fibo(~n - 1);< 1673#$Ultimate##0 ~n := #in~n; 1672#L8 assume !(~n < 1); 1671#L10 assume !(1 == ~n); 1660#L13 call #t~ret4 := fibo(~n - 1);< 1664#$Ultimate##0 ~n := #in~n; 1668#L8 assume !(~n < 1); 1666#L10 assume !(1 == ~n); 1659#L13 call #t~ret4 := fibo(~n - 1);< 1664#$Ultimate##0 ~n := #in~n; 1668#L8 assume !(~n < 1); 1666#L10 assume !(1 == ~n); 1659#L13 call #t~ret4 := fibo(~n - 1);< 1664#$Ultimate##0 ~n := #in~n; 1669#L8 assume !(~n < 1); 1667#L10 assume 1 == ~n;#res := 1; 1665#fiboFINAL assume true; 1663#fiboEXIT >#35#return; 1638#L13-1 call #t~ret5 := fibo(~n - 2);< 1661#$Ultimate##0 ~n := #in~n; 1755#L8 assume ~n < 1;#res := 0; 1751#fiboFINAL assume true; 1750#fiboEXIT >#37#return; 1748#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1746#fiboFINAL assume true; 1723#fiboEXIT >#35#return; 1710#L13-1 [2023-11-29 01:36:36,943 INFO L750 eck$LassoCheckResult]: Loop: 1710#L13-1 call #t~ret5 := fibo(~n - 2);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume 1 == ~n;#res := 1; 1740#fiboFINAL assume true; 1706#fiboEXIT >#35#return; 1714#L13-1 call #t~ret5 := fibo(~n - 2);< 1732#$Ultimate##0 ~n := #in~n; 1745#L8 assume ~n < 1;#res := 0; 1744#fiboFINAL assume true; 1754#fiboEXIT >#37#return; 1717#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1749#fiboFINAL assume true; 1724#fiboEXIT >#35#return; 1710#L13-1 call #t~ret5 := fibo(~n - 2);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume !(1 == ~n); 1707#L13 call #t~ret4 := fibo(~n - 1);< 1731#$Ultimate##0 ~n := #in~n; 1743#L8 assume !(~n < 1); 1739#L10 assume 1 == ~n;#res := 1; 1740#fiboFINAL assume true; 1706#fiboEXIT >#35#return; 1714#L13-1 call #t~ret5 := fibo(~n - 2);< 1732#$Ultimate##0 ~n := #in~n; 1745#L8 assume ~n < 1;#res := 0; 1744#fiboFINAL assume true; 1754#fiboEXIT >#37#return; 1717#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1749#fiboFINAL assume true; 1724#fiboEXIT >#37#return; 1715#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1764#fiboFINAL assume true; 1728#fiboEXIT >#35#return; 1710#L13-1 [2023-11-29 01:36:36,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash -683438758, now seen corresponding path program 2 times [2023-11-29 01:36:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:36,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523343459] [2023-11-29 01:36:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:36,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 01:36:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:36:37,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523343459] [2023-11-29 01:36:37,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523343459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:37,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699556491] [2023-11-29 01:36:37,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:36:37,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:37,257 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:37,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:36:37,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:36:37,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:36:37,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:36:37,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:36:37,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 155 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:36:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699556491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:37,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:37,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 23 [2023-11-29 01:36:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933892022] [2023-11-29 01:36:37,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:37,721 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 01:36:37,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1487778613, now seen corresponding path program 2 times [2023-11-29 01:36:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363708125] [2023-11-29 01:36:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:36:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:36:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 45 proven. 31 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:36:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363708125] [2023-11-29 01:36:37,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363708125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854648535] [2023-11-29 01:36:37,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:36:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:37,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:37,912 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:37,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:36:37,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:36:37,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:36:37,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:36:37,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 38 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-29 01:36:38,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 41 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:36:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854648535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:38,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:38,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 17 [2023-11-29 01:36:38,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901392983] [2023-11-29 01:36:38,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:38,397 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 01:36:38,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:38,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:36:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:36:38,398 INFO L87 Difference]: Start difference. First operand 163 states and 214 transitions. cyclomatic complexity: 57 Second operand has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 11 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-29 01:36:38,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:38,526 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2023-11-29 01:36:38,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 147 transitions. [2023-11-29 01:36:38,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-29 01:36:38,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 112 states and 140 transitions. [2023-11-29 01:36:38,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2023-11-29 01:36:38,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2023-11-29 01:36:38,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 140 transitions. [2023-11-29 01:36:38,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:38,533 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 140 transitions. [2023-11-29 01:36:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 140 transitions. [2023-11-29 