./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/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_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/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 64bit --witnessprinter.graph.data.programhash 694713b32fd9c1719d4a8995f33c66cfa1f4ebdac7358c65fcc55ce37970cfaf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:04:30,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:04:30,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-28 05:04:30,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:04:30,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:04:30,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:04:30,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:04:30,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:04:30,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:04:30,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:04:30,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:04:30,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:04:30,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:04:30,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:04:30,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:04:30,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:04:30,449 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:04:30,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:04:30,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:04:30,449 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:04:30,450 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:04:30,450 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:04:30,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:04:30,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:04:30,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:04:30,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:30,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:04:30,451 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:30,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:04:30,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:04:30,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:04:30,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:04:30,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:04:30,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:04:30,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:04:30,454 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_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 694713b32fd9c1719d4a8995f33c66cfa1f4ebdac7358c65fcc55ce37970cfaf [2024-11-28 05:04:30,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:04:30,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:04:30,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:04:30,815 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:04:30,815 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:04:30,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c [2024-11-28 05:04:34,195 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/data/93c2efc90/f9a81aa3a5844ef093472277fbf4dd01/FLAGdcef1f809 [2024-11-28 05:04:34,546 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:04:34,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c [2024-11-28 05:04:34,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/data/93c2efc90/f9a81aa3a5844ef093472277fbf4dd01/FLAGdcef1f809 [2024-11-28 05:04:34,592 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/data/93c2efc90/f9a81aa3a5844ef093472277fbf4dd01 [2024-11-28 05:04:34,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:04:34,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:04:34,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:34,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:04:34,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:04:34,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a870a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34, skipping insertion in model container [2024-11-28 05:04:34,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:04:34,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:34,862 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:04:34,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:34,904 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:04:34,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34 WrapperNode [2024-11-28 05:04:34,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:34,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:34,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:04:34,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:04:34,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,948 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-11-28 05:04:34,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:34,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:04:34,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:04:34,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:04:34,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,983 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 05:04:34,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,989 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:34,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:35,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:04:35,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:04:35,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:04:35,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:04:35,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (1/1) ... [2024-11-28 05:04:35,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:35,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:04:35,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:04:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-28 05:04:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-28 05:04:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:04:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:04:35,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:04:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:04:35,172 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:04:35,175 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:04:35,338 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-28 05:04:35,338 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:04:35,358 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:04:35,359 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 05:04:35,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:35 BoogieIcfgContainer [2024-11-28 05:04:35,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:04:35,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:04:35,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:04:35,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:04:35,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:34" (1/3) ... [2024-11-28 05:04:35,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b47ffba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:35, skipping insertion in model container [2024-11-28 05:04:35,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:34" (2/3) ... [2024-11-28 05:04:35,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b47ffba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:35, skipping insertion in model container [2024-11-28 05:04:35,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:35" (3/3) ... [2024-11-28 05:04:35,376 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci01-2-overflow.c [2024-11-28 05:04:35,400 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:04:35,403 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci01-2-overflow.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-11-28 05:04:35,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:04:35,484 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;@50459cb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:04:35,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 05:04:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 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 05:04:35,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:04:35,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:35,499 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:35,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:35,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash 629029755, now seen corresponding path program 1 times [2024-11-28 05:04:35,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:35,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331654671] [2024-11-28 05:04:35,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:35,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:35,795 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 05:04:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331654671] [2024-11-28 05:04:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331654671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:04:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586290252] [2024-11-28 05:04:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:35,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:04:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:35,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:04:35,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:04:35,844 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 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 05:04:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:35,925 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-28 05:04:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:04:35,928 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 05:04:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:35,937 INFO L225 Difference]: With dead ends: 37 [2024-11-28 05:04:35,937 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 05:04:35,941 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 05:04:35,945 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:35,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:04:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 05:04:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-28 05:04:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.4) 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:04:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-28 05:04:36,003 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2024-11-28 05:04:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:36,004 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-28 05:04:36,005 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 05:04:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-28 05:04:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 05:04:36,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:36,008 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:36,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:04:36,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:36,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1974914033, now seen corresponding path program 1 times [2024-11-28 05:04:36,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:36,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468175159] [2024-11-28 05:04:36,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:36,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:36,145 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 05:04:36,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468175159] [2024-11-28 05:04:36,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468175159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:36,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:36,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:04:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403208961] [2024-11-28 05:04:36,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:36,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:36,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:36,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:36,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:36,149 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.0) 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 05:04:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:36,273 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-28 05:04:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:36,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) 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 05:04:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:36,275 INFO L225 Difference]: With dead ends: 25 [2024-11-28 05:04:36,275 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 05:04:36,275 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 05:04:36,277 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:36,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:04:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 05:04:36,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-28 05:04:36,283 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 05:04:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-28 05:04:36,285 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2024-11-28 05:04:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:36,285 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-28 05:04:36,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) 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 05:04:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-28 05:04:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 05:04:36,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:36,287 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] [2024-11-28 05:04:36,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:04:36,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:36,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1558234811, now seen corresponding path program 1 times [2024-11-28 05:04:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:36,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338091708] [2024-11-28 05:04:36,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 05:04:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338091708] [2024-11-28 05:04:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338091708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:04:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298533836] [2024-11-28 05:04:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:36,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:36,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:36,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:36,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:36,609 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 05:04:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:36,703 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-28 05:04:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:36,706 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 24 [2024-11-28 05:04:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:36,707 INFO L225 Difference]: With dead ends: 35 [2024-11-28 05:04:36,707 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 05:04:36,708 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 05:04:36,712 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:36,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:04:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 05:04:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-28 05:04:36,729 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 05:04:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-28 05:04:36,733 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2024-11-28 05:04:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:36,733 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-28 05:04:36,733 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 05:04:36,733 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-28 05:04:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:04:36,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:36,735 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:36,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:04:36,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:36,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash 171916151, now seen corresponding path program 1 times [2024-11-28 05:04:36,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:36,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556717665] [2024-11-28 05:04:36,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:36,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:04:37,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556717665] [2024-11-28 05:04:37,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556717665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037969740] [2024-11-28 05:04:37,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:37,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:37,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:37,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:37,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:04:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:37,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:04:37,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 05:04:37,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 05:04:37,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037969740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:37,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:37,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-28 05:04:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262871104] [2024-11-28 05:04:37,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:37,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:04:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:37,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:04:37,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:04:37,553 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 05:04:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:38,020 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-11-28 05:04:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:04:38,021 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 31 [2024-11-28 05:04:38,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:38,022 INFO L225 Difference]: With dead ends: 91 [2024-11-28 05:04:38,023 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 05:04:38,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:04:38,026 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:38,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 92 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:04:38,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 05:04:38,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2024-11-28 05:04:38,041 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 05:04:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-28 05:04:38,047 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2024-11-28 05:04:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:38,048 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-28 05:04:38,048 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 05:04:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-28 05:04:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 05:04:38,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:38,050 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:38,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:04:38,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:38,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:38,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash 170784145, now seen corresponding path program 2 times [2024-11-28 05:04:38,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:38,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302805170] [2024-11-28 05:04:38,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:38,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:38,292 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:04:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302805170] [2024-11-28 05:04:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302805170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920044710] [2024-11-28 05:04:38,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:38,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:38,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:38,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:38,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:04:38,575 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:38,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:38,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:04:38,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:04:38,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:04:38,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920044710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:38,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:04:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 05:04:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919492416] [2024-11-28 05:04:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:38,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:38,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:38,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:04:38,658 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 05:04:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:38,714 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-28 05:04:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:38,715 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 31 [2024-11-28 05:04:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:38,716 INFO L225 Difference]: With dead ends: 60 [2024-11-28 05:04:38,717 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 05:04:38,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 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 05:04:38,718 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 05:04:38,722 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 05:04:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 05:04:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-28 05:04:38,743 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 05:04:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-28 05:04:38,745 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 31 [2024-11-28 05:04:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:38,749 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-28 05:04:38,749 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 05:04:38,750 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-28 05:04:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 05:04:38,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:38,751 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:38,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:38,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:38,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:38,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 999341253, now seen corresponding path program 1 times [2024-11-28 05:04:38,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:38,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891151455] [2024-11-28 05:04:38,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:38,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:04:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891151455] [2024-11-28 05:04:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891151455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746897583] [2024-11-28 05:04:39,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:39,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:39,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:39,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:39,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:04:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:39,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:04:39,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:04:39,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:04:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746897583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:04:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 05:04:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578157118] [2024-11-28 05:04:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:39,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:39,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:39,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:04:39,237 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 05:04:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:39,294 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-11-28 05:04:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:04:39,295 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 32 [2024-11-28 05:04:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:39,297 INFO L225 Difference]: With dead ends: 82 [2024-11-28 05:04:39,297 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 05:04:39,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 05:04:39,299 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:39,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:04:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 05:04:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-11-28 05:04:39,319 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 05:04:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2024-11-28 05:04:39,321 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 32 [2024-11-28 05:04:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:39,321 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2024-11-28 05:04:39,322 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 05:04:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2024-11-28 05:04:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:04:39,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:39,324 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:39,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:39,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:39,529 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:39,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1613174786, now seen corresponding path program 1 times [2024-11-28 05:04:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696559332] [2024-11-28 05:04:39,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 05:04:39,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:39,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696559332] [2024-11-28 05:04:39,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696559332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:39,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805424413] [2024-11-28 05:04:39,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:39,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:39,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:39,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:04:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:39,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:04:39,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 05:04:40,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:04:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805424413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:40,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-28 05:04:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900279985] [2024-11-28 05:04:40,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:40,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:04:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:40,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:04:40,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:04:40,465 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 05:04:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:40,782 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2024-11-28 05:04:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:04:40,783 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 52 [2024-11-28 05:04:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:40,790 INFO L225 Difference]: With dead ends: 141 [2024-11-28 05:04:40,790 INFO L226 Difference]: Without dead ends: 139 [2024-11-28 05:04:40,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:04:40,794 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:40,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 137 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:04:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-28 05:04:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2024-11-28 05:04:40,841 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 05:04:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2024-11-28 05:04:40,847 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 52 [2024-11-28 05:04:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:40,848 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2024-11-28 05:04:40,848 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 05:04:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2024-11-28 05:04:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 05:04:40,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:40,856 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:40,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:04:41,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:41,057 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:41,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1355362734, now seen corresponding path program 1 times [2024-11-28 05:04:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:41,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704051291] [2024-11-28 05:04:41,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 38 proven. 80 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-28 05:04:41,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704051291] [2024-11-28 05:04:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704051291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230576989] [2024-11-28 05:04:41,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:41,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:41,344 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:04:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:41,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:04:41,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 50 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 05:04:41,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 50 proven. 87 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 05:04:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230576989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:42,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:42,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-11-28 05:04:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476153123] [2024-11-28 05:04:42,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:42,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:04:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:42,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:04:42,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:04:42,203 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 05:04:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:42,508 INFO L93 Difference]: Finished difference Result 174 states and 299 transitions. [2024-11-28 05:04:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 82 [2024-11-28 05:04:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:42,511 INFO L225 Difference]: With dead ends: 174 [2024-11-28 05:04:42,511 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 05:04:42,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 157 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:04:42,514 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 103 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:42,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 75 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:04:42,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 05:04:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-11-28 05:04:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 53 states have internal predecessors, (61), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2024-11-28 05:04:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-11-28 05:04:42,548 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 82 [2024-11-28 05:04:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:42,548 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-11-28 05:04:42,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 05:04:42,549 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-11-28 05:04:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 05:04:42,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:42,554 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 10, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 05:04:42,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:04:42,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:42,755 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:42,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -195722252, now seen corresponding path program 2 times [2024-11-28 05:04:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538969823] [2024-11-28 05:04:42,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:42,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:42,783 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:42,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 55 proven. 134 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-28 05:04:42,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538969823] [2024-11-28 05:04:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538969823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492314842] [2024-11-28 05:04:43,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:43,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:43,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:43,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:43,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:04:43,077 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:43,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:43,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:04:43,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 300 proven. 15 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 05:04:43,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 58 proven. 166 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-11-28 05:04:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492314842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:43,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:43,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-28 05:04:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125822382] [2024-11-28 05:04:43,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:43,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:04:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:43,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:04:43,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:04:43,660 INFO L87 Difference]: Start difference. First operand 70 states and 94 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 05:04:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:43,813 INFO L93 Difference]: Finished difference Result 129 states and 179 transitions. [2024-11-28 05:04:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:04:43,814 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 128 [2024-11-28 05:04:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:43,816 INFO L225 Difference]: With dead ends: 129 [2024-11-28 05:04:43,816 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 05:04:43,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 248 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 05:04:43,818 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:43,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 72 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:04:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 05:04:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-28 05:04:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 10 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 05:04:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-28 05:04:43,840 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 128 [2024-11-28 05:04:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:43,844 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-28 05:04:43,844 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 05:04:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-28 05:04:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 05:04:43,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:43,846 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 12, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1] [2024-11-28 05:04:43,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:44,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 05:04:44,048 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:44,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1731852194, now seen corresponding path program 3 times [2024-11-28 05:04:44,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:44,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546942358] [2024-11-28 05:04:44,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:44,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:44,088 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 05:04:44,089 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 206 proven. 18 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-28 05:04:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546942358] [2024-11-28 05:04:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546942358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167457994] [2024-11-28 05:04:44,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:44,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:44,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:44,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:44,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:04:44,357 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 05:04:44,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:44,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:04:44,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 203 proven. 21 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-28 05:04:44,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 203 proven. 22 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-28 05:04:45,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167457994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:45,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:45,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2024-11-28 05:04:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621445371] [2024-11-28 05:04:45,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:45,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:45,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:45,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:45,010 INFO L87 Difference]: Start difference. First operand 61 states and 73 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 05:04:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:45,183 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2024-11-28 05:04:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:45,184 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 130 [2024-11-28 05:04:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:45,187 INFO L225 Difference]: With dead ends: 114 [2024-11-28 05:04:45,190 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 05:04:45,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:04:45,192 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:45,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:04:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 05:04:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-11-28 05:04:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 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 05:04:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-28 05:04:45,214 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 130 [2024-11-28 05:04:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:45,215 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-28 05:04:45,215 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 05:04:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-28 05:04:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 05:04:45,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:45,218 INFO L218 NwaCegarLoop]: trace histogram [16, 13, 13, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 3, 1, 1, 1, 1, 1] [2024-11-28 05:04:45,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:04:45,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:04:45,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:45,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1222003313, now seen corresponding path program 4 times [2024-11-28 05:04:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:45,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149436819] [2024-11-28 05:04:45,421 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:45,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:45,462 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:45,463 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 112 proven. 276 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-11-28 05:04:45,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149436819] [2024-11-28 05:04:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149436819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522828805] [2024-11-28 05:04:45,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:45,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:45,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:45,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:04:45,867 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:45,868 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:45,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:04:45,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 344 proven. 189 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-28 05:04:46,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 133 proven. 313 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 05:04:46,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522828805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:46,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 19 [2024-11-28 05:04:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872898985] [2024-11-28 05:04:46,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:46,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:04:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:46,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:04:46,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:04:46,897 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-28 05:04:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:47,305 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-28 05:04:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:04:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) Word has length 144 [2024-11-28 05:04:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:47,308 INFO L225 Difference]: With dead ends: 126 [2024-11-28 05:04:47,309 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 05:04:47,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 278 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2024-11-28 05:04:47,312 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:47,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 118 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:04:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 05:04:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2024-11-28 05:04:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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 05:04:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-28 05:04:47,331 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 144 [2024-11-28 05:04:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:47,331 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-28 05:04:47,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-28 05:04:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-28 05:04:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 05:04:47,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:47,333 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-28 05:04:47,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:47,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:47,534 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:47,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1765439256, now seen corresponding path program 5 times [2024-11-28 05:04:47,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:47,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505394791] [2024-11-28 05:04:47,535 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:47,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:47,556 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 05:04:47,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-28 05:04:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505394791] [2024-11-28 05:04:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505394791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748214293] [2024-11-28 05:04:47,912 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:47,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:47,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:47,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:47,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:04:47,999 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 05:04:47,999 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:48,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:04:48,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-28 05:04:48,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-28 05:04:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748214293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:48,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:48,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 24 [2024-11-28 05:04:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639605560] [2024-11-28 05:04:48,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:48,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 05:04:48,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:48,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 05:04:48,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:04:48,923 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 25 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 25 states have internal predecessors, (73), 6 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 14 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-28 05:04:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:49,041 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2024-11-28 05:04:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 25 states have internal predecessors, (73), 6 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 14 states have call predecessors, (17), 6 states have call successors, (17) Word has length 90 [2024-11-28 05:04:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:49,043 INFO L225 Difference]: With dead ends: 63 [2024-11-28 05:04:49,043 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 05:04:49,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 162 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:04:49,044 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:49,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 181 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:04:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 05:04:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-28 05:04:49,052 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 05:04:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-28 05:04:49,053 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 90 [2024-11-28 05:04:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:49,054 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-28 05:04:49,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 25 states have internal predecessors, (73), 6 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 14 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-28 05:04:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-28 05:04:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:04:49,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:49,056 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 05:04:49,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:04:49,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:49,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:49,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1805488148, now seen corresponding path program 2 times [2024-11-28 05:04:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063977709] [2024-11-28 05:04:49,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:49,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:49,305 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:49,305 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:49,996 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 05:04:49,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063977709] [2024-11-28 05:04:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063977709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633779102] [2024-11-28 05:04:49,997 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:50,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:50,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:04:50,100 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:50,100 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:50,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:04:50,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 143 proven. 182 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-28 05:04:50,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 143 proven. 202 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-28 05:04:51,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633779102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:51,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:51,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 30 [2024-11-28 05:04:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593757610] [2024-11-28 05:04:51,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:51,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 05:04:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:51,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 05:04:51,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-11-28 05:04:51,532 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-28 05:04:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:52,400 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2024-11-28 05:04:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:04:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) Word has length 124 [2024-11-28 05:04:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:52,403 INFO L225 Difference]: With dead ends: 136 [2024-11-28 05:04:52,403 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 05:04:52,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 05:04:52,406 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:52,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 124 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:04:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 05:04:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-28 05:04:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 55 states have internal predecessors, (60), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 05:04:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-11-28 05:04:52,416 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 124 [2024-11-28 05:04:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:52,416 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-11-28 05:04:52,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 16 states have call successors, (18), 1 states have call predecessors, (18), 12 states have return successors, (24), 15 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-28 05:04:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-11-28 05:04:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 05:04:52,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:52,421 INFO L218 NwaCegarLoop]: trace histogram [26, 23, 21, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 10, 8, 5, 1, 1, 1, 1, 1] [2024-11-28 05:04:52,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:04:52,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:52,626 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:52,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:52,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1852602920, now seen corresponding path program 3 times [2024-11-28 05:04:52,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:52,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910128483] [2024-11-28 05:04:52,627 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:52,680 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 05:04:52,680 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 554 proven. 189 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2024-11-28 05:04:53,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:53,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910128483] [2024-11-28 05:04:53,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910128483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:53,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661555774] [2024-11-28 05:04:53,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:53,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:53,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:53,559 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:53,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:04:53,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 05:04:53,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:53,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 05:04:53,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 554 proven. 135 refuted. 0 times theorem prover too weak. 1340 trivial. 0 not checked. [2024-11-28 05:04:54,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 620 proven. 128 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2024-11-28 05:04:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661555774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:55,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:55,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2024-11-28 05:04:55,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232202895] [2024-11-28 05:04:55,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:55,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:04:55,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:55,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:04:55,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:04:55,988 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 32 states, 31 states have (on average 3.032258064516129) internal successors, (94), 32 states have internal predecessors, (94), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 22 states have call predecessors, (23), 8 states have call successors, (23) [2024-11-28 05:04:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:56,310 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-11-28 05:04:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 05:04:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.032258064516129) internal successors, (94), 32 states have internal predecessors, (94), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 22 states have call predecessors, (23), 8 states have call successors, (23) Word has length 243 [2024-11-28 05:04:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:56,313 INFO L225 Difference]: With dead ends: 117 [2024-11-28 05:04:56,313 INFO L226 Difference]: Without dead ends: 116 [2024-11-28 05:04:56,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 470 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 05:04:56,315 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:56,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 186 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:04:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-28 05:04:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-11-28 05:04:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 76 states have internal predecessors, (81), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (37), 14 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-28 05:04:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2024-11-28 05:04:56,331 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 243 [2024-11-28 05:04:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:56,331 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2024-11-28 05:04:56,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.032258064516129) internal successors, (94), 32 states have internal predecessors, (94), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 22 states have call predecessors, (23), 8 states have call successors, (23) [2024-11-28 05:04:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2024-11-28 05:04:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-28 05:04:56,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:56,339 INFO L218 NwaCegarLoop]: trace histogram [39, 38, 31, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 12, 8, 1, 1, 1, 1, 1] [2024-11-28 05:04:56,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:04:56,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:04:56,543 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:56,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1326333035, now seen corresponding path program 4 times [2024-11-28 05:04:56,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:56,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483681624] [2024-11-28 05:04:56,544 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:56,606 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:56,606 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 428 proven. 1234 refuted. 0 times theorem prover too weak. 3401 trivial. 0 not checked. [2024-11-28 05:04:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483681624] [2024-11-28 05:04:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483681624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946818896] [2024-11-28 05:04:56,983 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:56,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:56,987 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:57,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:04:57,204 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:57,205 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:57,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:04:57,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 389 proven. 1723 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-11-28 05:04:57,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5063 backedges. 389 proven. 1762 refuted. 0 times theorem prover too weak. 2912 trivial. 0 not checked. [2024-11-28 05:04:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946818896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:59,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:59,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 24 [2024-11-28 05:04:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675646404] [2024-11-28 05:04:59,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:59,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:04:59,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:59,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:04:59,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:04:59,466 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-28 05:05:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:00,059 INFO L93 Difference]: Finished difference Result 214 states and 308 transitions. [2024-11-28 05:05:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:05:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) Word has length 379 [2024-11-28 05:05:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:00,062 INFO L225 Difference]: With dead ends: 214 [2024-11-28 05:05:00,062 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 05:05:00,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 744 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=416, Invalid=1144, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 05:05:00,066 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 182 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:00,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 124 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:05:00,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 05:05:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2024-11-28 05:05:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.036144578313253) internal successors, (86), 81 states have internal predecessors, (86), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (34), 14 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 05:05:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-11-28 05:05:00,086 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 379 [2024-11-28 05:05:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:00,087 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-11-28 05:05:00,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (28), 12 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-28 05:05:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-11-28 05:05:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 05:05:00,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:00,092 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 05:05:00,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:00,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:05:00,297 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:05:00,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2085379565, now seen corresponding path program 5 times [2024-11-28 05:05:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699899647] [2024-11-28 05:05:00,298 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:00,347 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 05:05:00,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 767 proven. 782 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2024-11-28 05:05:00,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699899647] [2024-11-28 05:05:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699899647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125904045] [2024-11-28 05:05:00,935 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:00,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:00,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:00,938 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:00,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:05:01,128 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 05:05:01,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:01,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:05:01,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 814 proven. 814 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2024-11-28 05:05:01,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 822 proven. 861 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2024-11-28 05:05:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125904045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:03,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 27 [2024-11-28 05:05:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631047372] [2024-11-28 05:05:03,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:03,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:05:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:03,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:05:03,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-28 05:05:03,448 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 18 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-28 05:05:04,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:04,213 INFO L93 Difference]: Finished difference Result 264 states and 349 transitions. [2024-11-28 05:05:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:05:04,215 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 18 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) Word has length 301 [2024-11-28 05:05:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:04,220 INFO L225 Difference]: With dead ends: 264 [2024-11-28 05:05:04,220 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 05:05:04,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 589 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=668, Invalid=1984, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 05:05:04,224 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 212 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:04,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 161 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:05:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 05:05:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2024-11-28 05:05:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 102 states have internal predecessors, (111), 15 states have call successors, (15), 11 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 05:05:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2024-11-28 05:05:04,253 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 301 [2024-11-28 05:05:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:04,255 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2024-11-28 05:05:04,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 18 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-28 05:05:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2024-11-28 05:05:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 05:05:04,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:04,265 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 05:05:04,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:05:04,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:05:04,466 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:05:04,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:04,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1264030145, now seen corresponding path program 6 times [2024-11-28 05:05:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:04,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952830067] [2024-11-28 05:05:04,468 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:04,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:04,558 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 05:05:04,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 688 proven. 794 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2024-11-28 05:05:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952830067] [2024-11-28 05:05:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952830067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392864584] [2024-11-28 05:05:05,092 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:05,096 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:05,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:05:05,308 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 05:05:05,308 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:05,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:05:05,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 690 proven. 793 refuted. 0 times theorem prover too weak. 1667 trivial. 0 not checked. [2024-11-28 05:05:05,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 706 proven. 824 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2024-11-28 05:05:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392864584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:07,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:07,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2024-11-28 05:05:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023300176] [2024-11-28 05:05:07,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:07,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:05:07,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:07,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:05:07,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:05:07,402 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 16 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-28 05:05:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:07,970 INFO L93 Difference]: Finished difference Result 262 states and 351 transitions. [2024-11-28 05:05:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:05:07,971 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 16 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 16 states have call successors, (27) Word has length 301 [2024-11-28 05:05:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:07,975 INFO L225 Difference]: With dead ends: 262 [2024-11-28 05:05:07,977 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 05:05:07,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 590 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 05:05:07,980 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 99 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:07,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 236 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:05:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 05:05:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-11-28 05:05:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 97 states have internal predecessors, (102), 16 states have call successors, (16), 12 states have call predecessors, (16), 7 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) [2024-11-28 05:05:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2024-11-28 05:05:07,999 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 301 [2024-11-28 05:05:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:08,001 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2024-11-28 05:05:08,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 16 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (27), 14 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-28 05:05:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2024-11-28 05:05:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-28 05:05:08,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:08,006 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 05:05:08,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:08,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:05:08,211 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:05:08,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1368637202, now seen corresponding path program 7 times [2024-11-28 05:05:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:08,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033654743] [2024-11-28 05:05:08,212 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 830 proven. 1470 refuted. 0 times theorem prover too weak. 3503 trivial. 0 not checked. [2024-11-28 05:05:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033654743] [2024-11-28 05:05:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033654743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650340338] [2024-11-28 05:05:11,832 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:11,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:11,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:11,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:11,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:05:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:12,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 05:05:12,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:12,732 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 05:05:12,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:21,782 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 05:05:21,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650340338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:21,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:21,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2024-11-28 05:05:21,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115125258] [2024-11-28 05:05:21,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:21,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 05:05:21,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:21,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 05:05:21,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 05:05:21,786 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2024-11-28 05:05:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:22,140 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2024-11-28 05:05:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 05:05:22,141 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) Word has length 405 [2024-11-28 05:05:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:22,144 INFO L225 Difference]: With dead ends: 168 [2024-11-28 05:05:22,144 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 05:05:22,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 794 SyntacticMatches, 51 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=591, Invalid=2061, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 05:05:22,147 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:22,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 224 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:05:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 05:05:22,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 149. [2024-11-28 05:05:22,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 118 states have internal predecessors, (123), 19 states have call successors, (19), 12 states have call predecessors, (19), 10 states have return successors, (60), 18 states have call predecessors, (60), 18 states have call successors, (60) [2024-11-28 05:05:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2024-11-28 05:05:22,166 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 405 [2024-11-28 05:05:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:22,167 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2024-11-28 05:05:22,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2024-11-28 05:05:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2024-11-28 05:05:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2024-11-28 05:05:22,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:22,176 INFO L218 NwaCegarLoop]: trace histogram [93, 92, 75, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1, 1] [2024-11-28 05:05:22,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:05:22,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:05:22,381 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:05:22,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1447574050, now seen corresponding path program 8 times [2024-11-28 05:05:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:22,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787149899] [2024-11-28 05:05:22,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:22,506 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:22,506 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 1430 proven. 5737 refuted. 0 times theorem prover too weak. 22886 trivial. 0 not checked. [2024-11-28 05:05:24,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:24,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787149899] [2024-11-28 05:05:24,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787149899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:24,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703513175] [2024-11-28 05:05:24,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:24,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:24,154 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:24,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:05:24,660 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:24,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:24,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 05:05:24,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 1688 proven. 6747 refuted. 0 times theorem prover too weak. 21618 trivial. 0 not checked. [2024-11-28 05:05:24,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30053 backedges. 1688 proven. 6862 refuted. 0 times theorem prover too weak. 21503 trivial. 0 not checked. [2024-11-28 05:05:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703513175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:28,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-28 05:05:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130688320] [2024-11-28 05:05:28,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:28,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:05:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:28,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:05:28,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:05:28,699 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-28 05:05:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:05:29,334 INFO L93 Difference]: Finished difference Result 331 states and 496 transitions. [2024-11-28 05:05:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 05:05:29,335 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) Word has length 909 [2024-11-28 05:05:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:05:29,338 INFO L225 Difference]: With dead ends: 331 [2024-11-28 05:05:29,338 INFO L226 Difference]: Without dead ends: 188 [2024-11-28 05:05:29,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1800 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 05:05:29,342 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 260 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:05:29,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 198 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:05:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-28 05:05:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 158. [2024-11-28 05:05:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 127 states have (on average 1.031496062992126) internal successors, (131), 125 states have internal predecessors, (131), 20 states have call successors, (20), 14 states have call predecessors, (20), 10 states have return successors, (57), 18 states have call predecessors, (57), 19 states have call successors, (57) [2024-11-28 05:05:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2024-11-28 05:05:29,362 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 909 [2024-11-28 05:05:29,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:29,362 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2024-11-28 05:05:29,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.6875) internal successors, (182), 32 states have internal predecessors, (182), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-28 05:05:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2024-11-28 05:05:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2024-11-28 05:05:29,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:29,376 INFO L218 NwaCegarLoop]: trace histogram [129, 123, 105, 66, 66, 66, 66, 62, 62, 62, 62, 62, 61, 61, 61, 60, 39, 24, 1, 1, 1, 1, 1] [2024-11-28 05:05:29,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:05:29,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:29,577 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:05:29,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash 700024010, now seen corresponding path program 9 times [2024-11-28 05:05:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:29,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203815755] [2024-11-28 05:05:29,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:29,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:29,775 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-11-28 05:05:29,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 16280 proven. 6125 refuted. 0 times theorem prover too weak. 34062 trivial. 0 not checked. [2024-11-28 05:05:43,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:43,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203815755] [2024-11-28 05:05:43,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203815755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:43,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356639193] [2024-11-28 05:05:43,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:43,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:43,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:43,315 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:43,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:05:43,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-11-28 05:05:43,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:44,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-28 05:05:44,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 16360 proven. 4596 refuted. 0 times theorem prover too weak. 35511 trivial. 0 not checked. [2024-11-28 05:05:44,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 17227 proven. 4261 refuted. 0 times theorem prover too weak. 34979 trivial. 0 not checked. [2024-11-28 05:06:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356639193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:19,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:19,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 38] total 53 [2024-11-28 05:06:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054059404] [2024-11-28 05:06:19,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:19,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 05:06:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:19,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 05:06:19,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 05:06:19,345 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) [2024-11-28 05:06:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:19,785 INFO L93 Difference]: Finished difference Result 216 states and 319 transitions. [2024-11-28 05:06:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:06:19,785 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) Word has length 1242 [2024-11-28 05:06:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:19,791 INFO L225 Difference]: With dead ends: 216 [2024-11-28 05:06:19,794 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 05:06:19,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2654 GetRequests, 2476 SyntacticMatches, 119 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6499 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=784, Invalid=2876, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 05:06:19,796 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:19,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 198 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:06:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 05:06:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 176. [2024-11-28 05:06:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 139 states have internal predecessors, (145), 22 states have call successors, (22), 14 states have call predecessors, (22), 12 states have return successors, (85), 22 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-28 05:06:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 252 transitions. [2024-11-28 05:06:19,842 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 252 transitions. Word has length 1242 [2024-11-28 05:06:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:19,844 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 252 transitions. [2024-11-28 05:06:19,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) [2024-11-28 05:06:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 252 transitions. [2024-11-28 05:06:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1898 [2024-11-28 05:06:19,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:19,877 INFO L218 NwaCegarLoop]: trace histogram [195, 191, 158, 98, 98, 98, 98, 96, 96, 96, 96, 96, 95, 95, 95, 94, 60, 37, 1, 1, 1, 1, 1] [2024-11-28 05:06:19,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 05:06:20,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:20,078 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:06:20,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash -7426598, now seen corresponding path program 10 times [2024-11-28 05:06:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:20,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367993794] [2024-11-28 05:06:20,079 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:06:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:20,278 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:06:20,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 132417 backedges. 2433 proven. 15333 refuted. 0 times theorem prover too weak. 114651 trivial. 0 not checked. [2024-11-28 05:06:22,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:22,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367993794] [2024-11-28 05:06:22,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367993794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:22,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117051113] [2024-11-28 05:06:22,662 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:06:22,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:22,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:06:23,603 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:06:23,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:23,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 05:06:23,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 132417 backedges. 68023 proven. 5564 refuted. 0 times theorem prover too weak. 58830 trivial. 0 not checked. [2024-11-28 05:06:23,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 132417 backedges. 2937 proven. 17973 refuted. 0 times theorem prover too weak. 111507 trivial. 0 not checked. [2024-11-28 05:06:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117051113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:29,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:29,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 29] total 34 [2024-11-28 05:06:29,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835098450] [2024-11-28 05:06:29,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:29,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 05:06:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:29,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 05:06:29,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 05:06:29,706 INFO L87 Difference]: Start difference. First operand 176 states and 252 transitions. Second operand has 34 states, 34 states have (on average 6.0) internal successors, (204), 34 states have internal predecessors, (204), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 05:06:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:30,722 INFO L93 Difference]: Finished difference Result 428 states and 705 transitions. [2024-11-28 05:06:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 05:06:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.0) internal successors, (204), 34 states have internal predecessors, (204), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) Word has length 1897 [2024-11-28 05:06:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:30,728 INFO L225 Difference]: With dead ends: 428 [2024-11-28 05:06:30,728 INFO L226 Difference]: Without dead ends: 258 [2024-11-28 05:06:30,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3859 GetRequests, 3775 SyntacticMatches, 17 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1170, Invalid=3522, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 05:06:30,734 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 607 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:30,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 196 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:06:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-28 05:06:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 230. [2024-11-28 05:06:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 185 states have (on average 1.0324324324324323) internal successors, (191), 182 states have internal predecessors, (191), 29 states have call successors, (29), 18 states have call predecessors, (29), 15 states have return successors, (110), 29 states have call predecessors, (110), 28 states have call successors, (110) [2024-11-28 05:06:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 330 transitions. [2024-11-28 05:06:30,767 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 330 transitions. Word has length 1897 [2024-11-28 05:06:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:30,768 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 330 transitions. [2024-11-28 05:06:30,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.0) internal successors, (204), 34 states have internal predecessors, (204), 29 states have call successors, (36), 4 states have call predecessors, (36), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 05:06:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 330 transitions. [2024-11-28 05:06:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2024-11-28 05:06:30,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:30,795 INFO L218 NwaCegarLoop]: trace histogram [168, 166, 136, 84, 84, 84, 84, 83, 83, 83, 83, 83, 83, 83, 83, 82, 52, 32, 1, 1, 1, 1, 1] [2024-11-28 05:06:30,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 05:06:30,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:30,996 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:06:30,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash 231613447, now seen corresponding path program 11 times [2024-11-28 05:06:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:30,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266143433] [2024-11-28 05:06:30,997 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:06:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:31,276 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) [2024-11-28 05:06:31,276 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 98905 backedges. 4327 proven. 12264 refuted. 0 times theorem prover too weak. 82314 trivial. 0 not checked. [2024-11-28 05:06:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266143433] [2024-11-28 05:06:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266143433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870214488] [2024-11-28 05:06:33,798 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:06:33,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:33,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:33,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:06:35,179 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 92 check-sat command(s) [2024-11-28 05:06:35,179 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:35,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 05:06:35,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 98905 backedges. 48233 proven. 1448 refuted. 0 times theorem prover too weak. 49224 trivial. 0 not checked. [2024-11-28 05:06:35,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 98905 backedges. 4315 proven. 12348 refuted. 0 times theorem prover too weak. 82242 trivial. 0 not checked. [2024-11-28 05:06:42,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870214488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:42,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:42,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 25] total 29 [2024-11-28 05:06:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917904522] [2024-11-28 05:06:42,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:42,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 05:06:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:42,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 05:06:42,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2024-11-28 05:06:42,611 INFO L87 Difference]: Start difference. First operand 230 states and 330 transitions. Second operand has 29 states, 29 states have (on average 6.0) internal successors, (174), 29 states have internal predecessors, (174), 24 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (38), 15 states have call predecessors, (38), 24 states have call successors, (38) [2024-11-28 05:06:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:43,259 INFO L93 Difference]: Finished difference Result 433 states and 644 transitions. [2024-11-28 05:06:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 05:06:43,260 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.0) internal successors, (174), 29 states have internal predecessors, (174), 24 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (38), 15 states have call predecessors, (38), 24 states have call successors, (38) Word has length 1641 [2024-11-28 05:06:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:43,264 INFO L225 Difference]: With dead ends: 433 [2024-11-28 05:06:43,264 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 05:06:43,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3322 GetRequests, 3268 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=1396, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 05:06:43,271 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 106 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:43,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 257 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:06:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 05:06:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 176. [2024-11-28 05:06:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 142 states have (on average 1.028169014084507) internal successors, (146), 139 states have internal predecessors, (146), 22 states have call successors, (22), 16 states have call predecessors, (22), 11 states have return successors, (60), 20 states have call predecessors, (60), 21 states have call successors, (60) [2024-11-28 05:06:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2024-11-28 05:06:43,302 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 1641 [2024-11-28 05:06:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:43,304 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2024-11-28 05:06:43,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.0) internal successors, (174), 29 states have internal predecessors, (174), 24 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (38), 15 states have call predecessors, (38), 24 states have call successors, (38) [2024-11-28 05:06:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2024-11-28 05:06:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1996 [2024-11-28 05:06:43,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:43,342 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 05:06:43,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:06:43,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:43,547 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:06:43,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1394743521, now seen corresponding path program 12 times [2024-11-28 05:06:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444353948] [2024-11-28 05:06:43,548 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:06:43,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:44,004 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2024-11-28 05:06:44,004 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 146524 backedges. 7229 proven. 18638 refuted. 0 times theorem prover too weak. 120657 trivial. 0 not checked. [2024-11-28 05:06:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444353948] [2024-11-28 05:06:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444353948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416055913] [2024-11-28 05:06:47,995 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:06:47,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:47,997 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:47,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:06:49,299 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2024-11-28 05:06:49,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:49,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 2396 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:06:49,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 146524 backedges. 71366 proven. 9252 refuted. 0 times theorem prover too weak. 65906 trivial. 0 not checked. [2024-11-28 05:06:49,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 146524 backedges. 6677 proven. 17778 refuted. 0 times theorem prover too weak. 122069 trivial. 0 not checked. [2024-11-28 05:06:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416055913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:56,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 34] total 41 [2024-11-28 05:06:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023274975] [2024-11-28 05:06:56,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:56,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 05:06:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:56,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 05:06:56,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1385, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 05:06:56,564 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand has 41 states, 41 states have (on average 5.853658536585366) internal successors, (240), 40 states have internal predecessors, (240), 35 states have call successors, (43), 6 states have call predecessors, (43), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) [2024-11-28 05:06:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:57,896 INFO L93 Difference]: Finished difference Result 462 states and 682 transitions. [2024-11-28 05:06:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-28 05:06:57,897 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.853658536585366) internal successors, (240), 40 states have internal predecessors, (240), 35 states have call successors, (43), 6 states have call predecessors, (43), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) Word has length 1995 [2024-11-28 05:06:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:57,901 INFO L225 Difference]: With dead ends: 462 [2024-11-28 05:06:57,901 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 05:06:57,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4081 GetRequests, 3974 SyntacticMatches, 17 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1877, Invalid=6495, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 05:06:57,906 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 592 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:57,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 295 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:06:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 05:06:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 260. [2024-11-28 05:06:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 212 states have (on average 1.0377358490566038) internal successors, (220), 207 states have internal predecessors, (220), 34 states have call successors, (34), 27 states have call predecessors, (34), 13 states have return successors, (93), 25 states have call predecessors, (93), 33 states have call successors, (93) [2024-11-28 05:06:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 347 transitions. [2024-11-28 05:06:57,945 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 347 transitions. Word has length 1995 [2024-11-28 05:06:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:57,947 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 347 transitions. [2024-11-28 05:06:57,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.853658536585366) internal successors, (240), 40 states have internal predecessors, (240), 35 states have call successors, (43), 6 states have call predecessors, (43), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) [2024-11-28 05:06:57,948 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 347 transitions. [2024-11-28 05:06:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2024-11-28 05:06:57,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:57,967 INFO L218 NwaCegarLoop]: trace histogram [145, 144, 117, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 72, 71, 45, 28, 1, 1, 1, 1, 1] [2024-11-28 05:06:57,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 05:06:58,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 05:06:58,168 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:06:58,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1470223252, now seen corresponding path program 13 times [2024-11-28 05:06:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818721172] [2024-11-28 05:06:58,169 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:06:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 73818 backedges. 8029 proven. 3643 refuted. 0 times theorem prover too weak. 62146 trivial. 0 not checked. [2024-11-28 05:07:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818721172] [2024-11-28 05:07:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818721172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579816135] [2024-11-28 05:07:00,909 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:07:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:00,911 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:00,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:07:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:01,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 05:07:01,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 73818 backedges. 37806 proven. 5527 refuted. 0 times theorem prover too weak. 30485 trivial. 0 not checked. [2024-11-28 05:07:02,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 73818 backedges. 5120 proven. 11737 refuted. 0 times theorem prover too weak. 56961 trivial. 0 not checked. [2024-11-28 05:07:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579816135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:10,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:10,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 31] total 36 [2024-11-28 05:07:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291518142] [2024-11-28 05:07:10,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:10,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 05:07:10,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:10,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 05:07:10,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 05:07:10,889 INFO L87 Difference]: Start difference. First operand 260 states and 347 transitions. Second operand has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) [2024-11-28 05:07:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:11,720 INFO L93 Difference]: Finished difference Result 538 states and 758 transitions. [2024-11-28 05:07:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:07:11,721 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) Word has length 1419 [2024-11-28 05:07:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:11,726 INFO L225 Difference]: With dead ends: 538 [2024-11-28 05:07:11,726 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 05:07:11,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2883 GetRequests, 2813 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 05:07:11,729 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 140 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:11,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 323 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:07:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 05:07:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 218. [2024-11-28 05:07:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 174 states have internal predecessors, (182), 29 states have call successors, (29), 23 states have call predecessors, (29), 11 states have return successors, (77), 20 states have call predecessors, (77), 28 states have call successors, (77) [2024-11-28 05:07:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 288 transitions. [2024-11-28 05:07:11,756 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 288 transitions. Word has length 1419 [2024-11-28 05:07:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:11,757 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 288 transitions. [2024-11-28 05:07:11,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) [2024-11-28 05:07:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 288 transitions. [2024-11-28 05:07:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2024-11-28 05:07:11,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:11,776 INFO L218 NwaCegarLoop]: trace histogram [152, 150, 123, 76, 76, 76, 76, 75, 75, 75, 75, 75, 75, 75, 75, 74, 47, 29, 1, 1, 1, 1, 1] [2024-11-28 05:07:11,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 05:07:11,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 05:07:11,977 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:11,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash -391414713, now seen corresponding path program 14 times [2024-11-28 05:07:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497412924] [2024-11-28 05:07:11,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:12,128 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:12,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 80780 backedges. 6669 proven. 10102 refuted. 0 times theorem prover too weak. 64009 trivial. 0 not checked. [2024-11-28 05:07:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497412924] [2024-11-28 05:07:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497412924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134691302] [2024-11-28 05:07:15,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:15,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:15,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:15,591 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:15,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 05:07:16,565 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:16,565 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:16,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:07:16,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 80780 backedges. 7451 proven. 10882 refuted. 0 times theorem prover too weak. 62447 trivial. 0 not checked. [2024-11-28 05:07:16,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 80780 backedges. 7451 proven. 11117 refuted. 0 times theorem prover too weak. 62212 trivial. 0 not checked. [2024-11-28 05:07:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134691302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:24,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:24,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 35] total 40 [2024-11-28 05:07:24,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872693577] [2024-11-28 05:07:24,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:24,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 05:07:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:24,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 05:07:24,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 05:07:24,337 INFO L87 Difference]: Start difference. First operand 218 states and 288 transitions. Second operand has 40 states, 40 states have (on average 5.55) internal successors, (222), 40 states have internal predecessors, (222), 33 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-28 05:07:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:25,484 INFO L93 Difference]: Finished difference Result 460 states and 629 transitions. [2024-11-28 05:07:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:07:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.55) internal successors, (222), 40 states have internal predecessors, (222), 33 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) Word has length 1484 [2024-11-28 05:07:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:25,497 INFO L225 Difference]: With dead ends: 460 [2024-11-28 05:07:25,499 INFO L226 Difference]: Without dead ends: 248 [2024-11-28 05:07:25,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3024 GetRequests, 2945 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=999, Invalid=3033, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 05:07:25,503 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 405 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:25,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 341 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:07:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-28 05:07:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 188. [2024-11-28 05:07:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 150 states have internal predecessors, (154), 25 states have call successors, (25), 18 states have call predecessors, (25), 11 states have return successors, (68), 19 states have call predecessors, (68), 24 states have call successors, (68) [2024-11-28 05:07:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-11-28 05:07:25,544 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 1484 [2024-11-28 05:07:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:25,546 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-11-28 05:07:25,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.55) internal successors, (222), 40 states have internal predecessors, (222), 33 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-28 05:07:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-11-28 05:07:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2024-11-28 05:07:25,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:25,595 INFO L218 NwaCegarLoop]: trace histogram [178, 176, 144, 89, 89, 89, 89, 88, 88, 88, 88, 88, 88, 88, 88, 87, 55, 34, 1, 1, 1, 1, 1] [2024-11-28 05:07:25,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 05:07:25,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 05:07:25,796 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:25,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 180692526, now seen corresponding path program 15 times [2024-11-28 05:07:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633399553] [2024-11-28 05:07:25,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:07:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:26,345 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 128 check-sat command(s) [2024-11-28 05:07:26,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 111146 backedges. 20569 proven. 26331 refuted. 0 times theorem prover too weak. 64246 trivial. 0 not checked. [2024-11-28 05:08:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633399553] [2024-11-28 05:08:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633399553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975138319] [2024-11-28 05:08:48,254 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:08:48,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:48,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:48,256 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:48,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:08:50,005 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 128 check-sat command(s) [2024-11-28 05:08:50,005 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:50,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 353 conjuncts are in the unsatisfiable core [2024-11-28 05:08:50,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 111146 backedges. 18335 proven. 20554 refuted. 0 times theorem prover too weak. 72257 trivial. 0 not checked. [2024-11-28 05:08:51,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 111146 backedges. 20425 proven. 19669 refuted. 0 times theorem prover too weak. 71052 trivial. 0 not checked. [2024-11-28 05:11:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975138319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:25,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:11:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27, 47] total 68 [2024-11-28 05:11:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618490459] [2024-11-28 05:11:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:25,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 05:11:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:25,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 05:11:25,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1045, Invalid=3647, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 05:11:25,607 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 69 states, 68 states have (on average 2.588235294117647) internal successors, (176), 69 states have internal predecessors, (176), 18 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2024-11-28 05:11:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:25,905 INFO L93 Difference]: Finished difference Result 219 states and 307 transitions. [2024-11-28 05:11:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:11:25,906 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 2.588235294117647) internal successors, (176), 69 states have internal predecessors, (176), 18 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) Word has length 1739 [2024-11-28 05:11:25,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:25,910 INFO L225 Difference]: With dead ends: 219 [2024-11-28 05:11:25,910 INFO L226 Difference]: Without dead ends: 218 [2024-11-28 05:11:25,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3833 GetRequests, 3437 SyntacticMatches, 325 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17374 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1162, Invalid=4094, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 05:11:25,912 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:25,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 215 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:11:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-28 05:11:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 209. [2024-11-28 05:11:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 168 states have (on average 1.0178571428571428) internal successors, (171), 166 states have internal predecessors, (171), 27 states have call successors, (27), 18 states have call predecessors, (27), 13 states have return successors, (94), 24 states have call predecessors, (94), 26 states have call successors, (94) [2024-11-28 05:11:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2024-11-28 05:11:25,936 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 1739 [2024-11-28 05:11:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:25,938 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2024-11-28 05:11:25,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 2.588235294117647) internal successors, (176), 69 states have internal predecessors, (176), 18 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2024-11-28 05:11:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2024-11-28 05:11:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3486 [2024-11-28 05:11:25,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:25,995 INFO L218 NwaCegarLoop]: trace histogram [356, 354, 288, 178, 178, 178, 178, 177, 177, 177, 177, 177, 177, 177, 177, 176, 110, 68, 1, 1, 1, 1, 1] [2024-11-28 05:11:26,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 05:11:26,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 05:11:26,195 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:11:26,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1559999349, now seen corresponding path program 16 times [2024-11-28 05:11:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:26,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568220395] [2024-11-28 05:11:26,196 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:11:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:26,553 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:11:26,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 16173 proven. 36900 refuted. 0 times theorem prover too weak. 395888 trivial. 0 not checked. [2024-11-28 05:11:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568220395] [2024-11-28 05:11:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568220395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487227480] [2024-11-28 05:11:33,546 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:11:33,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:33,548 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:33,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:11:35,705 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:11:35,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:11:35,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 4311 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 05:11:35,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 18244 proven. 38879 refuted. 0 times theorem prover too weak. 391838 trivial. 0 not checked. [2024-11-28 05:11:36,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 18244 proven. 39266 refuted. 0 times theorem prover too weak. 391451 trivial. 0 not checked. [2024-11-28 05:11:51,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487227480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:51,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:11:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 43] total 48 [2024-11-28 05:11:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126594934] [2024-11-28 05:11:51,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:51,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 05:11:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:51,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 05:11:51,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 05:11:51,551 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) [2024-11-28 05:11:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:52,939 INFO L93 Difference]: Finished difference Result 482 states and 751 transitions. [2024-11-28 05:11:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 05:11:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) Word has length 3485 [2024-11-28 05:11:52,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:52,946 INFO L225 Difference]: With dead ends: 482 [2024-11-28 05:11:52,946 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 05:11:52,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7058 GetRequests, 6945 SyntacticMatches, 21 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2024, Invalid=6718, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 05:11:52,949 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 865 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:52,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 420 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:11:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 05:11:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 266. [2024-11-28 05:11:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 216 states have (on average 1.0231481481481481) internal successors, (221), 212 states have internal predecessors, (221), 35 states have call successors, (35), 26 states have call predecessors, (35), 14 states have return successors, (112), 27 states have call predecessors, (112), 34 states have call successors, (112) [2024-11-28 05:11:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 368 transitions. [2024-11-28 05:11:52,980 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 368 transitions. Word has length 3485 [2024-11-28 05:11:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:52,981 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 368 transitions. [2024-11-28 05:11:52,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) [2024-11-28 05:11:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 368 transitions. [2024-11-28 05:11:53,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3486 [2024-11-28 05:11:53,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:53,062 INFO L218 NwaCegarLoop]: trace histogram [356, 354, 288, 178, 178, 178, 178, 177, 177, 177, 177, 177, 177, 177, 177, 176, 110, 68, 1, 1, 1, 1, 1] [2024-11-28 05:11:53,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:53,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 05:11:53,262 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:11:53,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash 337664429, now seen corresponding path program 17 times [2024-11-28 05:11:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:53,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717302764] [2024-11-28 05:11:53,264 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:11:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:54,666 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 241 check-sat command(s) [2024-11-28 05:11:54,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:12:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 22345 proven. 28155 refuted. 0 times theorem prover too weak. 398461 trivial. 0 not checked. [2024-11-28 05:12:10,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717302764] [2024-11-28 05:12:10,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717302764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406750543] [2024-11-28 05:12:10,911 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:12:10,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:10,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:10,913 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:10,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:12:15,483 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 241 check-sat command(s) [2024-11-28 05:12:15,483 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:12:15,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 6025 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 05:12:15,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 212801 proven. 12166 refuted. 0 times theorem prover too weak. 223994 trivial. 0 not checked. [2024-11-28 05:12:15,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:12:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 22283 proven. 28400 refuted. 0 times theorem prover too weak. 398278 trivial. 0 not checked. [2024-11-28 05:12:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406750543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:12:29,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:12:29,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 37] total 43 [2024-11-28 05:12:29,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483422812] [2024-11-28 05:12:29,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:12:29,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 05:12:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:29,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 05:12:29,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1460, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 05:12:29,353 INFO L87 Difference]: Start difference. First operand 266 states and 368 transitions. Second operand has 43 states, 43 states have (on average 5.8604651162790695) internal successors, (252), 43 states have internal predecessors, (252), 38 states have call successors, (44), 2 states have call predecessors, (44), 19 states have return successors, (60), 23 states have call predecessors, (60), 38 states have call successors, (60) [2024-11-28 05:12:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:30,212 INFO L93 Difference]: Finished difference Result 565 states and 782 transitions. [2024-11-28 05:12:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 05:12:30,213 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.8604651162790695) internal successors, (252), 43 states have internal predecessors, (252), 38 states have call successors, (44), 2 states have call predecessors, (44), 19 states have return successors, (60), 23 states have call predecessors, (60), 38 states have call successors, (60) Word has length 3485 [2024-11-28 05:12:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:30,219 INFO L225 Difference]: With dead ends: 565 [2024-11-28 05:12:30,219 INFO L226 Difference]: Without dead ends: 305 [2024-11-28 05:12:30,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7032 GetRequests, 6950 SyntacticMatches, 18 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1059, Invalid=3231, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 05:12:30,222 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 424 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:30,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 328 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:12:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-28 05:12:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 245. [2024-11-28 05:12:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 199 states have (on average 1.020100502512563) internal successors, (203), 196 states have internal predecessors, (203), 33 states have call successors, (33), 26 states have call predecessors, (33), 12 states have return successors, (77), 22 states have call predecessors, (77), 32 states have call successors, (77) [2024-11-28 05:12:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 313 transitions. [2024-11-28 05:12:30,247 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 313 transitions. Word has length 3485 [2024-11-28 05:12:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:30,249 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 313 transitions. [2024-11-28 05:12:30,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.8604651162790695) internal successors, (252), 43 states have internal predecessors, (252), 38 states have call successors, (44), 2 states have call predecessors, (44), 19 states have return successors, (60), 23 states have call predecessors, (60), 38 states have call successors, (60) [2024-11-28 05:12:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 313 transitions. [2024-11-28 05:12:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8488 [2024-11-28 05:12:30,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:30,655 INFO L218 NwaCegarLoop]: trace histogram [868, 861, 703, 436, 436, 436, 436, 431, 431, 431, 431, 431, 430, 430, 430, 429, 267, 165, 1, 1, 1, 1, 1] [2024-11-28 05:12:30,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 05:12:30,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 05:12:30,856 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:12:30,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1578862277, now seen corresponding path program 18 times [2024-11-28 05:12:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:30,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049028770] [2024-11-28 05:12:30,863 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:12:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:33,718 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 382 check-sat command(s) [2024-11-28 05:12:33,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:13:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2671624 backedges. 29436 proven. 97885 refuted. 0 times theorem prover too weak. 2544303 trivial. 0 not checked. [2024-11-28 05:13:12,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049028770] [2024-11-28 05:13:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049028770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355634298] [2024-11-28 05:13:12,808 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:13:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:12,810 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:12,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 05:13:22,193 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 382 check-sat command(s) [2024-11-28 05:13:22,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:13:22,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 9147 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 05:13:22,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:13:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2671624 backedges. 1213770 proven. 55428 refuted. 0 times theorem prover too weak. 1402426 trivial. 0 not checked. [2024-11-28 05:13:22,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2671624 backedges. 29423 proven. 98069 refuted. 0 times theorem prover too weak. 2544132 trivial. 0 not checked. [2024-11-28 05:13:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355634298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:46,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:46,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27, 39] total 47 [2024-11-28 05:13:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256455126] [2024-11-28 05:13:46,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:46,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 05:13:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:46,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 05:13:46,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1822, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 05:13:46,499 INFO L87 Difference]: Start difference. First operand 245 states and 313 transitions. Second operand has 47 states, 47 states have (on average 5.382978723404255) internal successors, (253), 46 states have internal predecessors, (253), 37 states have call successors, (44), 8 states have call predecessors, (44), 16 states have return successors, (48), 19 states have call predecessors, (48), 31 states have call successors, (48) [2024-11-28 05:13:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:13:48,125 INFO L93 Difference]: Finished difference Result 602 states and 842 transitions. [2024-11-28 05:13:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-28 05:13:48,126 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.382978723404255) internal successors, (253), 46 states have internal predecessors, (253), 37 states have call successors, (44), 8 states have call predecessors, (44), 16 states have return successors, (48), 19 states have call predecessors, (48), 31 states have call successors, (48) Word has length 8487 [2024-11-28 05:13:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:13:48,133 INFO L225 Difference]: With dead ends: 602 [2024-11-28 05:13:48,133 INFO L226 Difference]: Without dead ends: 363 [2024-11-28 05:13:48,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17081 GetRequests, 16949 SyntacticMatches, 27 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2863, Invalid=8479, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 05:13:48,137 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 690 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:13:48,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 250 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:13:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-28 05:13:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 302. [2024-11-28 05:13:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 246 states have (on average 1.024390243902439) internal successors, (252), 243 states have internal predecessors, (252), 42 states have call successors, (42), 34 states have call predecessors, (42), 13 states have return successors, (103), 24 states have call predecessors, (103), 41 states have call successors, (103) [2024-11-28 05:13:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 397 transitions. [2024-11-28 05:13:48,171 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 397 transitions. Word has length 8487 [2024-11-28 05:13:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:13:48,175 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 397 transitions. [2024-11-28 05:13:48,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.382978723404255) internal successors, (253), 46 states have internal predecessors, (253), 37 states have call successors, (44), 8 states have call predecessors, (44), 16 states have return successors, (48), 19 states have call predecessors, (48), 31 states have call successors, (48) [2024-11-28 05:13:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 397 transitions. [2024-11-28 05:13:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3892 [2024-11-28 05:13:48,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:13:48,279 INFO L218 NwaCegarLoop]: trace histogram [397, 396, 321, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 198, 197, 123, 76, 1, 1, 1, 1, 1] [2024-11-28 05:13:48,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 05:13:48,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 05:13:48,480 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:13:48,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:13:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2141287652, now seen corresponding path program 19 times [2024-11-28 05:13:48,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:13:48,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945543038] [2024-11-28 05:13:48,481 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:13:48,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 560022 backedges. 23364 proven. 36223 refuted. 0 times theorem prover too weak. 500435 trivial. 0 not checked. [2024-11-28 05:14:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945543038] [2024-11-28 05:14:13,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945543038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:14:13,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801642110] [2024-11-28 05:14:13,166 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:14:13,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:13,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:13,168 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:13,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:14:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:16,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 7207 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 05:14:16,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 560022 backedges. 25655 proven. 38497 refuted. 0 times theorem prover too weak. 495870 trivial. 0 not checked. [2024-11-28 05:14:16,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 560022 backedges. 25655 proven. 38888 refuted. 0 times theorem prover too weak. 495479 trivial. 0 not checked. [2024-11-28 05:14:36,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801642110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:36,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:14:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 43] total 48 [2024-11-28 05:14:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791456466] [2024-11-28 05:14:36,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:36,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 05:14:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:36,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 05:14:36,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1893, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 05:14:36,322 INFO L87 Difference]: Start difference. First operand 302 states and 397 transitions. Second operand has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) [2024-11-28 05:14:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:37,602 INFO L93 Difference]: Finished difference Result 646 states and 886 transitions. [2024-11-28 05:14:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 05:14:37,603 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) Word has length 3891 [2024-11-28 05:14:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:37,609 INFO L225 Difference]: With dead ends: 646 [2024-11-28 05:14:37,609 INFO L226 Difference]: Without dead ends: 350 [2024-11-28 05:14:37,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7852 GetRequests, 7755 SyntacticMatches, 21 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1450, Invalid=4556, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 05:14:37,613 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 530 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:37,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 518 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:14:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-28 05:14:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 230. [2024-11-28 05:14:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 185 states have (on average 1.0162162162162163) internal successors, (188), 184 states have internal predecessors, (188), 31 states have call successors, (31), 22 states have call predecessors, (31), 13 states have return successors, (95), 23 states have call predecessors, (95), 30 states have call successors, (95) [2024-11-28 05:14:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 314 transitions. [2024-11-28 05:14:37,646 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 314 transitions. Word has length 3891 [2024-11-28 05:14:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:37,650 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 314 transitions. [2024-11-28 05:14:37,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) [2024-11-28 05:14:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 314 transitions. [2024-11-28 05:14:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4565 [2024-11-28 05:14:37,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:37,802 INFO L218 NwaCegarLoop]: trace histogram [466, 464, 377, 233, 233, 233, 233, 232, 232, 232, 232, 232, 232, 232, 232, 231, 144, 89, 1, 1, 1, 1, 1] [2024-11-28 05:14:37,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 05:14:38,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e94a4a1b-264e-4ce5-9819-e2ade3a3b9e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:38,003 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:14:38,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290130, now seen corresponding path program 20 times [2024-11-28 05:14:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979732256] [2024-11-28 05:14:38,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:14:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:39,581 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:14:39,582 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat