./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:14:01,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:14:01,533 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:14:01,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:14:01,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:14:01,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:14:01,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:14:01,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:14:01,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:14:01,564 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:14:01,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:14:01,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:14:01,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:14:01,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:14:01,565 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:14:01,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:14:01,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:14:01,565 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:14:01,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:14:01,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:14:01,567 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:14:01,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:14:01,567 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:14:01,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:14:01,567 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:14:01,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:14:01,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:14:01,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:14:01,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:14:01,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:14:01,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:14:01,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:14:01,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:14:01,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:14:01,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:14:01,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:14:01,569 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:14:01,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:14:01,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:14:01,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:14:01,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:14:01,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:14:01,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:14:01,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:14:01,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB 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(G ! overflow) ) 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 -> 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 [2024-11-28 04:14:01,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:14:01,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:14:01,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:14:01,920 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:14:01,921 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:14:01,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive/Fibonacci01-1.c [2024-11-28 04:14:04,876 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/data/2e2318a2a/f43854c3ce094c15a6df9a7c468beb1a/FLAG9012e48a2 [2024-11-28 04:14:05,096 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:14:05,096 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/sv-benchmarks/c/recursive/Fibonacci01-1.c [2024-11-28 04:14:05,103 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/data/2e2318a2a/f43854c3ce094c15a6df9a7c468beb1a/FLAG9012e48a2 [2024-11-28 04:14:05,455 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/data/2e2318a2a/f43854c3ce094c15a6df9a7c468beb1a [2024-11-28 04:14:05,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:14:05,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:14:05,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:14:05,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:14:05,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:14:05,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7066ebfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05, skipping insertion in model container [2024-11-28 04:14:05,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:14:05,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:14:05,680 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:14:05,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:14:05,721 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:14:05,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05 WrapperNode [2024-11-28 04:14:05,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:14:05,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:14:05,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:14:05,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:14:05,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,759 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2024-11-28 04:14:05,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:14:05,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:14:05,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:14:05,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:14:05,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,796 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]. [2024-11-28 04:14:05,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,802 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:14:05,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:14:05,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:14:05,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:14:05,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (1/1) ... [2024-11-28 04:14:05,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:14:05,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:05,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:14:05,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:14:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-28 04:14:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-28 04:14:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:14:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:14:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:14:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:14:05,950 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:14:05,953 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:14:06,115 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-28 04:14:06,116 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:14:06,126 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:14:06,127 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:14:06,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:14:06 BoogieIcfgContainer [2024-11-28 04:14:06,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:14:06,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:14:06,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:14:06,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:14:06,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:14:05" (1/3) ... [2024-11-28 04:14:06,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479a0e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:14:06, skipping insertion in model container [2024-11-28 04:14:06,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:14:05" (2/3) ... [2024-11-28 04:14:06,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479a0e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:14:06, skipping insertion in model container [2024-11-28 04:14:06,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:14:06" (3/3) ... [2024-11-28 04:14:06,139 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2024-11-28 04:14:06,156 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:14:06,159 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci01-1.c that has 2 procedures, 36 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2024-11-28 04:14:06,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:14:06,247 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c0b3dd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:14:06,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-28 04:14:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 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) [2024-11-28 04:14:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:14:06,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:06,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:06,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:06,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:06,265 INFO L85 PathProgramCache]: Analyzing trace with hash 632723839, now seen corresponding path program 1 times [2024-11-28 04:14:06,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:06,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669883897] [2024-11-28 04:14:06,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:06,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:06,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669883897] [2024-11-28 04:14:06,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669883897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:06,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:14:06,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:14:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527145844] [2024-11-28 04:14:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:06,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:14:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:06,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:14:06,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:14:06,531 INFO L87 Difference]: Start difference. First operand has 36 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 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 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:06,594 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-28 04:14:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:14:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:14:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:06,605 INFO L225 Difference]: With dead ends: 41 [2024-11-28 04:14:06,605 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:14:06,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:14:06,614 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:06,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:14:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:14:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-28 04:14:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 23 states have internal predecessors, (25), 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) [2024-11-28 04:14:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 04:14:06,667 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 8 [2024-11-28 04:14:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:06,667 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 04:14:06,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-28 04:14:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:14:06,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:06,669 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:06,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:14:06,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:06,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1860397429, now seen corresponding path program 1 times [2024-11-28 04:14:06,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:06,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188979849] [2024-11-28 04:14:06,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:06,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188979849] [2024-11-28 04:14:06,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188979849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:06,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:14:06,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:14:06,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069545056] [2024-11-28 04:14:06,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:06,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:14:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:06,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:14:06,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:14:06,774 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:06,901 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-28 04:14:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:14:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:14:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:06,902 INFO L225 Difference]: With dead ends: 30 [2024-11-28 04:14:06,902 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 04:14:06,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:14:06,904 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:06,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 35 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:14:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 04:14:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-28 04:14:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 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) [2024-11-28 04:14:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-28 04:14:06,914 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2024-11-28 04:14:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:06,915 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-28 04:14:06,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-28 04:14:06,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:14:06,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:06,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:06,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:14:06,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:06,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1838116578, now seen corresponding path program 1 times [2024-11-28 04:14:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:06,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933984865] [2024-11-28 04:14:06,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933984865] [2024-11-28 04:14:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933984865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:07,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:14:07,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:14:07,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873859631] [2024-11-28 04:14:07,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:07,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:14:07,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:07,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:14:07,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:14:07,040 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:14:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:07,054 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-28 04:14:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:14:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-28 04:14:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:07,059 INFO L225 Difference]: With dead ends: 24 [2024-11-28 04:14:07,060 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 04:14:07,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:14:07,062 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:07,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:14:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 04:14:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-28 04:14:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-28 04:14:07,070 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2024-11-28 04:14:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:07,088 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-28 04:14:07,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:14:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-28 04:14:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 04:14:07,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:07,089 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:07,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:14:07,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:07,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1084830083, now seen corresponding path program 1 times [2024-11-28 04:14:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883747643] [2024-11-28 04:14:07,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:14:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:07,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883747643] [2024-11-28 04:14:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883747643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:14:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:14:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996465414] [2024-11-28 04:14:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:07,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:14:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:07,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:14:07,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:14:07,322 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:07,384 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-28 04:14:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:14:07,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-28 04:14:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:07,385 INFO L225 Difference]: With dead ends: 35 [2024-11-28 04:14:07,386 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 04:14:07,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:14:07,387 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:07,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:14:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 04:14:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-28 04:14:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:14:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-28 04:14:07,404 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 30 [2024-11-28 04:14:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:07,405 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-28 04:14:07,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-28 04:14:07,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:14:07,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:07,406 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:07,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:14:07,406 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:07,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1634885931, now seen corresponding path program 1 times [2024-11-28 04:14:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:07,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16799417] [2024-11-28 04:14:07,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:07,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:14:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16799417] [2024-11-28 04:14:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16799417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379487037] [2024-11-28 04:14:07,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:07,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:07,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:07,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:07,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:14:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:07,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:14:07,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:14:07,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:14:08,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379487037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:08,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:08,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-28 04:14:08,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950931798] [2024-11-28 04:14:08,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:08,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:14:08,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:08,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:14:08,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:14:08,010 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:14:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:08,412 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-11-28 04:14:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:14:08,413 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2024-11-28 04:14:08,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:08,414 INFO L225 Difference]: With dead ends: 91 [2024-11-28 04:14:08,414 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 04:14:08,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:14:08,416 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:08,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 106 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:14:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 04:14:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2024-11-28 04:14:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 04:14:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-28 04:14:08,436 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 25 [2024-11-28 04:14:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:08,436 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-28 04:14:08,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:14:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-28 04:14:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:14:08,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:08,438 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:08,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:14:08,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:08,639 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:08,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:08,639 INFO L85 PathProgramCache]: Analyzing trace with hash 123521023, now seen corresponding path program 2 times [2024-11-28 04:14:08,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:08,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970958106] [2024-11-28 04:14:08,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:08,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:08,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:08,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:14:08,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:08,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970958106] [2024-11-28 04:14:08,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970958106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:08,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529594075] [2024-11-28 04:14:08,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:08,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:08,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:08,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:14:08,816 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:08,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:08,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:14:08,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:14:08,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:14:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529594075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:08,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:14:08,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:14:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023243543] [2024-11-28 04:14:08,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:08,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:14:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:08,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:14:08,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:14:08,884 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:08,925 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-28 04:14:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:14:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 04:14:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:08,929 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:14:08,930 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 04:14:08,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:14:08,931 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:08,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:14:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 04:14:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-28 04:14:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 04:14:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-28 04:14:08,956 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2024-11-28 04:14:08,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:08,957 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-28 04:14:08,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-28 04:14:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 04:14:08,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:08,958 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:08,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:14:09,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:09,159 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:09,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:09,159 INFO L85 PathProgramCache]: Analyzing trace with hash -465815529, now seen corresponding path program 1 times [2024-11-28 04:14:09,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:09,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538971007] [2024-11-28 04:14:09,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:09,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:14:09,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538971007] [2024-11-28 04:14:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538971007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399888146] [2024-11-28 04:14:09,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:09,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:09,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:09,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:09,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:14:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:09,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:14:09,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:14:09,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:14:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399888146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:09,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:14:09,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 04:14:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397584594] [2024-11-28 04:14:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:09,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:14:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:09,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:14:09,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:14:09,430 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:09,501 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-11-28 04:14:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:14:09,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-28 04:14:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:09,503 INFO L225 Difference]: With dead ends: 82 [2024-11-28 04:14:09,506 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 04:14:09,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:14:09,507 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:09,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:14:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 04:14:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-11-28 04:14:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2024-11-28 04:14:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2024-11-28 04:14:09,538 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 26 [2024-11-28 04:14:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:09,538 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2024-11-28 04:14:09,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2024-11-28 04:14:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:14:09,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:09,542 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:09,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:14:09,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:14:09,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:09,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:09,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1254155740, now seen corresponding path program 1 times [2024-11-28 04:14:09,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:09,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157452362] [2024-11-28 04:14:09,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:14:10,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157452362] [2024-11-28 04:14:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157452362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277508259] [2024-11-28 04:14:10,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:10,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:10,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:10,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:10,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:14:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:10,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:14:10,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 04:14:10,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 04:14:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277508259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:10,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:10,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-28 04:14:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556213535] [2024-11-28 04:14:10,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:10,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:14:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:10,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:14:10,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:14:10,466 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:14:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:10,757 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2024-11-28 04:14:10,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:14:10,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 46 [2024-11-28 04:14:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:10,764 INFO L225 Difference]: With dead ends: 141 [2024-11-28 04:14:10,767 INFO L226 Difference]: Without dead ends: 139 [2024-11-28 04:14:10,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:14:10,771 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:10,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 173 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:14:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-28 04:14:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2024-11-28 04:14:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2024-11-28 04:14:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2024-11-28 04:14:10,825 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 46 [2024-11-28 04:14:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:10,825 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2024-11-28 04:14:10,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:14:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2024-11-28 04:14:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:14:10,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:10,832 INFO L218 NwaCegarLoop]: trace histogram [14, 11, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:14:10,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:14:11,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:14:11,033 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:11,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash 353199782, now seen corresponding path program 1 times [2024-11-28 04:14:11,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:11,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298782876] [2024-11-28 04:14:11,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 55 proven. 155 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-28 04:14:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298782876] [2024-11-28 04:14:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298782876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572452597] [2024-11-28 04:14:11,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:11,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:11,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:11,323 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:11,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:14:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:11,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:14:11,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 309 proven. 67 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:14:11,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 69 proven. 202 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-28 04:14:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572452597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:11,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:11,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 13 [2024-11-28 04:14:11,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73853962] [2024-11-28 04:14:11,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:11,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:14:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:11,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:14:11,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:14:11,920 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:14:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:12,135 INFO L93 Difference]: Finished difference Result 224 states and 401 transitions. [2024-11-28 04:14:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:14:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 124 [2024-11-28 04:14:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:12,138 INFO L225 Difference]: With dead ends: 224 [2024-11-28 04:14:12,138 INFO L226 Difference]: Without dead ends: 130 [2024-11-28 04:14:12,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:14:12,144 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:12,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 89 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:14:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-28 04:14:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 110. [2024-11-28 04:14:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.0813953488372092) internal successors, (93), 84 states have internal predecessors, (93), 12 states have call successors, (12), 3 states have call predecessors, (12), 10 states have return successors, (75), 22 states have call predecessors, (75), 11 states have call successors, (75) [2024-11-28 04:14:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 180 transitions. [2024-11-28 04:14:12,185 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 180 transitions. Word has length 124 [2024-11-28 04:14:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:12,185 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 180 transitions. [2024-11-28 04:14:12,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:14:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 180 transitions. [2024-11-28 04:14:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 04:14:12,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:12,190 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:12,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:12,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:14:12,391 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:12,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1697106886, now seen corresponding path program 2 times [2024-11-28 04:14:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:12,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605384972] [2024-11-28 04:14:12,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:12,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:12,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 32 proven. 124 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-28 04:14:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605384972] [2024-11-28 04:14:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605384972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685383451] [2024-11-28 04:14:12,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:12,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:12,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:12,559 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:12,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:14:12,637 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:12,637 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:12,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:14:12,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-28 04:14:12,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-28 04:14:13,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685383451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:13,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:13,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-28 04:14:13,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528567941] [2024-11-28 04:14:13,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:13,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:14:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:13,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:14:13,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:14:13,343 INFO L87 Difference]: Start difference. First operand 110 states and 180 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:14:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:13,493 INFO L93 Difference]: Finished difference Result 173 states and 293 transitions. [2024-11-28 04:14:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:14:13,494 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 126 [2024-11-28 04:14:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:13,495 INFO L225 Difference]: With dead ends: 173 [2024-11-28 04:14:13,495 INFO L226 Difference]: Without dead ends: 67 [2024-11-28 04:14:13,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 240 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:14:13,497 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:13,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 44 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:14:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-28 04:14:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-11-28 04:14:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (26), 10 states have call predecessors, (26), 6 states have call successors, (26) [2024-11-28 04:14:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-11-28 04:14:13,508 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 126 [2024-11-28 04:14:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:13,508 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-11-28 04:14:13,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:14:13,508 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-11-28 04:14:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 04:14:13,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:13,510 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:14:13,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:13,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:14:13,714 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:13,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:13,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1897895364, now seen corresponding path program 2 times [2024-11-28 04:14:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607813316] [2024-11-28 04:14:13,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:13,739 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:13,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 59 proven. 135 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-28 04:14:13,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:13,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607813316] [2024-11-28 04:14:13,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607813316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:13,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836043763] [2024-11-28 04:14:13,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:13,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:13,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:13,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:13,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:14:14,064 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:14,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:14,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:14:14,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 306 proven. 15 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-28 04:14:14,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 62 proven. 168 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2024-11-28 04:14:14,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836043763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:14,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:14,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-28 04:14:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482515810] [2024-11-28 04:14:14,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:14,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:14:14,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:14,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:14:14,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:14:14,580 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:14:14,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:14,706 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2024-11-28 04:14:14,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:14:14,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 130 [2024-11-28 04:14:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:14,707 INFO L225 Difference]: With dead ends: 115 [2024-11-28 04:14:14,707 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:14:14,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 252 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:14:14,709 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:14,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 61 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:14:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:14:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-28 04:14:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 04:14:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-28 04:14:14,717 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 130 [2024-11-28 04:14:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:14,718 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-28 04:14:14,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:14:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-28 04:14:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:14:14,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:14,719 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 12, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 1, 1, 1, 1, 1] [2024-11-28 04:14:14,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:14,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:14,920 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:14,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1234322996, now seen corresponding path program 3 times [2024-11-28 04:14:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778471584] [2024-11-28 04:14:14,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:14,970 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:14:14,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 18 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 04:14:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778471584] [2024-11-28 04:14:15,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778471584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:15,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768797019] [2024-11-28 04:14:15,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:15,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:15,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:15,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:15,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:14:15,165 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:14:15,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:15,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:14:15,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 207 proven. 21 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 04:14:15,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 207 proven. 22 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-28 04:14:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768797019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:15,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2024-11-28 04:14:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121915994] [2024-11-28 04:14:15,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:15,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:14:15,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:15,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:14:15,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:14:15,647 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:14:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:15,768 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2024-11-28 04:14:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:14:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 131 [2024-11-28 04:14:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:15,770 INFO L225 Difference]: With dead ends: 108 [2024-11-28 04:14:15,770 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 04:14:15,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 256 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:14:15,771 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:15,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 89 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:14:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 04:14:15,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-28 04:14:15,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 04:14:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-28 04:14:15,784 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 131 [2024-11-28 04:14:15,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:15,784 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-28 04:14:15,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:14:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-28 04:14:15,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:14:15,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:15,786 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-28 04:14:15,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:14:15,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:14:15,990 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:15,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:15,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1425608327, now seen corresponding path program 4 times [2024-11-28 04:14:15,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:15,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997905102] [2024-11-28 04:14:15,990 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:14:15,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:16,005 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:14:16,006 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 72 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:14:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997905102] [2024-11-28 04:14:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997905102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:16,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095937782] [2024-11-28 04:14:16,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:14:16,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:16,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:16,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:14:16,283 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:14:16,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:16,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:14:16,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-28 04:14:16,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:14:17,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095937782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:17,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-28 04:14:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837838075] [2024-11-28 04:14:17,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:17,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:14:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:17,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:14:17,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:14:17,216 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 04:14:17,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:17,552 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2024-11-28 04:14:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:14:17,553 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 105 [2024-11-28 04:14:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:17,554 INFO L225 Difference]: With dead ends: 121 [2024-11-28 04:14:17,554 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 04:14:17,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 202 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:14:17,556 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 155 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:17,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 90 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:14:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 04:14:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2024-11-28 04:14:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-28 04:14:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-28 04:14:17,564 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 105 [2024-11-28 04:14:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:17,564 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-28 04:14:17,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 04:14:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-28 04:14:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-28 04:14:17,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:17,567 INFO L218 NwaCegarLoop]: trace histogram [30, 27, 24, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 12, 9, 6, 1, 1, 1, 1, 1] [2024-11-28 04:14:17,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:14:17,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:14:17,768 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:17,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1933603416, now seen corresponding path program 5 times [2024-11-28 04:14:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:17,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383099702] [2024-11-28 04:14:17,769 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:14:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:17,798 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 04:14:17,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 338 proven. 786 refuted. 0 times theorem prover too weak. 1637 trivial. 0 not checked. [2024-11-28 04:14:18,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383099702] [2024-11-28 04:14:18,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383099702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068172237] [2024-11-28 04:14:18,122 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:14:18,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:18,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:18,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:18,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:14:18,230 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 04:14:18,231 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:18,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:14:18,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 1521 proven. 384 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2024-11-28 04:14:18,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 339 proven. 794 refuted. 0 times theorem prover too weak. 1628 trivial. 0 not checked. [2024-11-28 04:14:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068172237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:19,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 21 [2024-11-28 04:14:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782744420] [2024-11-28 04:14:19,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:19,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:14:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:19,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:14:19,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:14:19,259 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:14:19,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:19,579 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2024-11-28 04:14:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:14:19,580 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 282 [2024-11-28 04:14:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:19,582 INFO L225 Difference]: With dead ends: 143 [2024-11-28 04:14:19,583 INFO L226 Difference]: Without dead ends: 87 [2024-11-28 04:14:19,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 554 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:14:19,585 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 111 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:19,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 85 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:14:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-28 04:14:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2024-11-28 04:14:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-28 04:14:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-28 04:14:19,600 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 282 [2024-11-28 04:14:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:19,600 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-28 04:14:19,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 13 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-28 04:14:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-28 04:14:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:14:19,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:19,603 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:14:19,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:14:19,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:14:19,804 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:19,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1530013064, now seen corresponding path program 6 times [2024-11-28 04:14:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328238105] [2024-11-28 04:14:19,806 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:14:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:19,831 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:14:19,831 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 55 proven. 137 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-28 04:14:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328238105] [2024-11-28 04:14:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328238105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966048728] [2024-11-28 04:14:20,414 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:14:20,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:20,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:20,416 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:20,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:14:20,516 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:14:20,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:20,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:14:20,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 163 proven. 137 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-28 04:14:20,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 167 proven. 142 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-28 04:14:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966048728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:21,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:21,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 13] total 28 [2024-11-28 04:14:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436564994] [2024-11-28 04:14:21,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:21,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:14:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:21,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:14:21,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:14:21,467 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 28 states have internal predecessors, (113), 13 states have call successors, (17), 1 states have call predecessors, (17), 11 states have return successors, (22), 16 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-28 04:14:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:22,353 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2024-11-28 04:14:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:14:22,354 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 28 states have internal predecessors, (113), 13 states have call successors, (17), 1 states have call predecessors, (17), 11 states have return successors, (22), 16 states have call predecessors, (22), 13 states have call successors, (22) Word has length 124 [2024-11-28 04:14:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:22,355 INFO L225 Difference]: With dead ends: 167 [2024-11-28 04:14:22,355 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 04:14:22,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=385, Invalid=1685, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:14:22,357 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 152 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:22,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 171 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:14:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 04:14:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2024-11-28 04:14:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (19), 9 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 04:14:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2024-11-28 04:14:22,368 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 124 [2024-11-28 04:14:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:22,368 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2024-11-28 04:14:22,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.035714285714286) internal successors, (113), 28 states have internal predecessors, (113), 13 states have call successors, (17), 1 states have call predecessors, (17), 11 states have return successors, (22), 16 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-28 04:14:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2024-11-28 04:14:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:14:22,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:22,370 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 13, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1, 1] [2024-11-28 04:14:22,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:14:22,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:14:22,571 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:22,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash -482453247, now seen corresponding path program 7 times [2024-11-28 04:14:22,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:22,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807550434] [2024-11-28 04:14:22,572 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:14:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2024-11-28 04:14:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807550434] [2024-11-28 04:14:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807550434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436889471] [2024-11-28 04:14:23,181 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:14:23,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:23,184 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:23,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:14:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:23,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:14:23,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-28 04:14:23,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-28 04:14:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436889471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:24,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2024-11-28 04:14:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343043196] [2024-11-28 04:14:24,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:24,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:14:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:24,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:14:24,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:14:24,997 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:14:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:25,205 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2024-11-28 04:14:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:14:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 150 [2024-11-28 04:14:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:25,207 INFO L225 Difference]: With dead ends: 117 [2024-11-28 04:14:25,207 INFO L226 Difference]: Without dead ends: 116 [2024-11-28 04:14:25,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 284 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=967, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:14:25,208 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:25,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 263 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:14:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-28 04:14:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2024-11-28 04:14:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 84 states have internal predecessors, (90), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (35), 14 states have call predecessors, (35), 12 states have call successors, (35) [2024-11-28 04:14:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 138 transitions. [2024-11-28 04:14:25,221 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 138 transitions. Word has length 150 [2024-11-28 04:14:25,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:25,221 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 138 transitions. [2024-11-28 04:14:25,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:14:25,222 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 138 transitions. [2024-11-28 04:14:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-28 04:14:25,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:25,232 INFO L218 NwaCegarLoop]: trace histogram [47, 45, 38, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 21, 15, 9, 1, 1, 1, 1, 1] [2024-11-28 04:14:25,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:25,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:14:25,436 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:25,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 646779311, now seen corresponding path program 8 times [2024-11-28 04:14:25,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:25,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006734005] [2024-11-28 04:14:25,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:25,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:25,492 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:25,492 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 558 proven. 2001 refuted. 0 times theorem prover too weak. 4750 trivial. 0 not checked. [2024-11-28 04:14:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:26,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006734005] [2024-11-28 04:14:26,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006734005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:26,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064762232] [2024-11-28 04:14:26,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:14:26,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:26,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:26,379 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:26,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:14:26,568 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:14:26,568 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:26,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:14:26,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 3859 proven. 1245 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2024-11-28 04:14:26,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 658 proven. 2493 refuted. 0 times theorem prover too weak. 4158 trivial. 0 not checked. [2024-11-28 04:14:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064762232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:28,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 22] total 27 [2024-11-28 04:14:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507459462] [2024-11-28 04:14:28,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:28,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:14:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:28,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:14:28,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:14:28,726 INFO L87 Difference]: Start difference. First operand 107 states and 138 transitions. Second operand has 27 states, 27 states have (on average 6.037037037037037) internal successors, (163), 27 states have internal predecessors, (163), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-28 04:14:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:29,321 INFO L93 Difference]: Finished difference Result 251 states and 348 transitions. [2024-11-28 04:14:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:14:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.037037037037037) internal successors, (163), 27 states have internal predecessors, (163), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) Word has length 453 [2024-11-28 04:14:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:29,323 INFO L225 Difference]: With dead ends: 251 [2024-11-28 04:14:29,324 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 04:14:29,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 891 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:14:29,326 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 296 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:29,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 156 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:14:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 04:14:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 128. [2024-11-28 04:14:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.058252427184466) internal successors, (109), 100 states have internal predecessors, (109), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (37), 17 states have call predecessors, (37), 14 states have call successors, (37) [2024-11-28 04:14:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 161 transitions. [2024-11-28 04:14:29,341 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 161 transitions. Word has length 453 [2024-11-28 04:14:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:29,341 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 161 transitions. [2024-11-28 04:14:29,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.037037037037037) internal successors, (163), 27 states have internal predecessors, (163), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-28 04:14:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 161 transitions. [2024-11-28 04:14:29,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 04:14:29,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:29,347 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1, 1] [2024-11-28 04:14:29,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:14:29,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:14:29,551 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:29,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1126489269, now seen corresponding path program 9 times [2024-11-28 04:14:29,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:29,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456110319] [2024-11-28 04:14:29,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:29,592 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-28 04:14:29,592 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 791 proven. 523 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2024-11-28 04:14:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456110319] [2024-11-28 04:14:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456110319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101078495] [2024-11-28 04:14:29,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:29,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:29,923 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:29,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:14:30,079 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-28 04:14:30,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:30,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:14:30,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 800 proven. 532 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2024-11-28 04:14:30,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 812 proven. 551 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2024-11-28 04:14:31,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101078495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:31,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 21 [2024-11-28 04:14:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238107808] [2024-11-28 04:14:31,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:31,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:14:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:31,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:14:31,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:14:31,372 INFO L87 Difference]: Start difference. First operand 128 states and 161 transitions. Second operand has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-28 04:14:31,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:31,776 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2024-11-28 04:14:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:14:31,777 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) Word has length 301 [2024-11-28 04:14:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:31,779 INFO L225 Difference]: With dead ends: 293 [2024-11-28 04:14:31,779 INFO L226 Difference]: Without dead ends: 143 [2024-11-28 04:14:31,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 591 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:14:31,782 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 117 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:31,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 172 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:14:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-28 04:14:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 118. [2024-11-28 04:14:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 93 states have internal predecessors, (100), 14 states have call successors, (14), 11 states have call predecessors, (14), 8 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-28 04:14:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2024-11-28 04:14:31,796 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 301 [2024-11-28 04:14:31,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:31,797 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2024-11-28 04:14:31,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.333333333333333) internal successors, (112), 21 states have internal predecessors, (112), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-28 04:14:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2024-11-28 04:14:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-28 04:14:31,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:31,801 INFO L218 NwaCegarLoop]: trace histogram [48, 46, 39, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 22, 15, 9, 1, 1, 1, 1, 1] [2024-11-28 04:14:31,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:14:32,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:14:32,001 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:32,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1072885185, now seen corresponding path program 10 times [2024-11-28 04:14:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:32,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365549938] [2024-11-28 04:14:32,002 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:14:32,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:32,067 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:14:32,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7666 backedges. 1105 proven. 2128 refuted. 0 times theorem prover too weak. 4433 trivial. 0 not checked. [2024-11-28 04:14:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365549938] [2024-11-28 04:14:32,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365549938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208721417] [2024-11-28 04:14:32,643 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:14:32,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:32,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:32,646 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:32,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:14:32,820 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:14:32,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:32,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:14:32,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7666 backedges. 1310 proven. 2275 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2024-11-28 04:14:33,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7666 backedges. 1310 proven. 2390 refuted. 0 times theorem prover too weak. 3966 trivial. 0 not checked. [2024-11-28 04:14:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208721417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:35,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-28 04:14:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522807601] [2024-11-28 04:14:35,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:35,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:14:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:35,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:14:35,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:14:35,922 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 32 states, 32 states have (on average 5.4375) internal successors, (174), 32 states have internal predecessors, (174), 25 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 15 states have call predecessors, (38), 25 states have call successors, (38) [2024-11-28 04:14:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:36,692 INFO L93 Difference]: Finished difference Result 267 states and 351 transitions. [2024-11-28 04:14:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:14:36,692 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.4375) internal successors, (174), 32 states have internal predecessors, (174), 25 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 15 states have call predecessors, (38), 25 states have call successors, (38) Word has length 464 [2024-11-28 04:14:36,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:36,694 INFO L225 Difference]: With dead ends: 267 [2024-11-28 04:14:36,695 INFO L226 Difference]: Without dead ends: 155 [2024-11-28 04:14:36,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 910 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 04:14:36,697 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 372 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:36,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 223 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:14:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-28 04:14:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 134. [2024-11-28 04:14:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 108 states have (on average 1.037037037037037) internal successors, (112), 106 states have internal predecessors, (112), 17 states have call successors, (17), 14 states have call predecessors, (17), 8 states have return successors, (31), 13 states have call predecessors, (31), 16 states have call successors, (31) [2024-11-28 04:14:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2024-11-28 04:14:36,711 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 464 [2024-11-28 04:14:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:36,711 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2024-11-28 04:14:36,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.4375) internal successors, (174), 32 states have internal predecessors, (174), 25 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 15 states have call predecessors, (38), 25 states have call successors, (38) [2024-11-28 04:14:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2024-11-28 04:14:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-28 04:14:36,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:36,714 INFO L218 NwaCegarLoop]: trace histogram [42, 40, 34, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1, 1] [2024-11-28 04:14:36,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:14:36,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:36,919 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:36,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:36,920 INFO L85 PathProgramCache]: Analyzing trace with hash -570782742, now seen corresponding path program 11 times [2024-11-28 04:14:36,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:36,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393674915] [2024-11-28 04:14:36,920 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:14:36,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:36,997 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-28 04:14:36,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 914 proven. 1467 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2024-11-28 04:14:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393674915] [2024-11-28 04:14:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393674915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652637364] [2024-11-28 04:14:40,762 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:14:40,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:40,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:40,765 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:40,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:14:41,048 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-28 04:14:41,048 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:41,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 04:14:41,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2024-11-28 04:14:41,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2024-11-28 04:14:49,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652637364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:49,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:49,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2024-11-28 04:14:49,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344183378] [2024-11-28 04:14:49,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:49,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 04:14:49,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:49,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 04:14:49,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:14:49,857 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 48 states have internal predecessors, (125), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-28 04:14:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:50,145 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2024-11-28 04:14:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:14:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 48 states have internal predecessors, (125), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 405 [2024-11-28 04:14:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:50,150 INFO L225 Difference]: With dead ends: 165 [2024-11-28 04:14:50,150 INFO L226 Difference]: Without dead ends: 164 [2024-11-28 04:14:50,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 788 SyntacticMatches, 55 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2634 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=613, Invalid=2039, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:14:50,156 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:50,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 280 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:14:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-28 04:14:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 155. [2024-11-28 04:14:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 125 states have (on average 1.032) internal successors, (129), 122 states have internal predecessors, (129), 19 states have call successors, (19), 14 states have call predecessors, (19), 10 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-11-28 04:14:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 197 transitions. [2024-11-28 04:14:50,182 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 197 transitions. Word has length 405 [2024-11-28 04:14:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:50,184 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 197 transitions. [2024-11-28 04:14:50,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6595744680851063) internal successors, (125), 48 states have internal predecessors, (125), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-28 04:14:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 197 transitions. [2024-11-28 04:14:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2024-11-28 04:14:50,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:50,192 INFO L218 NwaCegarLoop]: trace histogram [84, 82, 68, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1, 1] [2024-11-28 04:14:50,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:14:50,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:50,392 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:50,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2131695555, now seen corresponding path program 12 times [2024-11-28 04:14:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726326838] [2024-11-28 04:14:50,393 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:14:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:50,539 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-11-28 04:14:50,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3204 proven. 2233 refuted. 0 times theorem prover too weak. 18778 trivial. 0 not checked. [2024-11-28 04:14:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726326838] [2024-11-28 04:14:51,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726326838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205587539] [2024-11-28 04:14:51,734 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:14:51,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:51,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:51,736 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:51,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:14:52,314 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-11-28 04:14:52,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:52,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:14:52,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3188 proven. 2246 refuted. 0 times theorem prover too weak. 18781 trivial. 0 not checked. [2024-11-28 04:14:52,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3196 proven. 2310 refuted. 0 times theorem prover too weak. 18709 trivial. 0 not checked. [2024-11-28 04:14:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205587539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:55,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:14:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 25 [2024-11-28 04:14:55,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052783135] [2024-11-28 04:14:55,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:55,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:14:55,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:55,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:14:55,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:14:55,004 INFO L87 Difference]: Start difference. First operand 155 states and 197 transitions. Second operand has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-28 04:14:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:55,779 INFO L93 Difference]: Finished difference Result 406 states and 538 transitions. [2024-11-28 04:14:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:14:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) Word has length 817 [2024-11-28 04:14:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:55,785 INFO L225 Difference]: With dead ends: 406 [2024-11-28 04:14:55,785 INFO L226 Difference]: Without dead ends: 232 [2024-11-28 04:14:55,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1624 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:14:55,788 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 277 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:55,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 175 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:14:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-28 04:14:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 188. [2024-11-28 04:14:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 153 states have (on average 1.0392156862745099) internal successors, (159), 148 states have internal predecessors, (159), 23 states have call successors, (23), 18 states have call predecessors, (23), 11 states have return successors, (56), 21 states have call predecessors, (56), 22 states have call successors, (56) [2024-11-28 04:14:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 238 transitions. [2024-11-28 04:14:55,817 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 238 transitions. Word has length 817 [2024-11-28 04:14:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:55,819 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 238 transitions. [2024-11-28 04:14:55,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 17 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-28 04:14:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 238 transitions. [2024-11-28 04:14:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2024-11-28 04:14:55,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:55,832 INFO L218 NwaCegarLoop]: trace histogram [84, 82, 68, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1, 1] [2024-11-28 04:14:55,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:14:56,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:56,036 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:14:56,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -322537651, now seen corresponding path program 13 times [2024-11-28 04:14:56,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:56,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999511073] [2024-11-28 04:14:56,036 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:14:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 2309 proven. 4945 refuted. 0 times theorem prover too weak. 16961 trivial. 0 not checked. [2024-11-28 04:14:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999511073] [2024-11-28 04:14:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999511073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645784764] [2024-11-28 04:14:57,634 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:14:57,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:57,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:57,636 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:57,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:14:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:58,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:14:58,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 12370 proven. 2667 refuted. 0 times theorem prover too weak. 9178 trivial. 0 not checked. [2024-11-28 04:14:58,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 2300 proven. 5308 refuted. 0 times theorem prover too weak. 16607 trivial. 0 not checked. [2024-11-28 04:15:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645784764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:02,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:02,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 32 [2024-11-28 04:15:02,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480408526] [2024-11-28 04:15:02,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:02,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:15:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:02,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:15:02,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:15:02,376 INFO L87 Difference]: Start difference. First operand 188 states and 238 transitions. Second operand has 32 states, 32 states have (on average 5.71875) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-28 04:15:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:02,973 INFO L93 Difference]: Finished difference Result 388 states and 522 transitions. [2024-11-28 04:15:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:15:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.71875) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) Word has length 817 [2024-11-28 04:15:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:02,978 INFO L225 Difference]: With dead ends: 388 [2024-11-28 04:15:02,978 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 04:15:02,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1678 GetRequests, 1617 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:15:02,983 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:02,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 245 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:15:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 04:15:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 176. [2024-11-28 04:15:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 143 states have (on average 1.027972027972028) internal successors, (147), 140 states have internal predecessors, (147), 23 states have call successors, (23), 19 states have call predecessors, (23), 9 states have return successors, (49), 16 states have call predecessors, (49), 22 states have call successors, (49) [2024-11-28 04:15:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 219 transitions. [2024-11-28 04:15:03,008 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 219 transitions. Word has length 817 [2024-11-28 04:15:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:03,010 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 219 transitions. [2024-11-28 04:15:03,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.71875) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-28 04:15:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 219 transitions. [2024-11-28 04:15:03,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2024-11-28 04:15:03,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:03,018 INFO L218 NwaCegarLoop]: trace histogram [94, 92, 76, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1, 1] [2024-11-28 04:15:03,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:15:03,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:15:03,219 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:15:03,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1647834926, now seen corresponding path program 14 times [2024-11-28 04:15:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436966554] [2024-11-28 04:15:03,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:03,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:03,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:15:03,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 3406 proven. 5088 refuted. 0 times theorem prover too weak. 21958 trivial. 0 not checked. [2024-11-28 04:15:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436966554] [2024-11-28 04:15:05,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436966554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518515732] [2024-11-28 04:15:05,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:15:05,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:05,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:05,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:05,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:15:05,476 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:15:05,476 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:05,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:15:05,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:15:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 3844 proven. 5527 refuted. 0 times theorem prover too weak. 21081 trivial. 0 not checked. [2024-11-28 04:15:05,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:15:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 3844 proven. 5699 refuted. 0 times theorem prover too weak. 20909 trivial. 0 not checked. [2024-11-28 04:15:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518515732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:15:10,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:15:10,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-11-28 04:15:10,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740466045] [2024-11-28 04:15:10,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:15:10,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:15:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:15:10,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:15:10,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:15:10,600 INFO L87 Difference]: Start difference. First operand 176 states and 219 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 29 states have call successors, (33), 1 states have call predecessors, (33), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) [2024-11-28 04:15:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:15:11,297 INFO L93 Difference]: Finished difference Result 375 states and 485 transitions. [2024-11-28 04:15:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:15:11,298 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 29 states have call successors, (33), 1 states have call predecessors, (33), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) Word has length 915 [2024-11-28 04:15:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:15:11,302 INFO L225 Difference]: With dead ends: 375 [2024-11-28 04:15:11,302 INFO L226 Difference]: Without dead ends: 205 [2024-11-28 04:15:11,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1809 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 04:15:11,304 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 289 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:15:11,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 347 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:15:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-28 04:15:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 182. [2024-11-28 04:15:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 148 states have (on average 1.027027027027027) internal successors, (152), 145 states have internal predecessors, (152), 24 states have call successors, (24), 20 states have call predecessors, (24), 9 states have return successors, (51), 16 states have call predecessors, (51), 23 states have call successors, (51) [2024-11-28 04:15:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 227 transitions. [2024-11-28 04:15:11,324 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 227 transitions. Word has length 915 [2024-11-28 04:15:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:15:11,325 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 227 transitions. [2024-11-28 04:15:11,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 29 states have call successors, (33), 1 states have call predecessors, (33), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) [2024-11-28 04:15:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 227 transitions. [2024-11-28 04:15:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1996 [2024-11-28 04:15:11,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:15:11,354 INFO L218 NwaCegarLoop]: trace histogram [205, 201, 166, 103, 103, 103, 103, 101, 101, 101, 101, 101, 100, 100, 100, 99, 63, 39, 1, 1, 1, 1, 1] [2024-11-28 04:15:11,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:15:11,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:11,554 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:15:11,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:15:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1593725023, now seen corresponding path program 15 times [2024-11-28 04:15:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:15:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093552178] [2024-11-28 04:15:11,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:15:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:11,946 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2024-11-28 04:15:11,946 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 146524 backedges. 45176 proven. 15575 refuted. 0 times theorem prover too weak. 85773 trivial. 0 not checked. [2024-11-28 04:15:58,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:58,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093552178] [2024-11-28 04:15:58,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093552178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:58,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449459140] [2024-11-28 04:15:58,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:15:58,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:58,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:58,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:58,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:15:59,478 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2024-11-28 04:15:59,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:15:59,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 269 conjuncts are in the unsatisfiable core [2024-11-28 04:15:59,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 146524 backedges. 44113 proven. 12050 refuted. 0 times theorem prover too weak. 90361 trivial. 0 not checked. [2024-11-28 04:16:00,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 146524 backedges. 45665 proven. 11403 refuted. 0 times theorem prover too weak. 89456 trivial. 0 not checked. [2024-11-28 04:17:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449459140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:22,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 44] total 61 [2024-11-28 04:17:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708657780] [2024-11-28 04:17:22,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:22,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 04:17:22,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:22,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 04:17:22,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=2929, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 04:17:22,396 INFO L87 Difference]: Start difference. First operand 182 states and 227 transitions. Second operand has 62 states, 61 states have (on average 2.7540983606557377) internal successors, (168), 62 states have internal predecessors, (168), 16 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (45), 44 states have call predecessors, (45), 16 states have call successors, (45) [2024-11-28 04:17:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:22,762 INFO L93 Difference]: Finished difference Result 225 states and 310 transitions. [2024-11-28 04:17:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:17:22,763 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.7540983606557377) internal successors, (168), 62 states have internal predecessors, (168), 16 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (45), 44 states have call predecessors, (45), 16 states have call successors, (45) Word has length 1995 [2024-11-28 04:17:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:22,768 INFO L225 Difference]: With dead ends: 225 [2024-11-28 04:17:22,768 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 04:17:22,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4262 GetRequests, 3953 SyntacticMatches, 244 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12053 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=986, Invalid=3436, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 04:17:22,771 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:22,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 245 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:17:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 04:17:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 209. [2024-11-28 04:17:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 169 states have (on average 1.0236686390532543) internal successors, (173), 166 states have internal predecessors, (173), 27 states have call successors, (27), 20 states have call predecessors, (27), 12 states have return successors, (87), 22 states have call predecessors, (87), 26 states have call successors, (87) [2024-11-28 04:17:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 287 transitions. [2024-11-28 04:17:22,804 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 287 transitions. Word has length 1995 [2024-11-28 04:17:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:22,808 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 287 transitions. [2024-11-28 04:17:22,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.7540983606557377) internal successors, (168), 62 states have internal predecessors, (168), 16 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (45), 44 states have call predecessors, (45), 16 states have call successors, (45) [2024-11-28 04:17:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 287 transitions. [2024-11-28 04:17:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2662 [2024-11-28 04:17:22,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:22,857 INFO L218 NwaCegarLoop]: trace histogram [272, 270, 220, 136, 136, 136, 136, 135, 135, 135, 135, 135, 135, 135, 135, 134, 84, 52, 1, 1, 1, 1, 1] [2024-11-28 04:17:22,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:17:23,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:17:23,058 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:17:23,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash -433249625, now seen corresponding path program 16 times [2024-11-28 04:17:23,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:23,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940814510] [2024-11-28 04:17:23,059 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:17:23,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:23,244 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:17:23,244 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 261287 backedges. 5627 proven. 25758 refuted. 0 times theorem prover too weak. 229902 trivial. 0 not checked. [2024-11-28 04:17:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940814510] [2024-11-28 04:17:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940814510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542052793] [2024-11-28 04:17:27,598 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:17:27,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:27,600 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:27,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:17:28,900 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:17:28,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:28,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:17:28,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 261287 backedges. 6589 proven. 29076 refuted. 0 times theorem prover too weak. 225622 trivial. 0 not checked. [2024-11-28 04:17:29,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 261287 backedges. 6589 proven. 29307 refuted. 0 times theorem prover too weak. 225391 trivial. 0 not checked. [2024-11-28 04:17:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542052793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:38,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:38,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 35] total 40 [2024-11-28 04:17:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821745302] [2024-11-28 04:17:38,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:38,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:17:38,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:38,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:17:38,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:17:38,612 INFO L87 Difference]: Start difference. First operand 209 states and 287 transitions. Second operand has 40 states, 40 states have (on average 5.75) internal successors, (230), 40 states have internal predecessors, (230), 34 states have call successors, (39), 1 states have call predecessors, (39), 17 states have return successors, (52), 20 states have call predecessors, (52), 34 states have call successors, (52) [2024-11-28 04:17:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:39,622 INFO L93 Difference]: Finished difference Result 460 states and 702 transitions. [2024-11-28 04:17:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 04:17:39,622 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.75) internal successors, (230), 40 states have internal predecessors, (230), 34 states have call successors, (39), 1 states have call predecessors, (39), 17 states have return successors, (52), 20 states have call predecessors, (52), 34 states have call successors, (52) Word has length 2661 [2024-11-28 04:17:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:39,626 INFO L225 Difference]: With dead ends: 460 [2024-11-28 04:17:39,626 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 04:17:39,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5391 GetRequests, 5300 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1360, Invalid=4340, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 04:17:39,630 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 524 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:39,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 299 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:17:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 04:17:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 188. [2024-11-28 04:17:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 149 states have internal predecessors, (154), 24 states have call successors, (24), 16 states have call predecessors, (24), 12 states have return successors, (80), 22 states have call predecessors, (80), 23 states have call successors, (80) [2024-11-28 04:17:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 258 transitions. [2024-11-28 04:17:39,656 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 258 transitions. Word has length 2661 [2024-11-28 04:17:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:39,657 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 258 transitions. [2024-11-28 04:17:39,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.75) internal successors, (230), 40 states have internal predecessors, (230), 34 states have call successors, (39), 1 states have call predecessors, (39), 17 states have return successors, (52), 20 states have call predecessors, (52), 34 states have call successors, (52) [2024-11-28 04:17:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 258 transitions. [2024-11-28 04:17:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2152 [2024-11-28 04:17:39,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:39,697 INFO L218 NwaCegarLoop]: trace histogram [220, 218, 178, 110, 110, 110, 110, 109, 109, 109, 109, 109, 109, 109, 109, 108, 68, 42, 1, 1, 1, 1, 1] [2024-11-28 04:17:39,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:17:39,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:39,898 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:17:39,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:39,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1373463753, now seen corresponding path program 17 times [2024-11-28 04:17:39,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:39,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367144390] [2024-11-28 04:17:39,900 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:39,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:40,450 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 140 check-sat command(s) [2024-11-28 04:17:40,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 13601 proven. 15544 refuted. 0 times theorem prover too weak. 141281 trivial. 0 not checked. [2024-11-28 04:17:47,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:47,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367144390] [2024-11-28 04:17:47,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367144390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:47,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037322782] [2024-11-28 04:17:47,442 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:17:47,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:47,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:47,445 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:47,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:17:49,553 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 140 check-sat command(s) [2024-11-28 04:17:49,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:17:49,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 3681 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:17:49,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 13601 proven. 15544 refuted. 0 times theorem prover too weak. 141281 trivial. 0 not checked. [2024-11-28 04:17:49,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:17:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 13625 proven. 15787 refuted. 0 times theorem prover too weak. 141014 trivial. 0 not checked. [2024-11-28 04:17:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037322782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:17:59,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:17:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 37] total 39 [2024-11-28 04:17:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277755314] [2024-11-28 04:17:59,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:17:59,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:17:59,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:59,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:17:59,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:17:59,024 INFO L87 Difference]: Start difference. First operand 188 states and 258 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (50), 20 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-28 04:18:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:18:00,501 INFO L93 Difference]: Finished difference Result 504 states and 731 transitions. [2024-11-28 04:18:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 04:18:00,502 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (50), 20 states have call predecessors, (50), 33 states have call successors, (50) Word has length 2151 [2024-11-28 04:18:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:18:00,508 INFO L225 Difference]: With dead ends: 504 [2024-11-28 04:18:00,508 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 04:18:00,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4393 GetRequests, 4285 SyntacticMatches, 18 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1962, Invalid=6410, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 04:18:00,512 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 627 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:18:00,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 337 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:18:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 04:18:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 239. [2024-11-28 04:18:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.0257731958762886) internal successors, (199), 190 states have internal predecessors, (199), 31 states have call successors, (31), 23 states have call predecessors, (31), 13 states have return successors, (95), 25 states have call predecessors, (95), 30 states have call successors, (95) [2024-11-28 04:18:00,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 325 transitions. [2024-11-28 04:18:00,542 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 325 transitions. Word has length 2151 [2024-11-28 04:18:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:18:00,543 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 325 transitions. [2024-11-28 04:18:00,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (50), 20 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-28 04:18:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 325 transitions. [2024-11-28 04:18:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2564 [2024-11-28 04:18:00,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:18:00,587 INFO L218 NwaCegarLoop]: trace histogram [262, 260, 212, 131, 131, 131, 131, 130, 130, 130, 130, 130, 130, 130, 130, 129, 81, 50, 1, 1, 1, 1, 1] [2024-11-28 04:18:00,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:18:00,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:00,788 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:18:00,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:00,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1625903244, now seen corresponding path program 18 times [2024-11-28 04:18:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140123960] [2024-11-28 04:18:00,790 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:18:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:01,075 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2024-11-28 04:18:01,075 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 242328 backedges. 14060 proven. 15073 refuted. 0 times theorem prover too weak. 213195 trivial. 0 not checked. [2024-11-28 04:18:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140123960] [2024-11-28 04:18:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140123960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:18:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017466682] [2024-11-28 04:18:04,619 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:18:04,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:04,621 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:18:04,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:18:06,410 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2024-11-28 04:18:06,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:06,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:18:06,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 242328 backedges. 14506 proven. 16526 refuted. 0 times theorem prover too weak. 211296 trivial. 0 not checked. [2024-11-28 04:18:06,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:18:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 242328 backedges. 14526 proven. 16736 refuted. 0 times theorem prover too weak. 211066 trivial. 0 not checked. [2024-11-28 04:18:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017466682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:18:16,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:18:16,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 32] total 42 [2024-11-28 04:18:16,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182381464] [2024-11-28 04:18:16,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:18:16,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 04:18:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:16,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 04:18:16,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 04:18:16,377 INFO L87 Difference]: Start difference. First operand 239 states and 325 transitions. Second operand has 42 states, 42 states have (on average 5.476190476190476) internal successors, (230), 42 states have internal predecessors, (230), 30 states have call successors, (39), 1 states have call predecessors, (39), 18 states have return successors, (54), 25 states have call predecessors, (54), 30 states have call successors, (54) [2024-11-28 04:18:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:18:17,627 INFO L93 Difference]: Finished difference Result 565 states and 878 transitions. [2024-11-28 04:18:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:18:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.476190476190476) internal successors, (230), 42 states have internal predecessors, (230), 30 states have call successors, (39), 1 states have call predecessors, (39), 18 states have return successors, (54), 25 states have call predecessors, (54), 30 states have call successors, (54) Word has length 2563 [2024-11-28 04:18:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:18:17,633 INFO L225 Difference]: With dead ends: 565 [2024-11-28 04:18:17,633 INFO L226 Difference]: Without dead ends: 332 [2024-11-28 04:18:17,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5198 GetRequests, 5103 SyntacticMatches, 17 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1487, Invalid=4833, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 04:18:17,637 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 262 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:18:17,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 451 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:18:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-28 04:18:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 248. [2024-11-28 04:18:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 201 states have (on average 1.0199004975124377) internal successors, (205), 199 states have internal predecessors, (205), 34 states have call successors, (34), 27 states have call predecessors, (34), 12 states have return successors, (90), 21 states have call predecessors, (90), 33 states have call successors, (90) [2024-11-28 04:18:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 329 transitions. [2024-11-28 04:18:17,669 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 329 transitions. Word has length 2563 [2024-11-28 04:18:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:18:17,670 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 329 transitions. [2024-11-28 04:18:17,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.476190476190476) internal successors, (230), 42 states have internal predecessors, (230), 30 states have call successors, (39), 1 states have call predecessors, (39), 18 states have return successors, (54), 25 states have call predecessors, (54), 30 states have call successors, (54) [2024-11-28 04:18:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 329 transitions. [2024-11-28 04:18:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5227 [2024-11-28 04:18:17,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:18:17,885 INFO L218 NwaCegarLoop]: trace histogram [534, 531, 432, 267, 267, 267, 267, 266, 266, 266, 266, 266, 265, 265, 265, 264, 165, 102, 1, 1, 1, 1, 1] [2024-11-28 04:18:17,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:18:18,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:18:18,086 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:18:18,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:18,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2145013540, now seen corresponding path program 19 times [2024-11-28 04:18:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:18,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716730097] [2024-11-28 04:18:18,088 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:18:18,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1011601 backedges. 15678 proven. 61851 refuted. 0 times theorem prover too weak. 934072 trivial. 0 not checked. [2024-11-28 04:19:04,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:04,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716730097] [2024-11-28 04:19:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716730097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:19:04,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879498658] [2024-11-28 04:19:04,830 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:19:04,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:19:04,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:19:04,832 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:19:04,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:19:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:19:07,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 9673 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:19:07,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:19:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1011601 backedges. 467280 proven. 38514 refuted. 0 times theorem prover too weak. 505807 trivial. 0 not checked. [2024-11-28 04:19:07,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:19:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1011601 backedges. 18499 proven. 68142 refuted. 0 times theorem prover too weak. 924960 trivial. 0 not checked. [2024-11-28 04:19:24,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879498658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:19:24,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:19:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 41] total 46 [2024-11-28 04:19:24,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928069072] [2024-11-28 04:19:24,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:19:24,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 04:19:24,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:24,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 04:19:24,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1766, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:19:24,864 INFO L87 Difference]: Start difference. First operand 248 states and 329 transitions. Second operand has 46 states, 46 states have (on average 6.0) internal successors, (276), 46 states have internal predecessors, (276), 41 states have call successors, (48), 4 states have call predecessors, (48), 20 states have return successors, (61), 22 states have call predecessors, (61), 39 states have call successors, (61) [2024-11-28 04:19:26,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:26,483 INFO L93 Difference]: Finished difference Result 574 states and 819 transitions. [2024-11-28 04:19:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 04:19:26,484 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.0) internal successors, (276), 46 states have internal predecessors, (276), 41 states have call successors, (48), 4 states have call predecessors, (48), 20 states have return successors, (61), 22 states have call predecessors, (61), 39 states have call successors, (61) Word has length 5226 [2024-11-28 04:19:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:26,490 INFO L225 Difference]: With dead ends: 574 [2024-11-28 04:19:26,490 INFO L226 Difference]: Without dead ends: 332 [2024-11-28 04:19:26,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10555 GetRequests, 10426 SyntacticMatches, 23 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3211 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2619, Invalid=8937, Unknown=0, NotChecked=0, Total=11556 [2024-11-28 04:19:26,496 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 1170 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:26,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 318 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:19:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-28 04:19:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 215. [2024-11-28 04:19:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 172 states have internal predecessors, (176), 29 states have call successors, (29), 21 states have call predecessors, (29), 12 states have return successors, (83), 21 states have call predecessors, (83), 28 states have call successors, (83) [2024-11-28 04:19:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2024-11-28 04:19:26,528 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 5226 [2024-11-28 04:19:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:26,531 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2024-11-28 04:19:26,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.0) internal successors, (276), 46 states have internal predecessors, (276), 41 states have call successors, (48), 4 states have call predecessors, (48), 20 states have return successors, (61), 22 states have call predecessors, (61), 39 states have call successors, (61) [2024-11-28 04:19:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2024-11-28 04:19:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2819 [2024-11-28 04:19:26,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:26,592 INFO L218 NwaCegarLoop]: trace histogram [288, 286, 233, 144, 144, 144, 144, 143, 143, 143, 143, 143, 143, 143, 143, 142, 89, 55, 1, 1, 1, 1, 1] [2024-11-28 04:19:26,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:19:26,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:19:26,793 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-28 04:19:26,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2013416505, now seen corresponding path program 20 times [2024-11-28 04:19:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558252655] [2024-11-28 04:19:26,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:19:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:27,248 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:19:27,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 293153 backedges. 50344 proven. 70051 refuted. 0 times theorem prover too weak. 172758 trivial. 0 not checked. [2024-11-28 04:25:27,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:27,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558252655] [2024-11-28 04:25:27,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558252655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:27,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750829026] [2024-11-28 04:25:27,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:27,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:27,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:27,940 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:27,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfc6468-52ff-4408-9b7e-0f6610c787d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:25:29,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:29,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:29,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 5225 conjuncts, 573 conjuncts are in the unsatisfiable core [2024-11-28 04:25:29,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 293153 backedges. 49486 proven. 53639 refuted. 0 times theorem prover too weak. 190028 trivial. 0 not checked. [2024-11-28 04:25:32,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:08,618 WARN L286 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 493 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)