01:36:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2023-11-29 01:36:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 24 states have call successors, (24), 16 states have call predecessors, (24), 12 states have return successors, (30), 19 states have call predecessors, (30), 21 states have call successors, (30) [2023-11-29 01:36:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2023-11-29 01:36:38,541 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 127 transitions. [2023-11-29 01:36:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:36:38,542 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 127 transitions. [2023-11-29 01:36:38,543 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 01:36:38,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 127 transitions. [2023-11-29 01:36:38,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-29 01:36:38,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:38,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:38,546 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 9, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 01:36:38,546 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-29 01:36:38,546 INFO L748 eck$LassoCheckResult]: Stem: 2642#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 2643#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 2632#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 2633#$Ultimate##0 ~n := #in~n; 2640#L8 assume !(~n < 1); 2641#L10 assume !(1 == ~n); 2620#L13 call #t~ret4 := fibo(~n - 1);< 2619#$Ultimate##0 ~n := #in~n; 2621#L8 assume !(~n < 1); 2695#L10 assume !(1 == ~n); 2636#L13 call #t~ret4 := fibo(~n - 1);< 2693#$Ultimate##0 ~n := #in~n; 2691#L8 assume !(~n < 1); 2689#L10 assume !(1 == ~n); 2683#L13 call #t~ret4 := fibo(~n - 1);< 2688#$Ultimate##0 ~n := #in~n; 2686#L8 assume !(~n < 1); 2685#L10 assume !(1 == ~n); 2675#L13 call #t~ret4 := fibo(~n - 1);< 2682#$Ultimate##0 ~n := #in~n; 2681#L8 assume !(~n < 1); 2680#L10 assume !(1 == ~n); 2655#L13 call #t~ret4 := fibo(~n - 1);< 2671#$Ultimate##0 ~n := #in~n; 2667#L8 assume !(~n < 1); 2665#L10 assume !(1 == ~n); 2627#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2651#L8 assume !(~n < 1); 2664#L10 assume !(1 == ~n); 2623#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2651#L8 assume !(~n < 1); 2664#L10 assume !(1 == ~n); 2623#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2651#L8 assume !(~n < 1); 2664#L10 assume !(1 == ~n); 2623#L13 call #t~ret4 := fibo(~n - 1);< 2650#$Ultimate##0 ~n := #in~n; 2648#L8 assume !(~n < 1); 2644#L10 assume 1 == ~n;#res := 1; 2645#fiboFINAL assume true; 2694#fiboEXIT >#35#return; 2638#L13-1 call #t~ret5 := fibo(~n - 2);< 2649#$Ultimate##0 ~n := #in~n; 2637#L8 assume ~n < 1;#res := 0; 2639#fiboFINAL assume true; 2698#fiboEXIT >#37#return; 2697#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2696#fiboFINAL assume true; 2658#fiboEXIT >#35#return; 2653#L13-1 call #t~ret5 := fibo(~n - 2);< 2652#$Ultimate##0 ~n := #in~n; 2654#L8 assume ~n < 1;#res := 0; 2672#fiboFINAL assume true; 2668#fiboEXIT >#37#return; 2622#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2630#fiboFINAL assume true; 2634#fiboEXIT >#35#return; 2625#L13-1 [2023-11-29 01:36:38,546 INFO L750 eck$LassoCheckResult]: Loop: 2625#L13-1 call #t~ret5 := fibo(~n - 2);< 2663#$Ultimate##0 ~n := #in~n; 2678#L8 assume !(~n < 1); 2679#L10 assume !(1 == ~n); 2628#L13 call #t~ret4 := fibo(~n - 1);< 2659#$Ultimate##0 ~n := #in~n; 2687#L8 assume !(~n < 1); 2679#L10 assume !(1 == ~n); 2628#L13 call #t~ret4 := fibo(~n - 1);< 2659#$Ultimate##0 ~n := #in~n; 2687#L8 assume !(~n < 1); 2679#L10 assume !(1 == ~n); 2628#L13 call #t~ret4 := fibo(~n - 1);< 2659#$Ultimate##0 ~n := #in~n; 2687#L8 assume !(~n < 1); 2679#L10 assume 1 == ~n;#res := 1; 2684#fiboFINAL assume true; 2674#fiboEXIT >#35#return; 2669#L13-1 call #t~ret5 := fibo(~n - 2);< 2670#$Ultimate##0 ~n := #in~n; 2677#L8 assume ~n < 1;#res := 0; 2672#fiboFINAL assume true; 2668#fiboEXIT >#37#return; 2666#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2660#fiboFINAL assume true; 2656#fiboEXIT >#35#return; 2653#L13-1 call #t~ret5 := fibo(~n - 2);< 2652#$Ultimate##0 ~n := #in~n; 2654#L8 assume ~n < 1;#res := 0; 2672#fiboFINAL assume true; 2668#fiboEXIT >#37#return; 2622#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2630#fiboFINAL assume true; 2634#fiboEXIT >#35#return; 2625#L13-1 [2023-11-29 01:36:38,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:38,547 INFO L85 PathProgramCache]: Analyzing trace with hash -590837852, now seen corresponding path program 3 times [2023-11-29 01:36:38,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:38,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627643047] [2023-11-29 01:36:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:38,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 01:36:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:36:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 23 proven. 195 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 01:36:38,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627643047] [2023-11-29 01:36:38,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627643047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314361081] [2023-11-29 01:36:38,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:36:38,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:38,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:38,914 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:38,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:36:38,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 01:36:38,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:36:38,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:36:38,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 11 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-29 01:36:39,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 64 proven. 13 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 01:36:39,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314361081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:39,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:39,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8, 9] total 29 [2023-11-29 01:36:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233676406] [2023-11-29 01:36:39,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:39,348 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 01:36:39,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1083596768, now seen corresponding path program 3 times [2023-11-29 01:36:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:39,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865590209] [2023-11-29 01:36:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:39,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:36:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:36:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:36:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865590209] [2023-11-29 01:36:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865590209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842284240] [2023-11-29 01:36:39,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:36:39,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:39,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:39,456 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:39,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:36:39,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 01:36:39,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:36:39,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:36:39,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 01:36:39,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:36:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842284240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:39,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2023-11-29 01:36:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177930040] [2023-11-29 01:36:39,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:39,806 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 01:36:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:36:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:36:39,807 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. cyclomatic complexity: 24 Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:39,879 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2023-11-29 01:36:39,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 123 transitions. [2023-11-29 01:36:39,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-29 01:36:39,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 123 transitions. [2023-11-29 01:36:39,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2023-11-29 01:36:39,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2023-11-29 01:36:39,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 123 transitions. [2023-11-29 01:36:39,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:39,884 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 123 transitions. [2023-11-29 01:36:39,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 123 transitions. [2023-11-29 01:36:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-29 01:36:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 24 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (28), 19 states have call predecessors, (28), 21 states have call successors, (28) [2023-11-29 01:36:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-11-29 01:36:39,891 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-29 01:36:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:36:39,892 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-29 01:36:39,892 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-29 01:36:39,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 121 transitions. [2023-11-29 01:36:39,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 01:36:39,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:36:39,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:36:39,895 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 11, 9, 9, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 01:36:39,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-29 01:36:39,896 INFO L748 eck$LassoCheckResult]: Stem: 3565#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 3566#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 3560#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3561#$Ultimate##0 ~n := #in~n; 3627#L8 assume !(~n < 1); 3626#L10 assume !(1 == ~n); 3555#L13 call #t~ret4 := fibo(~n - 1);< 3625#$Ultimate##0 ~n := #in~n; 3639#L8 assume !(~n < 1); 3638#L10 assume !(1 == ~n); 3550#L13 call #t~ret4 := fibo(~n - 1);< 3549#$Ultimate##0 ~n := #in~n; 3551#L8 assume !(~n < 1); 3641#L10 assume !(1 == ~n); 3571#L13 call #t~ret4 := fibo(~n - 1);< 3635#$Ultimate##0 ~n := #in~n; 3570#L8 assume !(~n < 1); 3572#L10 assume !(1 == ~n); 3575#L13 call #t~ret4 := fibo(~n - 1);< 3617#$Ultimate##0 ~n := #in~n; 3628#L8 assume !(~n < 1); 3623#L10 assume !(1 == ~n); 3584#L13 call #t~ret4 := fibo(~n - 1);< 3609#$Ultimate##0 ~n := #in~n; 3644#L8 assume !(~n < 1); 3643#L10 assume !(1 == ~n); 3558#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3580#L8 assume !(~n < 1); 3593#L10 assume !(1 == ~n); 3557#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3580#L8 assume !(~n < 1); 3593#L10 assume !(1 == ~n); 3557#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3580#L8 assume !(~n < 1); 3593#L10 assume !(1 == ~n); 3557#L13 call #t~ret4 := fibo(~n - 1);< 3579#$Ultimate##0 ~n := #in~n; 3578#L8 assume !(~n < 1); 3573#L10 assume 1 == ~n;#res := 1; 3574#fiboFINAL assume true; 3633#fiboEXIT >#35#return; 3564#L13-1 call #t~ret5 := fibo(~n - 2);< 3576#$Ultimate##0 ~n := #in~n; 3642#L8 assume ~n < 1;#res := 0; 3640#fiboFINAL assume true; 3563#fiboEXIT >#37#return; 3556#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3559#fiboFINAL assume true; 3562#fiboEXIT >#35#return; 3582#L13-1 call #t~ret5 := fibo(~n - 2);< 3581#$Ultimate##0 ~n := #in~n; 3583#L8 assume !(~n < 1); 3603#L10 assume 1 == ~n;#res := 1; 3592#fiboFINAL assume true; 3599#fiboEXIT >#37#return; 3586#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3604#fiboFINAL assume true; 3601#fiboEXIT >#35#return; 3543#L13-1 [2023-11-29 01:36:39,896 INFO L750 eck$LassoCheckResult]: Loop: 3543#L13-1 call #t~ret5 := fibo(~n - 2);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume !(1 == ~n); 3547#L13 call #t~ret4 := fibo(~n - 1);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume !(1 == ~n); 3547#L13 call #t~ret4 := fibo(~n - 1);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume !(1 == ~n); 3547#L13 call #t~ret4 := fibo(~n - 1);< 3542#$Ultimate##0 ~n := #in~n; 3546#L8 assume !(~n < 1); 3591#L10 assume 1 == ~n;#res := 1; 3592#fiboFINAL assume true; 3599#fiboEXIT >#35#return; 3596#L13-1 call #t~ret5 := fibo(~n - 2);< 3597#$Ultimate##0 ~n := #in~n; 3600#L8 assume ~n < 1;#res := 0; 3598#fiboFINAL assume true; 3595#fiboEXIT >#37#return; 3594#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3588#fiboFINAL assume true; 3585#fiboEXIT >#35#return; 3582#L13-1 call #t~ret5 := fibo(~n - 2);< 3581#$Ultimate##0 ~n := #in~n; 3583#L8 assume !(~n < 1); 3603#L10 assume 1 == ~n;#res := 1; 3592#fiboFINAL assume true; 3599#fiboEXIT >#37#return; 3586#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3604#fiboFINAL assume true; 3601#fiboEXIT >#35#return; 3543#L13-1 [2023-11-29 01:36:39,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash -397079941, now seen corresponding path program 4 times [2023-11-29 01:36:39,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:39,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871495778] [2023-11-29 01:36:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:39,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:39,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:36:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:39,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:36:39,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -29214273, now seen corresponding path program 4 times [2023-11-29 01:36:39,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:39,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877330027] [2023-11-29 01:36:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:39,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:36:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:36:39,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:36:39,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1407070971, now seen corresponding path program 5 times [2023-11-29 01:36:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867289724] [2023-11-29 01:36:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:39,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 01:36:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:36:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:36:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:36:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:36:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:36:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 165 proven. 250 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-29 01:36:40,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:40,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867289724] [2023-11-29 01:36:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867289724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:40,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931549434] [2023-11-29 01:36:40,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:36:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:40,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:40,271 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:40,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:36:40,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 01:36:40,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:36:40,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:36:40,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 139 proven. 84 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-29 01:36:40,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 139 proven. 86 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-11-29 01:36:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931549434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:40,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10, 11] total 31 [2023-11-29 01:36:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892452194] [2023-11-29 01:36:40,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:41,119 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 01:36:41,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 01:36:41,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 01:36:41,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 01:36:41,120 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 01:36:41,120 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,120 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 01:36:41,120 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 01:36:41,120 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration7_Loop [2023-11-29 01:36:41,120 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 01:36:41,120 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 01:36:41,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,126 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,129 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,133 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 01:36:41,167 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 01:36:41,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,171 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 01:36:41,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:41,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:41,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:41,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=2} Honda state: {fibo_#t~ret4=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:41,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-29 01:36:41,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,198 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 01:36:41,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:41,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:41,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:41,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:41,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-29 01:36:41,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,217 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 01:36:41,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:41,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:41,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 01:36:41,235 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 01:36:41,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 01:36:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,240 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-29 01:36:41,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 01:36:41,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:41,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-11-29 01:36:41,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,267 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-29 01:36:41,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 01:36:41,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 01:36:41,284 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 01:36:41,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:41,288 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 01:36:41,288 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 01:36:41,288 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 01:36:41,288 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 01:36:41,288 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 01:36:41,288 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,288 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 01:36:41,288 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 01:36:41,288 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration7_Loop [2023-11-29 01:36:41,288 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 01:36:41,288 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 01:36:41,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,293 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 01:36:41,328 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 01:36:41,328 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 01:36:41,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,329 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-29 01:36:41,331 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 [2023-11-29 01:36:41,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:41,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:41,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:41,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:41,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:41,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:41,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:41,344 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:41,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-29 01:36:41,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,347 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-29 01:36:41,349 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 [2023-11-29 01:36:41,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:41,359 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:41,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:41,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:41,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:41,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:41,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:41,361 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 01:36:41,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:41,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,365 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-29 01:36:41,367 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 [2023-11-29 01:36:41,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 01:36:41,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 01:36:41,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 01:36:41,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 01:36:41,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 01:36:41,378 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 01:36:41,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 01:36:41,381 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 01:36:41,383 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 01:36:41,384 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 01:36:41,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:36:41,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:41,385 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:36:41,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-29 01:36:41,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 01:36:41,387 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 01:36:41,387 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 01:36:41,387 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-29 01:36:41,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-29 01:36:41,390 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 01:36:41,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:41,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:36:41,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:41,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:41,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:36:41,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:36:41,959 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-29 01:36:41,959 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:42,045 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 110 states and 128 transitions. Complement of second has 11 states. [2023-11-29 01:36:42,047 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 [2023-11-29 01:36:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2023-11-29 01:36:42,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 61 letters. Loop has 35 letters. [2023-11-29 01:36:42,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:42,049 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 01:36:42,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:42,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:36:42,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:42,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:36:42,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:36:42,623 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-29 01:36:42,623 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:42,720 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 110 states and 128 transitions. Complement of second has 11 states. [2023-11-29 01:36:42,724 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 [2023-11-29 01:36:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2023-11-29 01:36:42,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 61 letters. Loop has 35 letters. [2023-11-29 01:36:42,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:42,726 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 01:36:42,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:42,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:36:42,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:43,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:36:43,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:36:43,279 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-29 01:36:43,279 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:43,550 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 121 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Result 485 states and 609 transitions. Complement of second has 142 states. [2023-11-29 01:36:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2023-11-29 01:36:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 7 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 01:36:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 52 transitions. [2023-11-29 01:36:43,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 61 letters. Loop has 35 letters. [2023-11-29 01:36:43,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:43,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 96 letters. Loop has 35 letters. [2023-11-29 01:36:43,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:43,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 52 transitions. Stem has 61 letters. Loop has 70 letters. [2023-11-29 01:36:43,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 01:36:43,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 485 states and 609 transitions. [2023-11-29 01:36:43,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-29 01:36:43,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 485 states to 345 states and 434 transitions. [2023-11-29 01:36:43,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2023-11-29 01:36:43,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 148 [2023-11-29 01:36:43,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 345 states and 434 transitions. [2023-11-29 01:36:43,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 01:36:43,576 INFO L218 hiAutomatonCegarLoop]: Abstraction has 345 states and 434 transitions. [2023-11-29 01:36:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states and 434 transitions. [2023-11-29 01:36:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2023-11-29 01:36:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 202 states have (on average 1.0891089108910892) internal successors, (220), 210 states have internal predecessors, (220), 75 states have call successors, (75), 44 states have call predecessors, (75), 46 states have return successors, (98), 68 states have call predecessors, (98), 67 states have call successors, (98) [2023-11-29 01:36:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 393 transitions. [2023-11-29 01:36:43,594 INFO L240 hiAutomatonCegarLoop]: Abstraction has 323 states and 393 transitions. [2023-11-29 01:36:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:36:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:36:43,595 INFO L87 Difference]: Start difference. First operand 323 states and 393 transitions. Second operand has 32 states, 29 states have (on average 2.0) internal successors, (58), 23 states have internal predecessors, (58), 14 states have call successors, (21), 9 states have call predecessors, (21), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-29 01:36:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:44,314 INFO L93 Difference]: Finished difference Result 566 states and 704 transitions. [2023-11-29 01:36:44,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 566 states and 704 transitions. [2023-11-29 01:36:44,321 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 01:36:44,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 566 states to 0 states and 0 transitions. [2023-11-29 01:36:44,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 01:36:44,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 01:36:44,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 01:36:44,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:36:44,322 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 01:36:44,322 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 01:36:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 01:36:44,322 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 01:36:44,323 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-29 01:36:44,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 01:36:44,323 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 01:36:44,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 01:36:44,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 01:36:44 BoogieIcfgContainer [2023-11-29 01:36:44,328 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 01:36:44,329 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:36:44,329 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:36:44,329 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:36:44,329 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:36:32" (3/4) ... [2023-11-29 01:36:44,331 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:36:44,331 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:36:44,332 INFO L158 Benchmark]: Toolchain (without parser) took 12161.60ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 124.8MB in the beginning and 78.7MB in the end (delta: 46.1MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2023-11-29 01:36:44,332 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:36:44,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.61ms. Allocated memory is still 157.3MB. Free memory was 124.8MB in the beginning and 114.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:36:44,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.61ms. Allocated memory is still 157.3MB. Free memory was 114.9MB in the beginning and 113.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:36:44,333 INFO L158 Benchmark]: Boogie Preprocessor took 31.87ms. Allocated memory is still 157.3MB. Free memory was 113.8MB in the beginning and 111.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:36:44,333 INFO L158 Benchmark]: RCFGBuilder took 232.14ms. Allocated memory is still 157.3MB. Free memory was 111.8MB in the beginning and 102.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:36:44,333 INFO L158 Benchmark]: BuchiAutomizer took 11652.31ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 102.4MB in the beginning and 78.7MB in the end (delta: 23.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2023-11-29 01:36:44,333 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 190.8MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:36:44,335 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.61ms. Allocated memory is still 157.3MB. Free memory was 124.8MB in the beginning and 114.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.61ms. Allocated memory is still 157.3MB. Free memory was 114.9MB in the beginning and 113.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.87ms. Allocated memory is still 157.3MB. Free memory was 113.8MB in the beginning and 111.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 232.14ms. Allocated memory is still 157.3MB. Free memory was 111.8MB in the beginning and 102.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 11652.31ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 102.4MB in the beginning and 78.7MB in the end (delta: 23.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 190.8MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (6 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. 6 modules have a trivial ranking function, the largest among these consists of 32 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.5s and 8 iterations. TraceHistogramMax:12. Analysis of lassos took 6.9s. Construction of modules took 0.9s. Büchi inclusion checks took 3.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 8. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 32/70 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 476 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 455 mSDsluCounter, 564 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1436 IncrementalHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 357 mSolverCounterUnsat, 163 mSDtfsCounter, 1436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf90 smp88 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-29 01:36:44,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:36:44,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 01:36:44,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:44,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:45,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:45,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:45,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:45,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:45,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a3b22b9-b7a2-49ed-984b-ee7e7854b839/bin/uautomizer-verify-BQ2R08f2Ya/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