./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/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_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 42036c90cf17a9bca9878c7ba1e2de2c7beff8028a525d1b2b84e3f8cdd299d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:56:10,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:56:10,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:56:10,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:56:10,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:56:10,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:56:10,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:56:10,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:56:10,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:56:10,996 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:56:10,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:56:10,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:56:10,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:56:10,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:56:10,999 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:56:10,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:56:11,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:56:11,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:56:11,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:56:11,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:56:11,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:56:11,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:56:11,002 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:56:11,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:56:11,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:56:11,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:56:11,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:11,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:56:11,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:11,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:56:11,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:56:11,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:56:11,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:56:11,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:56:11,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:56:11,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:56:11,004 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_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42036c90cf17a9bca9878c7ba1e2de2c7beff8028a525d1b2b84e3f8cdd299d5 [2024-11-28 04:56:11,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:56:11,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:56:11,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:56:11,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:56:11,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:56:11,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive/Fibonacci05.c [2024-11-28 04:56:14,382 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/data/def14e7b9/064d02e25a8d41c98130a01910b6aef1/FLAGb4354937f [2024-11-28 04:56:14,758 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:56:14,763 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/sv-benchmarks/c/recursive/Fibonacci05.c [2024-11-28 04:56:14,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/data/def14e7b9/064d02e25a8d41c98130a01910b6aef1/FLAGb4354937f [2024-11-28 04:56:14,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/data/def14e7b9/064d02e25a8d41c98130a01910b6aef1 [2024-11-28 04:56:14,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:56:14,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:56:14,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:56:14,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:56:14,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:56:14,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:56:14" (1/1) ... [2024-11-28 04:56:14,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14056dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:14, skipping insertion in model container [2024-11-28 04:56:14,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:56:14" (1/1) ... [2024-11-28 04:56:14,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:56:15,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:15,142 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:56:15,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:15,185 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:56:15,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15 WrapperNode [2024-11-28 04:56:15,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:56:15,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:56:15,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:56:15,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:56:15,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,231 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-11-28 04:56:15,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:56:15,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:56:15,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:56:15,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:56:15,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,254 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:56:15,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,257 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:56:15,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:56:15,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:56:15,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:56:15,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (1/1) ... [2024-11-28 04:56:15,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:15,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:15,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:56:15,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:56:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-28 04:56:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-28 04:56:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:56:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:56:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:56:15,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:56:15,409 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:56:15,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:56:15,611 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-28 04:56:15,611 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:56:15,624 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:56:15,624 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:56:15,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:56:15 BoogieIcfgContainer [2024-11-28 04:56:15,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:56:15,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:56:15,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:56:15,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:56:15,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:56:14" (1/3) ... [2024-11-28 04:56:15,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ee849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:56:15, skipping insertion in model container [2024-11-28 04:56:15,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:15" (2/3) ... [2024-11-28 04:56:15,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3ee849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:56:15, skipping insertion in model container [2024-11-28 04:56:15,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:56:15" (3/3) ... [2024-11-28 04:56:15,637 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2024-11-28 04:56:15,654 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:56:15,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci05.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-11-28 04:56:15,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:56:15,728 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;@14af8c52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:56:15,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 04:56:15,734 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 04:56:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:56:15,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:15,741 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:15,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:15,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash 629029755, now seen corresponding path program 1 times [2024-11-28 04:56:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:15,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396713336] [2024-11-28 04:56:15,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:15,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396713336] [2024-11-28 04:56:15,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396713336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:56:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54544834] [2024-11-28 04:56:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:15,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:15,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:15,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:15,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:15,982 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 04:56:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:16,051 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-28 04:56:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:56:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:16,067 INFO L225 Difference]: With dead ends: 37 [2024-11-28 04:56:16,067 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 04:56:16,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:16,077 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:16,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 04:56:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-28 04:56:16,117 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 04:56:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-28 04:56:16,126 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2024-11-28 04:56:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:16,127 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-28 04:56:16,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-28 04:56:16,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:56:16,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:16,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:16,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:56:16,130 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:16,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1974914033, now seen corresponding path program 1 times [2024-11-28 04:56:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212596392] [2024-11-28 04:56:16,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212596392] [2024-11-28 04:56:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212596392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:56:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61756128] [2024-11-28 04:56:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:16,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:16,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:16,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:16,296 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:16,416 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-28 04:56:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:56:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:16,418 INFO L225 Difference]: With dead ends: 25 [2024-11-28 04:56:16,418 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 04:56:16,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:56:16,419 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:16,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 04:56:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-28 04:56:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-28 04:56:16,431 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2024-11-28 04:56:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:16,431 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-28 04:56:16,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-28 04:56:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:56:16,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:16,432 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 04:56:16,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:56:16,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:16,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1558234811, now seen corresponding path program 1 times [2024-11-28 04:56:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738829768] [2024-11-28 04:56:16,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:16,755 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 04:56:16,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:16,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738829768] [2024-11-28 04:56:16,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738829768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:16,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:56:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542167315] [2024-11-28 04:56:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:16,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:16,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:16,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:16,760 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:16,831 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-28 04:56:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:16,832 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 04:56:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:16,833 INFO L225 Difference]: With dead ends: 35 [2024-11-28 04:56:16,834 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 04:56:16,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:16,836 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:16,839 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 04:56:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 04:56:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-28 04:56:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:56:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-28 04:56:16,856 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2024-11-28 04:56:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:16,856 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-28 04:56:16,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-28 04:56:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:56:16,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:16,858 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 04:56:16,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:56:16,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:16,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 171916151, now seen corresponding path program 1 times [2024-11-28 04:56:16,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:16,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531231714] [2024-11-28 04:56:16,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:16,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:17,057 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 04:56:17,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531231714] [2024-11-28 04:56:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531231714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718017056] [2024-11-28 04:56:17,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:17,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:17,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:17,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:56:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:17,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:56:17,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:17,303 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 04:56:17,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:17,519 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 04:56:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718017056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:17,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-28 04:56:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853586222] [2024-11-28 04:56:17,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:17,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:56:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:17,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:56:17,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:56:17,522 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:56:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:17,913 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-11-28 04:56:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:56:17,913 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 04:56:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:17,915 INFO L225 Difference]: With dead ends: 91 [2024-11-28 04:56:17,915 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 04:56:17,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:56:17,917 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:17,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 92 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:56:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 04:56:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2024-11-28 04:56:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 04:56:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-28 04:56:17,937 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2024-11-28 04:56:17,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:17,937 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-28 04:56:17,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:56:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-28 04:56:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:56:17,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:17,942 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 04:56:17,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:56:18,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:18,143 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:18,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash 170784145, now seen corresponding path program 2 times [2024-11-28 04:56:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817689552] [2024-11-28 04:56:18,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:18,162 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:18,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:18,337 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 04:56:18,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:18,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817689552] [2024-11-28 04:56:18,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817689552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533339347] [2024-11-28 04:56:18,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:18,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:18,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:18,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:18,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:56:18,390 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:18,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:18,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:56:18,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:18,462 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 04:56:18,462 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:18,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533339347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:18,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:18,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:56:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084916123] [2024-11-28 04:56:18,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:18,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:18,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:18,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:18,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:56:18,464 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:18,506 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-28 04:56:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:18,507 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 04:56:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:18,510 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:56:18,510 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 04:56:18,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:56:18,512 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:18,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 04:56:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-28 04:56:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 04:56:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-28 04:56:18,537 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 31 [2024-11-28 04:56:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:18,537 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-28 04:56:18,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-28 04:56:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 04:56:18,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:18,538 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 04:56:18,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:56:18,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:18,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:18,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 999341253, now seen corresponding path program 1 times [2024-11-28 04:56:18,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:18,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121038004] [2024-11-28 04:56:18,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:18,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:18,849 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 04:56:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121038004] [2024-11-28 04:56:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121038004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394701303] [2024-11-28 04:56:18,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:18,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:18,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:18,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:56:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:18,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:56:18,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:18,984 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 04:56:18,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:18,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394701303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:18,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:18,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 04:56:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442952784] [2024-11-28 04:56:18,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:18,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:56:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:18,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:56:18,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:56:18,986 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:19,035 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-11-28 04:56:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:56:19,035 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 04:56:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:19,037 INFO L225 Difference]: With dead ends: 82 [2024-11-28 04:56:19,037 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 04:56:19,038 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 04:56:19,039 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 04:56:19,039 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 04:56:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 04:56:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-11-28 04:56:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2024-11-28 04:56:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2024-11-28 04:56:19,059 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 32 [2024-11-28 04:56:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:19,060 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2024-11-28 04:56:19,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:56:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2024-11-28 04:56:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:56:19,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:19,065 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 04:56:19,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:56:19,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:19,266 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:19,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:19,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1613174786, now seen corresponding path program 1 times [2024-11-28 04:56:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:19,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774996901] [2024-11-28 04:56:19,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:19,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:19,470 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 04:56:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774996901] [2024-11-28 04:56:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774996901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841761618] [2024-11-28 04:56:19,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:19,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:19,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:56:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:19,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:56:19,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:19,646 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 04:56:19,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:19,906 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 04:56:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841761618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:19,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-28 04:56:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113023655] [2024-11-28 04:56:19,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:19,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:56:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:19,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:56:19,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:56:19,908 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:56:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:20,152 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2024-11-28 04:56:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:56:20,153 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 04:56:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:20,156 INFO L225 Difference]: With dead ends: 141 [2024-11-28 04:56:20,156 INFO L226 Difference]: Without dead ends: 139 [2024-11-28 04:56:20,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:56:20,158 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:20,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 137 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-28 04:56:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2024-11-28 04:56:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2024-11-28 04:56:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2024-11-28 04:56:20,185 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 52 [2024-11-28 04:56:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:20,185 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2024-11-28 04:56:20,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:56:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2024-11-28 04:56:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:56:20,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:20,188 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 04:56:20,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:56:20,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:20,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:20,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1355362734, now seen corresponding path program 1 times [2024-11-28 04:56:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780164649] [2024-11-28 04:56:20,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:20,665 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 04:56:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780164649] [2024-11-28 04:56:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780164649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011310970] [2024-11-28 04:56:20,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:20,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:20,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:56:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:20,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:56:20,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:20,862 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 04:56:20,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:21,348 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 04:56:21,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011310970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:21,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:21,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-11-28 04:56:21,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790173663] [2024-11-28 04:56:21,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:21,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:56:21,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:21,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:56:21,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:56:21,352 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 04:56:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:21,587 INFO L93 Difference]: Finished difference Result 174 states and 299 transitions. [2024-11-28 04:56:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:56:21,588 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 04:56:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:21,589 INFO L225 Difference]: With dead ends: 174 [2024-11-28 04:56:21,589 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 04:56:21,592 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 04:56:21,593 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:21,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 75 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 04:56:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-11-28 04:56:21,605 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 04:56:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-11-28 04:56:21,606 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 82 [2024-11-28 04:56:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:21,607 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-11-28 04:56:21,607 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 04:56:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-11-28 04:56:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:56:21,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:21,609 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 04:56:21,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:56:21,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:21,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:21,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash -195722252, now seen corresponding path program 2 times [2024-11-28 04:56:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934890030] [2024-11-28 04:56:21,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:21,836 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:21,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:22,073 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 04:56:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934890030] [2024-11-28 04:56:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934890030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373317512] [2024-11-28 04:56:22,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:22,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:22,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:22,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:56:22,144 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:22,144 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:22,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:56:22,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:22,219 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 04:56:22,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:22,604 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 04:56:22,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373317512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:22,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:22,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-28 04:56:22,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422047196] [2024-11-28 04:56:22,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:22,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:56:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:22,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:56:22,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:56:22,607 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 04:56:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:22,725 INFO L93 Difference]: Finished difference Result 129 states and 179 transitions. [2024-11-28 04:56:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:56:22,726 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 04:56:22,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:22,727 INFO L225 Difference]: With dead ends: 129 [2024-11-28 04:56:22,727 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 04:56:22,727 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 04:56:22,728 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 04:56:22,728 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 04:56:22,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 04:56:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-28 04:56:22,736 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 04:56:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-28 04:56:22,737 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 128 [2024-11-28 04:56:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:22,738 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-28 04:56:22,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 7 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:56:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-28 04:56:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 04:56:22,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:22,740 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 04:56:22,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:56:22,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:56:22,940 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:22,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1731852194, now seen corresponding path program 3 times [2024-11-28 04:56:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755352805] [2024-11-28 04:56:22,941 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:56:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:22,972 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:56:22,973 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:23,099 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 04:56:23,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:23,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755352805] [2024-11-28 04:56:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755352805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:23,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856174504] [2024-11-28 04:56:23,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:56:23,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:23,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:23,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:23,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:56:23,162 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:56:23,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:23,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:56:23,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:23,226 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 04:56:23,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:23,600 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 04:56:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856174504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:23,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2024-11-28 04:56:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598648158] [2024-11-28 04:56:23,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:23,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:56:23,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:23,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:56:23,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:56:23,603 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 04:56:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:23,730 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2024-11-28 04:56:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:56:23,732 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 04:56:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:23,733 INFO L225 Difference]: With dead ends: 114 [2024-11-28 04:56:23,733 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 04:56:23,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:56:23,734 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 04:56:23,734 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 04:56:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 04:56:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-11-28 04:56:23,748 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 04:56:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-28 04:56:23,752 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 130 [2024-11-28 04:56:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:23,752 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-28 04:56:23,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 04:56:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-28 04:56:23,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:56:23,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:23,753 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 04:56:23,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:56:23,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:56:23,957 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:23,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1222003313, now seen corresponding path program 4 times [2024-11-28 04:56:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:23,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518094389] [2024-11-28 04:56:23,958 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:56:23,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:24,001 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:56:24,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:24,222 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 04:56:24,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518094389] [2024-11-28 04:56:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518094389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019252549] [2024-11-28 04:56:24,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:56:24,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:24,226 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:56:24,298 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:56:24,298 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:24,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:56:24,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:24,468 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 04:56:24,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:25,115 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 04:56:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019252549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:25,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:25,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 19 [2024-11-28 04:56:25,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069704198] [2024-11-28 04:56:25,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:25,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:56:25,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:25,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:56:25,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:56:25,118 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 04:56:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:25,417 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-28 04:56:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:56:25,417 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 04:56:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:25,418 INFO L225 Difference]: With dead ends: 126 [2024-11-28 04:56:25,419 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 04:56:25,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 278 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:56:25,420 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 121 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:25,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:56:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 04:56:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2024-11-28 04:56:25,428 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 04:56:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-28 04:56:25,429 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 144 [2024-11-28 04:56:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:25,429 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-28 04:56:25,429 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 04:56:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-28 04:56:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 04:56:25,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:25,431 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 04:56:25,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:56:25,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:25,631 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:25,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:25,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1765439256, now seen corresponding path program 5 times [2024-11-28 04:56:25,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:25,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901013673] [2024-11-28 04:56:25,632 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:56:25,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:25,650 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 04:56:25,650 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:25,885 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 04:56:25,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:25,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901013673] [2024-11-28 04:56:25,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901013673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:25,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138112878] [2024-11-28 04:56:25,886 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:56:25,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:25,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:25,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:25,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:56:25,959 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 04:56:25,959 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:25,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:56:25,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:26,114 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 04:56:26,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:26,688 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 04:56:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138112878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:26,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:26,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 24 [2024-11-28 04:56:26,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921316686] [2024-11-28 04:56:26,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:26,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:56:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:26,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:56:26,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:56:26,691 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 04:56:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:26,782 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2024-11-28 04:56:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:56:26,782 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 04:56:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:26,783 INFO L225 Difference]: With dead ends: 63 [2024-11-28 04:56:26,784 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 04:56:26,784 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 04:56:26,785 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 04:56:26,785 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 04:56:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 04:56:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-28 04:56:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-28 04:56:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-28 04:56:26,797 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 90 [2024-11-28 04:56:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:26,798 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-28 04:56:26,798 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 04:56:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-28 04:56:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:56:26,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:26,801 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:56:26,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:27,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:56:27,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:27,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1805488148, now seen corresponding path program 2 times [2024-11-28 04:56:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338990877] [2024-11-28 04:56:27,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:27,024 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:27,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 55 proven. 137 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-28 04:56:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338990877] [2024-11-28 04:56:27,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338990877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558639302] [2024-11-28 04:56:27,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:27,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:27,518 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:27,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:56:27,612 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:27,613 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:27,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:56:27,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:27,839 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 04:56:27,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:28,706 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 04:56:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558639302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:28,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 30 [2024-11-28 04:56:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954481683] [2024-11-28 04:56:28,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:28,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:56:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:28,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:56:28,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:56:28,709 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 04:56:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:29,386 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2024-11-28 04:56:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:56:29,387 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 04:56:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:29,388 INFO L225 Difference]: With dead ends: 136 [2024-11-28 04:56:29,388 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 04:56:29,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:56:29,393 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:29,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 124 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:56:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 04:56:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-28 04:56:29,406 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 04:56:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-11-28 04:56:29,407 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 124 [2024-11-28 04:56:29,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:29,407 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-11-28 04:56:29,408 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 04:56:29,408 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-11-28 04:56:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 04:56:29,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:29,412 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 04:56:29,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:56:29,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:56:29,615 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:29,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1852602920, now seen corresponding path program 3 times [2024-11-28 04:56:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227417837] [2024-11-28 04:56:29,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:56:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:29,654 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:56:29,654 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:30,257 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 04:56:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:30,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227417837] [2024-11-28 04:56:30,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227417837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:30,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703455012] [2024-11-28 04:56:30,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:56:30,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:30,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:30,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:30,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:56:30,364 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:56:30,364 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:30,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:56:30,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:30,609 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 04:56:30,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:32,159 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 04:56:32,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703455012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:32,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:32,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2024-11-28 04:56:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708352622] [2024-11-28 04:56:32,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:32,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:56:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:32,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:56:32,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:56:32,162 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 04:56:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:32,416 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-11-28 04:56:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:56:32,416 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 04:56:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:32,418 INFO L225 Difference]: With dead ends: 117 [2024-11-28 04:56:32,419 INFO L226 Difference]: Without dead ends: 116 [2024-11-28 04:56:32,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 470 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:56:32,420 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:32,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 185 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-28 04:56:32,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-11-28 04:56:32,431 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 04:56:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2024-11-28 04:56:32,433 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 243 [2024-11-28 04:56:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:32,434 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2024-11-28 04:56:32,434 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 04:56:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2024-11-28 04:56:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-28 04:56:32,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:32,441 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 04:56:32,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:56:32,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:56:32,645 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:32,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1326333035, now seen corresponding path program 4 times [2024-11-28 04:56:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812885311] [2024-11-28 04:56:32,645 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:56:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:32,677 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:56:32,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:33,042 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 04:56:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812885311] [2024-11-28 04:56:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812885311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741343081] [2024-11-28 04:56:33,042 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:56:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:33,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:33,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:33,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:56:33,184 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:56:33,184 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:33,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:56:33,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:33,378 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 04:56:33,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:34,974 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 04:56:34,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741343081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:34,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:34,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 24 [2024-11-28 04:56:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376538058] [2024-11-28 04:56:34,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:34,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:56:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:34,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:56:34,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:56:34,978 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 04:56:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:35,398 INFO L93 Difference]: Finished difference Result 214 states and 308 transitions. [2024-11-28 04:56:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:56:35,400 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 04:56:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:35,404 INFO L225 Difference]: With dead ends: 214 [2024-11-28 04:56:35,404 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 04:56:35,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 744 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1144, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:56:35,410 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 182 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:35,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 124 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:56:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 04:56:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2024-11-28 04:56:35,430 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 04:56:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-11-28 04:56:35,434 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 379 [2024-11-28 04:56:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:35,434 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-11-28 04:56:35,435 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 04:56:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-11-28 04:56:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 04:56:35,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:35,442 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1, 1] [2024-11-28 04:56:35,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:56:35,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:56:35,646 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:35,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:35,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2085379565, now seen corresponding path program 5 times [2024-11-28 04:56:35,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:35,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760938132] [2024-11-28 04:56:35,646 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:56:35,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:35,683 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 04:56:35,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:36,172 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 04:56:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760938132] [2024-11-28 04:56:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760938132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413408692] [2024-11-28 04:56:36,173 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:56:36,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:36,175 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:56:36,341 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 04:56:36,341 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:36,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:56:36,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:36,574 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 04:56:36,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:38,616 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 04:56:38,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413408692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:38,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:38,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 27 [2024-11-28 04:56:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312415614] [2024-11-28 04:56:38,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:38,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:56:38,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:38,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:56:38,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:56:38,620 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 04:56:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:39,385 INFO L93 Difference]: Finished difference Result 264 states and 349 transitions. [2024-11-28 04:56:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:56:39,386 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 04:56:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:39,389 INFO L225 Difference]: With dead ends: 264 [2024-11-28 04:56:39,389 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 04:56:39,391 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 04:56:39,391 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 212 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:39,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 161 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:56:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 04:56:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2024-11-28 04:56:39,406 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 04:56:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2024-11-28 04:56:39,408 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 301 [2024-11-28 04:56:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:39,408 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2024-11-28 04:56:39,409 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 04:56:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2024-11-28 04:56:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 04:56:39,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:39,414 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1, 1] [2024-11-28 04:56:39,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:39,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:56:39,617 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:39,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1264030145, now seen corresponding path program 6 times [2024-11-28 04:56:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132736714] [2024-11-28 04:56:39,618 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:56:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:39,683 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 04:56:39,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:40,231 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 04:56:40,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132736714] [2024-11-28 04:56:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132736714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136860854] [2024-11-28 04:56:40,232 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:56:40,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:40,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:40,236 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:40,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:56:40,449 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 04:56:40,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:40,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:56:40,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:40,678 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 04:56:40,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:42,126 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 04:56:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136860854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:42,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:42,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2024-11-28 04:56:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931511998] [2024-11-28 04:56:42,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:42,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:56:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:42,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:56:42,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:56:42,131 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 04:56:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:42,606 INFO L93 Difference]: Finished difference Result 262 states and 351 transitions. [2024-11-28 04:56:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:56:42,607 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 04:56:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:42,611 INFO L225 Difference]: With dead ends: 262 [2024-11-28 04:56:42,611 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 04:56:42,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 590 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:56:42,614 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 99 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:42,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 236 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:56:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 04:56:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-11-28 04:56:42,629 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 04:56:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2024-11-28 04:56:42,630 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 301 [2024-11-28 04:56:42,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:42,632 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2024-11-28 04:56:42,632 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 04:56:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2024-11-28 04:56:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-28 04:56:42,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:42,637 INFO L218 NwaCegarLoop]: trace histogram [42, 40, 34, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1, 1] [2024-11-28 04:56:42,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:56:42,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:56:42,838 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:42,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1368637202, now seen corresponding path program 7 times [2024-11-28 04:56:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681847944] [2024-11-28 04:56:42,838 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:56:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:45,962 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 04:56:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681847944] [2024-11-28 04:56:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681847944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192560177] [2024-11-28 04:56:45,963 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:56:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:45,966 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:45,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:56:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:46,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 04:56:46,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2024-11-28 04:56:46,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2024-11-28 04:56:55,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192560177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:55,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:55,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2024-11-28 04:56:55,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326736692] [2024-11-28 04:56:55,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:55,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 04:56:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:55,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 04:56:55,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:56:55,228 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 04:56:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:55,548 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2024-11-28 04:56:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:56:55,549 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 04:56:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:55,551 INFO L225 Difference]: With dead ends: 168 [2024-11-28 04:56:55,551 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 04:56:55,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 794 SyntacticMatches, 51 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=591, Invalid=2061, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:56:55,555 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:55,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 224 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:56:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 04:56:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 149. [2024-11-28 04:56:55,571 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 04:56:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2024-11-28 04:56:55,573 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 405 [2024-11-28 04:56:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:55,573 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2024-11-28 04:56:55,574 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 04:56:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2024-11-28 04:56:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2024-11-28 04:56:55,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:55,583 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 04:56:55,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:55,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:56:55,783 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:56:55,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1447574050, now seen corresponding path program 8 times [2024-11-28 04:56:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6799327] [2024-11-28 04:56:55,785 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:55,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:55,883 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:55,883 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:57,518 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 04:56:57,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:57,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6799327] [2024-11-28 04:56:57,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6799327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:57,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724606740] [2024-11-28 04:56:57,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:57,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:57,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:57,521 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:57,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:56:58,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:58,122 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:58,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:56:58,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:58,502 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 04:56:58,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:02,859 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 04:57:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724606740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:02,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-28 04:57:02,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451252209] [2024-11-28 04:57:02,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:02,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:57:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:02,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:57:02,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:57:02,867 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 04:57:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:03,695 INFO L93 Difference]: Finished difference Result 331 states and 496 transitions. [2024-11-28 04:57:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:57:03,696 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 04:57:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:03,702 INFO L225 Difference]: With dead ends: 331 [2024-11-28 04:57:03,703 INFO L226 Difference]: Without dead ends: 188 [2024-11-28 04:57:03,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1800 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 04:57:03,707 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:03,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 198 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:57:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-28 04:57:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 158. [2024-11-28 04:57:03,731 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 04:57:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2024-11-28 04:57:03,733 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 909 [2024-11-28 04:57:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:03,734 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2024-11-28 04:57:03,734 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 04:57:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2024-11-28 04:57:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2024-11-28 04:57:03,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:03,750 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 04:57:03,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:03,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:03,951 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:57:03,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash 700024010, now seen corresponding path program 9 times [2024-11-28 04:57:03,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:03,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043204200] [2024-11-28 04:57:03,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:57:03,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:04,183 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-11-28 04:57:04,183 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:17,094 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 04:57:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043204200] [2024-11-28 04:57:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043204200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968795030] [2024-11-28 04:57:17,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:57:17,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:17,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:17,098 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:17,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:57:17,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-11-28 04:57:17,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:17,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-28 04:57:17,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:18,657 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 04:57:18,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:53,274 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 04:57:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968795030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:53,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:53,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 38] total 53 [2024-11-28 04:57:53,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858190167] [2024-11-28 04:57:53,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:53,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 04:57:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:53,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 04:57:53,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:57:53,279 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 04:57:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:53,651 INFO L93 Difference]: Finished difference Result 216 states and 319 transitions. [2024-11-28 04:57:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:57:53,652 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 04:57:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:53,655 INFO L225 Difference]: With dead ends: 216 [2024-11-28 04:57:53,656 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 04:57:53,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2654 GetRequests, 2476 SyntacticMatches, 119 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6501 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=784, Invalid=2876, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 04:57:53,657 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:53,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 200 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:57:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 04:57:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 176. [2024-11-28 04:57:53,676 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 04:57:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 252 transitions. [2024-11-28 04:57:53,679 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 252 transitions. Word has length 1242 [2024-11-28 04:57:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:53,681 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 252 transitions. [2024-11-28 04:57:53,681 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 04:57:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 252 transitions. [2024-11-28 04:57:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1904 [2024-11-28 04:57:53,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:53,709 INFO L218 NwaCegarLoop]: trace histogram [196, 191, 159, 99, 99, 99, 99, 96, 96, 96, 96, 96, 95, 95, 95, 94, 60, 37, 1, 1, 1, 1, 1] [2024-11-28 04:57:53,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:57:53,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:53,910 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:57:53,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -539017788, now seen corresponding path program 10 times [2024-11-28 04:57:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643084507] [2024-11-28 04:57:53,911 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:57:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:54,145 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:57:54,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 133259 backedges. 2335 proven. 14731 refuted. 0 times theorem prover too weak. 116193 trivial. 0 not checked. [2024-11-28 04:57:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643084507] [2024-11-28 04:57:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643084507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329180366] [2024-11-28 04:57:56,266 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:57:56,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:56,268 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:56,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:57:57,077 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:57:57,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:57,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:57:57,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 133259 backedges. 68365 proven. 5516 refuted. 0 times theorem prover too weak. 59378 trivial. 0 not checked. [2024-11-28 04:57:57,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 133259 backedges. 2811 proven. 17422 refuted. 0 times theorem prover too weak. 113026 trivial. 0 not checked. [2024-11-28 04:58:02,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329180366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:02,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:02,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 28] total 33 [2024-11-28 04:58:02,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46944963] [2024-11-28 04:58:02,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:02,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:58:02,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:02,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:58:02,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:58:02,565 INFO L87 Difference]: Start difference. First operand 176 states and 252 transitions. Second operand has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 28 states have call successors, (35), 5 states have call predecessors, (35), 13 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-28 04:58:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:03,377 INFO L93 Difference]: Finished difference Result 425 states and 701 transitions. [2024-11-28 04:58:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:58:03,378 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 28 states have call successors, (35), 5 states have call predecessors, (35), 13 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) Word has length 1903 [2024-11-28 04:58:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:03,384 INFO L225 Difference]: With dead ends: 425 [2024-11-28 04:58:03,385 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 04:58:03,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3867 GetRequests, 3787 SyntacticMatches, 18 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1036, Invalid=2996, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:58:03,390 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 378 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:03,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 177 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:58:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 04:58:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2024-11-28 04:58:03,429 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 04:58:03,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 330 transitions. [2024-11-28 04:58:03,434 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 330 transitions. Word has length 1903 [2024-11-28 04:58:03,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:03,436 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 330 transitions. [2024-11-28 04:58:03,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.96969696969697) internal successors, (197), 33 states have internal predecessors, (197), 28 states have call successors, (35), 5 states have call predecessors, (35), 13 states have return successors, (40), 15 states have call predecessors, (40), 25 states have call successors, (40) [2024-11-28 04:58:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 330 transitions. [2024-11-28 04:58:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3089 [2024-11-28 04:58:03,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:03,494 INFO L218 NwaCegarLoop]: trace histogram [316, 313, 256, 158, 158, 158, 158, 157, 157, 157, 157, 157, 156, 156, 156, 155, 98, 60, 1, 1, 1, 1, 1] [2024-11-28 04:58:03,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:58:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:03,694 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:58:03,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -264672275, now seen corresponding path program 11 times [2024-11-28 04:58:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304629295] [2024-11-28 04:58:03,696 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:58:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:04,150 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-28 04:58:04,154 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 352299 backedges. 15007 proven. 19906 refuted. 0 times theorem prover too weak. 317386 trivial. 0 not checked. [2024-11-28 04:58:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304629295] [2024-11-28 04:58:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304629295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797202694] [2024-11-28 04:58:06,511 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:58:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:06,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:06,514 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:06,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:58:08,047 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-28 04:58:08,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:08,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:58:08,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 352299 backedges. 188553 proven. 2667 refuted. 0 times theorem prover too weak. 161079 trivial. 0 not checked. [2024-11-28 04:58:08,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 352299 backedges. 15002 proven. 20004 refuted. 0 times theorem prover too weak. 317293 trivial. 0 not checked. [2024-11-28 04:58:20,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797202694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:20,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 31 [2024-11-28 04:58:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101194800] [2024-11-28 04:58:20,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:20,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:58:20,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:20,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:58:20,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:58:20,171 INFO L87 Difference]: Start difference. First operand 230 states and 330 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 27 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 27 states have call successors, (40) [2024-11-28 04:58:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:20,799 INFO L93 Difference]: Finished difference Result 439 states and 667 transitions. [2024-11-28 04:58:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:58:20,800 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 27 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 27 states have call successors, (40) Word has length 3088 [2024-11-28 04:58:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:20,804 INFO L225 Difference]: With dead ends: 439 [2024-11-28 04:58:20,804 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 04:58:20,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6219 GetRequests, 6161 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=560, Invalid=1602, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:58:20,810 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 186 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:20,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 272 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:58:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 04:58:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 167. [2024-11-28 04:58:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 132 states have internal predecessors, (137), 21 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (67), 20 states have call predecessors, (67), 20 states have call successors, (67) [2024-11-28 04:58:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2024-11-28 04:58:20,834 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 3088 [2024-11-28 04:58:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:20,835 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2024-11-28 04:58:20,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 27 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 27 states have call successors, (40) [2024-11-28 04:58:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2024-11-28 04:58:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1328 [2024-11-28 04:58:20,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:20,852 INFO L218 NwaCegarLoop]: trace histogram [136, 134, 110, 68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 67, 67, 66, 42, 26, 1, 1, 1, 1, 1] [2024-11-28 04:58:20,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:21,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:21,057 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:58:21,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash 932743323, now seen corresponding path program 12 times [2024-11-28 04:58:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:21,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867179900] [2024-11-28 04:58:21,058 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:58:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:21,465 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2024-11-28 04:58:21,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 6254 proven. 6164 refuted. 0 times theorem prover too weak. 52070 trivial. 0 not checked. [2024-11-28 04:58:24,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867179900] [2024-11-28 04:58:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867179900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308633090] [2024-11-28 04:58:24,463 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:58:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:24,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:24,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:58:25,662 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2024-11-28 04:58:25,663 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:25,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:58:25,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 6107 proven. 6188 refuted. 0 times theorem prover too weak. 52193 trivial. 0 not checked. [2024-11-28 04:58:25,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 64488 backedges. 6123 proven. 6305 refuted. 0 times theorem prover too weak. 52060 trivial. 0 not checked. [2024-11-28 04:58:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308633090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:30,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:30,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 31 [2024-11-28 04:58:30,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772276584] [2024-11-28 04:58:30,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:30,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 04:58:30,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:30,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 04:58:30,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:58:30,603 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 31 states have internal predecessors, (174), 21 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 20 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-28 04:58:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:31,484 INFO L93 Difference]: Finished difference Result 486 states and 672 transitions. [2024-11-28 04:58:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:58:31,485 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 31 states have internal predecessors, (174), 21 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 20 states have call predecessors, (38), 21 states have call successors, (38) Word has length 1327 [2024-11-28 04:58:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:31,489 INFO L225 Difference]: With dead ends: 486 [2024-11-28 04:58:31,489 INFO L226 Difference]: Without dead ends: 294 [2024-11-28 04:58:31,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2721 GetRequests, 2642 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1123, Invalid=3433, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:58:31,493 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 333 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:31,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 196 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:58:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-28 04:58:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 200. [2024-11-28 04:58:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 162 states have (on average 1.0246913580246915) internal successors, (166), 159 states have internal predecessors, (166), 26 states have call successors, (26), 20 states have call predecessors, (26), 11 states have return successors, (74), 20 states have call predecessors, (74), 25 states have call successors, (74) [2024-11-28 04:58:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 266 transitions. [2024-11-28 04:58:31,518 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 266 transitions. Word has length 1327 [2024-11-28 04:58:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:31,519 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 266 transitions. [2024-11-28 04:58:31,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 31 states have internal predecessors, (174), 21 states have call successors, (29), 1 states have call predecessors, (29), 13 states have return successors, (38), 20 states have call predecessors, (38), 21 states have call successors, (38) [2024-11-28 04:58:31,520 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 266 transitions. [2024-11-28 04:58:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2402 [2024-11-28 04:58:31,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:31,564 INFO L218 NwaCegarLoop]: trace histogram [246, 243, 199, 123, 123, 123, 123, 122, 122, 122, 122, 122, 121, 121, 121, 120, 76, 47, 1, 1, 1, 1, 1] [2024-11-28 04:58:31,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:58:31,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:31,765 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:58:31,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:31,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1422748086, now seen corresponding path program 13 times [2024-11-28 04:58:31,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:31,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026490097] [2024-11-28 04:58:31,766 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:58:31,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 212590 backedges. 5341 proven. 22560 refuted. 0 times theorem prover too weak. 184689 trivial. 0 not checked. [2024-11-28 04:58:37,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026490097] [2024-11-28 04:58:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026490097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221847979] [2024-11-28 04:58:37,820 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:58:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:37,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:37,822 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:37,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:58:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:38,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 4454 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:58:39,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 212590 backedges. 104377 proven. 5527 refuted. 0 times theorem prover too weak. 102686 trivial. 0 not checked. [2024-11-28 04:58:39,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 212590 backedges. 5779 proven. 25053 refuted. 0 times theorem prover too weak. 181758 trivial. 0 not checked. [2024-11-28 04:58:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221847979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:47,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-11-28 04:58:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535576656] [2024-11-28 04:58:47,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:47,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:58:47,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:47,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:58:47,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:58:47,847 INFO L87 Difference]: Start difference. First operand 200 states and 266 transitions. Second operand has 36 states, 36 states have (on average 5.833333333333333) internal successors, (210), 36 states have internal predecessors, (210), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-28 04:58:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:48,646 INFO L93 Difference]: Finished difference Result 418 states and 569 transitions. [2024-11-28 04:58:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:58:48,648 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.833333333333333) internal successors, (210), 36 states have internal predecessors, (210), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) Word has length 2401 [2024-11-28 04:58:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:48,652 INFO L225 Difference]: With dead ends: 418 [2024-11-28 04:58:48,653 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 04:58:48,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4851 GetRequests, 4781 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 04:58:48,657 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 173 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:48,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 303 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:58:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 04:58:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2024-11-28 04:58:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 165 states have (on average 1.0242424242424242) internal successors, (169), 162 states have internal predecessors, (169), 27 states have call successors, (27), 22 states have call predecessors, (27), 10 states have return successors, (61), 18 states have call predecessors, (61), 26 states have call successors, (61) [2024-11-28 04:58:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 257 transitions. [2024-11-28 04:58:48,689 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 257 transitions. Word has length 2401 [2024-11-28 04:58:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:48,690 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 257 transitions. [2024-11-28 04:58:48,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.833333333333333) internal successors, (210), 36 states have internal predecessors, (210), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-28 04:58:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 257 transitions. [2024-11-28 04:58:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2589 [2024-11-28 04:58:48,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:48,794 INFO L218 NwaCegarLoop]: trace histogram [267, 259, 217, 136, 136, 136, 136, 130, 130, 130, 130, 130, 129, 129, 129, 128, 81, 50, 1, 1, 1, 1, 1] [2024-11-28 04:58:48,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:58:48,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:48,995 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:58:48,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -526250312, now seen corresponding path program 14 times [2024-11-28 04:58:48,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:48,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667401823] [2024-11-28 04:58:48,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:58:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:49,305 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:58:49,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 247128 backedges. 6718 proven. 22170 refuted. 0 times theorem prover too weak. 218240 trivial. 0 not checked. [2024-11-28 04:59:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667401823] [2024-11-28 04:59:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667401823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266490414] [2024-11-28 04:59:01,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:59:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:01,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:01,015 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:01,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:59:02,426 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:59:02,426 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:02,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 4794 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:59:02,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 247128 backedges. 72888 proven. 19541 refuted. 0 times theorem prover too weak. 154699 trivial. 0 not checked. [2024-11-28 04:59:02,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 247128 backedges. 8308 proven. 24986 refuted. 0 times theorem prover too weak. 213834 trivial. 0 not checked. [2024-11-28 04:59:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266490414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:59:11,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:59:11,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 33] total 38 [2024-11-28 04:59:11,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221318402] [2024-11-28 04:59:11,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:59:11,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 04:59:11,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:11,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 04:59:11,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:59:11,424 INFO L87 Difference]: Start difference. First operand 203 states and 257 transitions. Second operand has 38 states, 38 states have (on average 5.894736842105263) internal successors, (224), 38 states have internal predecessors, (224), 33 states have call successors, (40), 8 states have call predecessors, (40), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 04:59:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:12,621 INFO L93 Difference]: Finished difference Result 461 states and 640 transitions. [2024-11-28 04:59:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:59:12,622 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.894736842105263) internal successors, (224), 38 states have internal predecessors, (224), 33 states have call successors, (40), 8 states have call predecessors, (40), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) Word has length 2588 [2024-11-28 04:59:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:12,627 INFO L225 Difference]: With dead ends: 461 [2024-11-28 04:59:12,627 INFO L226 Difference]: Without dead ends: 264 [2024-11-28 04:59:12,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5250 GetRequests, 5153 SyntacticMatches, 25 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1466, Invalid=3936, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 04:59:12,631 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 698 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:12,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 192 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:59:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-28 04:59:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 218. [2024-11-28 04:59:12,658 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 04:59:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 288 transitions. [2024-11-28 04:59:12,661 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 288 transitions. Word has length 2588 [2024-11-28 04:59:12,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:12,663 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 288 transitions. [2024-11-28 04:59:12,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.894736842105263) internal successors, (224), 38 states have internal predecessors, (224), 33 states have call successors, (40), 8 states have call predecessors, (40), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 04:59:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 288 transitions. [2024-11-28 04:59:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2024-11-28 04:59:12,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:12,683 INFO L218 NwaCegarLoop]: trace histogram [151, 150, 122, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 74, 47, 29, 1, 1, 1, 1, 1] [2024-11-28 04:59:12,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:59:12,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:12,883 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:59:12,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1231091485, now seen corresponding path program 15 times [2024-11-28 04:59:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919660526] [2024-11-28 04:59:12,885 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:59:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:13,023 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2024-11-28 04:59:13,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 5357 proven. 8991 refuted. 0 times theorem prover too weak. 65783 trivial. 0 not checked. [2024-11-28 04:59:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919660526] [2024-11-28 04:59:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919660526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618765306] [2024-11-28 04:59:14,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:59:14,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:14,788 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:14,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:59:15,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2024-11-28 04:59:15,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:15,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:59:15,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 5490 proven. 8960 refuted. 0 times theorem prover too weak. 65681 trivial. 0 not checked. [2024-11-28 04:59:16,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 5483 proven. 9112 refuted. 0 times theorem prover too weak. 65536 trivial. 0 not checked. [2024-11-28 04:59:23,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618765306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:59:23,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:59:23,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 28] total 47 [2024-11-28 04:59:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254354025] [2024-11-28 04:59:23,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:59:23,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 04:59:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:23,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 04:59:23,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1799, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:59:23,612 INFO L87 Difference]: Start difference. First operand 218 states and 288 transitions. Second operand has 47 states, 47 states have (on average 5.574468085106383) internal successors, (262), 47 states have internal predecessors, (262), 32 states have call successors, (41), 1 states have call predecessors, (41), 25 states have return successors, (59), 31 states have call predecessors, (59), 32 states have call successors, (59) [2024-11-28 04:59:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:24,936 INFO L93 Difference]: Finished difference Result 493 states and 667 transitions. [2024-11-28 04:59:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:59:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.574468085106383) internal successors, (262), 47 states have internal predecessors, (262), 32 states have call successors, (41), 1 states have call predecessors, (41), 25 states have return successors, (59), 31 states have call predecessors, (59), 32 states have call successors, (59) Word has length 1478 [2024-11-28 04:59:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:24,942 INFO L225 Difference]: With dead ends: 493 [2024-11-28 04:59:24,942 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 04:59:24,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3017 GetRequests, 2925 SyntacticMatches, 13 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2007 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1566, Invalid=4914, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 04:59:24,946 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 548 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:24,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 342 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:59:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 04:59:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 188. [2024-11-28 04:59:24,973 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 04:59:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-11-28 04:59:24,975 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 1478 [2024-11-28 04:59:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:24,977 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-11-28 04:59:24,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.574468085106383) internal successors, (262), 47 states have internal predecessors, (262), 32 states have call successors, (41), 1 states have call predecessors, (41), 25 states have return successors, (59), 31 states have call predecessors, (59), 32 states have call successors, (59) [2024-11-28 04:59:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-11-28 04:59:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2024-11-28 04:59:25,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:25,002 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 04:59:25,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:59:25,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:25,203 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 04:59:25,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash 180692526, now seen corresponding path program 16 times [2024-11-28 04:59:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:25,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477874617] [2024-11-28 04:59:25,204 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:59:25,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:25,478 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:59:25,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:45,014 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 05:00:45,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:45,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477874617] [2024-11-28 05:00:45,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477874617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:45,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272798971] [2024-11-28 05:00:45,015 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:00:45,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:45,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:45,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:45,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:00:46,149 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:00:46,149 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:46,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 3231 conjuncts, 353 conjuncts are in the unsatisfiable core [2024-11-28 05:00:46,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:47,947 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 05:00:47,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:03:24,155 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 05:03:24,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272798971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:03:24,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:03:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 47] total 61 [2024-11-28 05:03:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820590126] [2024-11-28 05:03:24,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:03:24,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 05:03:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:24,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 05:03:24,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=2974, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 05:03:24,161 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 62 states have internal predecessors, (157), 17 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (43), 43 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-28 05:03:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:24,422 INFO L93 Difference]: Finished difference Result 219 states and 307 transitions. [2024-11-28 05:03:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:03:24,423 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 62 states have internal predecessors, (157), 17 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (43), 43 states have call predecessors, (43), 17 states have call successors, (43) Word has length 1739 [2024-11-28 05:03:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:24,425 INFO L225 Difference]: With dead ends: 219 [2024-11-28 05:03:24,426 INFO L226 Difference]: Without dead ends: 218 [2024-11-28 05:03:24,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3832 GetRequests, 3444 SyntacticMatches, 325 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9494 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=865, Invalid=3295, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 05:03:24,427 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:24,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 189 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-28 05:03:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 209. [2024-11-28 05:03:24,451 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 05:03:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2024-11-28 05:03:24,453 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 1739 [2024-11-28 05:03:24,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:24,455 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2024-11-28 05:03:24,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5737704918032787) internal successors, (157), 62 states have internal predecessors, (157), 17 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (43), 43 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-28 05:03:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2024-11-28 05:03:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3480 [2024-11-28 05:03:24,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:24,536 INFO L218 NwaCegarLoop]: trace histogram [355, 354, 287, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 176, 110, 68, 1, 1, 1, 1, 1] [2024-11-28 05:03:24,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:03:24,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:03:24,737 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:03:24,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1922078603, now seen corresponding path program 17 times [2024-11-28 05:03:24,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:24,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72122995] [2024-11-28 05:03:24,739 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:03:24,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:26,582 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 257 check-sat command(s) [2024-11-28 05:03:26,582 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:03:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 24249 proven. 28479 refuted. 0 times theorem prover too weak. 394705 trivial. 0 not checked. [2024-11-28 05:03:45,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:45,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72122995] [2024-11-28 05:03:45,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72122995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:03:45,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217117955] [2024-11-28 05:03:45,705 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:03:45,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:03:45,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:03:45,707 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:03:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:03:50,995 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 257 check-sat command(s) [2024-11-28 05:03:50,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:03:51,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 6260 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:03:51,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:03:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 24974 proven. 29244 refuted. 0 times theorem prover too weak. 393215 trivial. 0 not checked. [2024-11-28 05:03:51,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 25002 proven. 29561 refuted. 0 times theorem prover too weak. 392870 trivial. 0 not checked. [2024-11-28 05:04:06,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217117955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:06,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 41] total 47 [2024-11-28 05:04:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881802874] [2024-11-28 05:04:06,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:06,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 05:04:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:06,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 05:04:06,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 05:04:06,800 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 47 states, 47 states have (on average 5.531914893617022) internal successors, (260), 47 states have internal predecessors, (260), 38 states have call successors, (43), 1 states have call predecessors, (43), 21 states have return successors, (59), 23 states have call predecessors, (59), 38 states have call successors, (59) [2024-11-28 05:04:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:08,657 INFO L93 Difference]: Finished difference Result 564 states and 834 transitions. [2024-11-28 05:04:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 05:04:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.531914893617022) internal successors, (260), 47 states have internal predecessors, (260), 38 states have call successors, (43), 1 states have call predecessors, (43), 21 states have return successors, (59), 23 states have call predecessors, (59), 38 states have call successors, (59) Word has length 3479 [2024-11-28 05:04:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:08,665 INFO L225 Difference]: With dead ends: 564 [2024-11-28 05:04:08,665 INFO L226 Difference]: Without dead ends: 345 [2024-11-28 05:04:08,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7060 GetRequests, 6935 SyntacticMatches, 20 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2593, Invalid=8749, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 05:04:08,669 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 692 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:08,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 343 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:04:08,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-28 05:04:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 266. [2024-11-28 05:04:08,703 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 05:04:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 368 transitions. [2024-11-28 05:04:08,705 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 368 transitions. Word has length 3479 [2024-11-28 05:04:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:08,707 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 368 transitions. [2024-11-28 05:04:08,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.531914893617022) internal successors, (260), 47 states have internal predecessors, (260), 38 states have call successors, (43), 1 states have call predecessors, (43), 21 states have return successors, (59), 23 states have call predecessors, (59), 38 states have call successors, (59) [2024-11-28 05:04:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 368 transitions. [2024-11-28 05:04:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3486 [2024-11-28 05:04:08,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:08,789 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 05:04:08,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:08,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 05:04:08,989 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:08,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash 337664429, now seen corresponding path program 18 times [2024-11-28 05:04:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371479519] [2024-11-28 05:04:08,990 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:04:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:09,671 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 153 check-sat command(s) [2024-11-28 05:04:09,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 18377 proven. 23274 refuted. 0 times theorem prover too weak. 407310 trivial. 0 not checked. [2024-11-28 05:04:16,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:16,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371479519] [2024-11-28 05:04:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371479519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720122739] [2024-11-28 05:04:16,875 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:04:16,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:16,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:16,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:16,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 05:04:20,347 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 153 check-sat command(s) [2024-11-28 05:04:20,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:20,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 4003 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:04:20,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 18482 proven. 24347 refuted. 0 times theorem prover too weak. 406132 trivial. 0 not checked. [2024-11-28 05:04:20,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 18494 proven. 24586 refuted. 0 times theorem prover too weak. 405881 trivial. 0 not checked. [2024-11-28 05:04:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720122739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:34,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:34,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 33] total 42 [2024-11-28 05:04:34,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705584060] [2024-11-28 05:04:34,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:34,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 05:04:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:34,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 05:04:34,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 05:04:34,826 INFO L87 Difference]: Start difference. First operand 266 states and 368 transitions. Second operand has 42 states, 42 states have (on average 5.476190476190476) internal successors, (230), 42 states have internal predecessors, (230), 29 states have call successors, (39), 1 states have call predecessors, (39), 17 states have return successors, (50), 26 states have call predecessors, (50), 29 states have call successors, (50) [2024-11-28 05:04:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:36,222 INFO L93 Difference]: Finished difference Result 653 states and 905 transitions. [2024-11-28 05:04:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 05:04:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.476190476190476) internal successors, (230), 42 states have internal predecessors, (230), 29 states have call successors, (39), 1 states have call predecessors, (39), 17 states have return successors, (50), 26 states have call predecessors, (50), 29 states have call successors, (50) Word has length 3485 [2024-11-28 05:04:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:36,227 INFO L225 Difference]: With dead ends: 653 [2024-11-28 05:04:36,227 INFO L226 Difference]: Without dead ends: 362 [2024-11-28 05:04:36,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7047 GetRequests, 6948 SyntacticMatches, 17 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1666, Invalid=5306, Unknown=0, NotChecked=0, Total=6972 [2024-11-28 05:04:36,230 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 344 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:36,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 356 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:36,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-28 05:04:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 251. [2024-11-28 05:04:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 204 states have (on average 1.0196078431372548) internal successors, (208), 201 states have internal predecessors, (208), 34 states have call successors, (34), 27 states have call predecessors, (34), 12 states have return successors, (80), 22 states have call predecessors, (80), 33 states have call successors, (80) [2024-11-28 05:04:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 322 transitions. [2024-11-28 05:04:36,266 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 322 transitions. Word has length 3485 [2024-11-28 05:04:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:36,269 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 322 transitions. [2024-11-28 05:04:36,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.476190476190476) internal successors, (230), 42 states have internal predecessors, (230), 29 states have call successors, (39), 1 states have call predecessors, (39), 17 states have return successors, (50), 26 states have call predecessors, (50), 29 states have call successors, (50) [2024-11-28 05:04:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 322 transitions. [2024-11-28 05:04:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8494 [2024-11-28 05:04:36,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:36,649 INFO L218 NwaCegarLoop]: trace histogram [869, 861, 704, 437, 437, 437, 437, 431, 431, 431, 431, 431, 430, 430, 430, 429, 267, 165, 1, 1, 1, 1, 1] [2024-11-28 05:04:36,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 05:04:36,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 05:04:36,849 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:04:36,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -95746469, now seen corresponding path program 19 times [2024-11-28 05:04:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028511003] [2024-11-28 05:04:36,852 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:04:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2675371 backedges. 22631 proven. 100975 refuted. 0 times theorem prover too weak. 2551765 trivial. 0 not checked. [2024-11-28 05:06:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028511003] [2024-11-28 05:06:40,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028511003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:40,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366932720] [2024-11-28 05:06:40,676 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:06:40,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:40,683 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:40,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:06:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:45,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 15701 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 05:06:45,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2675371 backedges. 1212578 proven. 65171 refuted. 0 times theorem prover too weak. 1397622 trivial. 0 not checked. [2024-11-28 05:06:46,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2675371 backedges. 26975 proven. 111638 refuted. 0 times theorem prover too weak. 2536758 trivial. 0 not checked. [2024-11-28 05:07:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366932720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:14,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:14,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 40] total 45 [2024-11-28 05:07:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769797414] [2024-11-28 05:07:14,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:14,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 05:07:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:14,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 05:07:14,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1695, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 05:07:14,054 INFO L87 Difference]: Start difference. First operand 251 states and 322 transitions. Second operand has 45 states, 45 states have (on average 5.888888888888889) internal successors, (265), 45 states have internal predecessors, (265), 40 states have call successors, (47), 9 states have call predecessors, (47), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-28 05:07:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:15,598 INFO L93 Difference]: Finished difference Result 589 states and 826 transitions. [2024-11-28 05:07:15,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 05:07:15,599 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.888888888888889) internal successors, (265), 45 states have internal predecessors, (265), 40 states have call successors, (47), 9 states have call predecessors, (47), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) Word has length 8493 [2024-11-28 05:07:15,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:15,604 INFO L225 Difference]: With dead ends: 589 [2024-11-28 05:07:15,605 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 05:07:15,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17082 GetRequests, 16958 SyntacticMatches, 30 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2599 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2326, Invalid=6794, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 05:07:15,608 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 579 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:15,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 234 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:07:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 05:07:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 263. [2024-11-28 05:07:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 211 states have internal predecessors, (217), 36 states have call successors, (36), 28 states have call predecessors, (36), 13 states have return successors, (90), 23 states have call predecessors, (90), 35 states have call successors, (90) [2024-11-28 05:07:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 343 transitions. [2024-11-28 05:07:15,650 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 343 transitions. Word has length 8493 [2024-11-28 05:07:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:15,654 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 343 transitions. [2024-11-28 05:07:15,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.888888888888889) internal successors, (265), 45 states have internal predecessors, (265), 40 states have call successors, (47), 9 states have call predecessors, (47), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-28 05:07:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 343 transitions. [2024-11-28 05:07:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4565 [2024-11-28 05:07:15,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:15,920 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 05:07:15,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 05:07:16,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e687ef2-8586-498b-8816-d7c1eb897875/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:16,120 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 05:07:16,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:16,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290130, now seen corresponding path program 20 times [2024-11-28 05:07:16,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:16,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824253842] [2024-11-28 05:07:16,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:16,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:18,113 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:18,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat