./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci04.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_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/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_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/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_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/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 8d1a4b1841ad6fa39491d7c82c38d46725a7eceb7c19c007d9e026b8eedadeb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:16:30,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:16:31,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 23:16:31,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:16:31,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:16:31,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:16:31,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:16:31,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:16:31,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:16:31,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:16:31,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:16:31,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:16:31,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:16:31,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:16:31,110 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:16:31,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:16:31,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:16:31,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:16:31,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:16:31,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:16:31,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:16:31,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:16:31,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:16:31,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:16:31,113 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:16:31,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:16:31,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:16:31,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:16:31,113 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:16:31,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:16:31,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:31,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:16:31,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:31,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:16:31,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:16:31,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:16:31,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:16:31,117 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_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/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 -> 8d1a4b1841ad6fa39491d7c82c38d46725a7eceb7c19c007d9e026b8eedadeb5 [2024-11-27 23:16:31,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:16:31,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:16:31,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:16:31,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:16:31,503 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:16:31,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive/Fibonacci04.c [2024-11-27 23:16:35,158 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/data/12e7bf007/9adea6cddbce4ac1abee1ea14da00542/FLAG7fd49aa8b [2024-11-27 23:16:35,469 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:16:35,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/sv-benchmarks/c/recursive/Fibonacci04.c [2024-11-27 23:16:35,482 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/data/12e7bf007/9adea6cddbce4ac1abee1ea14da00542/FLAG7fd49aa8b [2024-11-27 23:16:35,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/data/12e7bf007/9adea6cddbce4ac1abee1ea14da00542 [2024-11-27 23:16:35,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:16:35,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:16:35,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:16:35,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:16:35,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:16:35,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b11a2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35, skipping insertion in model container [2024-11-27 23:16:35,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:16:35,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:16:35,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:16:35,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:16:35,777 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:16:35,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35 WrapperNode [2024-11-27 23:16:35,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:16:35,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:16:35,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:16:35,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:16:35,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,818 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-11-27 23:16:35,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:16:35,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:16:35,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:16:35,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:16:35,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,834 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,854 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]. [2024-11-27 23:16:35,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,858 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:16:35,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:16:35,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:16:35,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:16:35,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (1/1) ... [2024-11-27 23:16:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:35,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:35,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:16:35,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:16:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-27 23:16:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-27 23:16:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:16:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:16:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:16:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:16:36,025 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:16:36,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:16:36,253 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-27 23:16:36,254 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:16:36,270 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:16:36,270 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:16:36,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:36 BoogieIcfgContainer [2024-11-27 23:16:36,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:16:36,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:16:36,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:16:36,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:16:36,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:16:35" (1/3) ... [2024-11-27 23:16:36,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446269d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:16:36, skipping insertion in model container [2024-11-27 23:16:36,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:35" (2/3) ... [2024-11-27 23:16:36,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446269d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:16:36, skipping insertion in model container [2024-11-27 23:16:36,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:36" (3/3) ... [2024-11-27 23:16:36,288 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2024-11-27 23:16:36,310 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:16:36,313 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci04.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-11-27 23:16:36,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:16:36,412 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;@333d8200, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:16:36,413 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-27 23:16:36,418 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) [2024-11-27 23:16:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 23:16:36,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:36,426 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:36,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:36,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash 629029755, now seen corresponding path program 1 times [2024-11-27 23:16:36,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:36,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765320605] [2024-11-27 23:16:36,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:36,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:36,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765320605] [2024-11-27 23:16:36,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765320605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:36,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:36,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:16:36,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63708248] [2024-11-27 23:16:36,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:36,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:16:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:36,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:16:36,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:16:36,713 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) [2024-11-27 23:16:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:36,771 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-27 23:16:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:16:36,774 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 [2024-11-27 23:16:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:36,782 INFO L225 Difference]: With dead ends: 37 [2024-11-27 23:16:36,782 INFO L226 Difference]: Without dead ends: 25 [2024-11-27 23:16:36,785 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 [2024-11-27 23:16:36,789 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 [2024-11-27 23:16:36,790 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] [2024-11-27 23:16:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-27 23:16:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-27 23:16:36,834 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) [2024-11-27 23:16:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-27 23:16:36,840 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2024-11-27 23:16:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:36,841 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-27 23:16:36,841 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) [2024-11-27 23:16:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-27 23:16:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:16:36,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:36,842 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:36,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:16:36,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:36,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1974914033, now seen corresponding path program 1 times [2024-11-27 23:16:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:36,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818720828] [2024-11-27 23:16:36,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:36,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818720828] [2024-11-27 23:16:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818720828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:37,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:16:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893144527] [2024-11-27 23:16:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:37,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:16:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:37,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:16:37,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:16:37,016 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) [2024-11-27 23:16:37,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:37,152 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-27 23:16:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:16:37,153 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 [2024-11-27 23:16:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:37,154 INFO L225 Difference]: With dead ends: 25 [2024-11-27 23:16:37,154 INFO L226 Difference]: Without dead ends: 23 [2024-11-27 23:16:37,155 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 [2024-11-27 23:16:37,157 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 [2024-11-27 23:16:37,159 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] [2024-11-27 23:16:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-27 23:16:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-27 23:16:37,170 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) [2024-11-27 23:16:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-27 23:16:37,174 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2024-11-27 23:16:37,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:37,174 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-27 23:16:37,174 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) [2024-11-27 23:16:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-27 23:16:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-27 23:16:37,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:37,175 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] [2024-11-27 23:16:37,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:16:37,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:37,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1558234811, now seen corresponding path program 1 times [2024-11-27 23:16:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:37,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902469239] [2024-11-27 23:16:37,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:37,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:16:37,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:37,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902469239] [2024-11-27 23:16:37,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902469239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:37,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:37,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:16:37,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652146183] [2024-11-27 23:16:37,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:37,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:16:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:37,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:16:37,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:16:37,446 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) [2024-11-27 23:16:37,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:37,514 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-27 23:16:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:16:37,516 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 [2024-11-27 23:16:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:37,517 INFO L225 Difference]: With dead ends: 35 [2024-11-27 23:16:37,519 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 23:16:37,519 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 [2024-11-27 23:16:37,520 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 [2024-11-27 23:16:37,524 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] [2024-11-27 23:16:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 23:16:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-11-27 23:16:37,539 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) [2024-11-27 23:16:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-27 23:16:37,544 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2024-11-27 23:16:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:37,544 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-27 23:16:37,544 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) [2024-11-27 23:16:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-27 23:16:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-27 23:16:37,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:37,546 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] [2024-11-27 23:16:37,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:16:37,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:37,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash 171916151, now seen corresponding path program 1 times [2024-11-27 23:16:37,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:37,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058027442] [2024-11-27 23:16:37,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:37,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:16:37,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058027442] [2024-11-27 23:16:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058027442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983839413] [2024-11-27 23:16:37,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:37,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:37,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:16:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:37,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:16:37,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 23:16:38,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 23:16:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983839413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:38,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:38,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-27 23:16:38,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139828897] [2024-11-27 23:16:38,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:38,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:16:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:38,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:16:38,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:16:38,339 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) [2024-11-27 23:16:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:38,812 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-11-27 23:16:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:16:38,813 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 [2024-11-27 23:16:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:38,815 INFO L225 Difference]: With dead ends: 91 [2024-11-27 23:16:38,815 INFO L226 Difference]: Without dead ends: 65 [2024-11-27 23:16:38,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:16:38,818 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:38,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 92 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:16:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-27 23:16:38,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2024-11-27 23:16:38,833 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) [2024-11-27 23:16:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-27 23:16:38,836 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2024-11-27 23:16:38,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:38,836 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-27 23:16:38,837 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) [2024-11-27 23:16:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-27 23:16:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 23:16:38,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:38,838 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:38,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:39,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:39,043 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:39,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1070767867, now seen corresponding path program 2 times [2024-11-27 23:16:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:39,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502319589] [2024-11-27 23:16:39,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:39,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:39,061 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:39,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 23:16:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502319589] [2024-11-27 23:16:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502319589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698768828] [2024-11-27 23:16:39,285 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:39,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:39,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:39,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:39,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:16:39,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:39,349 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:39,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:16:39,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 23:16:39,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:16:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698768828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:39,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:16:39,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-27 23:16:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674799845] [2024-11-27 23:16:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:39,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:16:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:39,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:16:39,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:39,445 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) [2024-11-27 23:16:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:39,498 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-27 23:16:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:16:39,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-27 23:16:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:39,501 INFO L225 Difference]: With dead ends: 60 [2024-11-27 23:16:39,504 INFO L226 Difference]: Without dead ends: 59 [2024-11-27 23:16:39,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:39,505 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 [2024-11-27 23:16:39,506 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] [2024-11-27 23:16:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-27 23:16:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-11-27 23:16:39,531 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) [2024-11-27 23:16:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-11-27 23:16:39,537 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2024-11-27 23:16:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:39,537 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-11-27 23:16:39,538 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) [2024-11-27 23:16:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-11-27 23:16:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 23:16:39,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:39,539 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:39,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:16:39,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:39,740 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:39,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1165934437, now seen corresponding path program 1 times [2024-11-27 23:16:39,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:39,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645321906] [2024-11-27 23:16:39,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:39,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 23:16:39,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645321906] [2024-11-27 23:16:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645321906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892804541] [2024-11-27 23:16:39,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:39,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:39,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:39,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:16:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:39,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:16:39,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 23:16:40,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:16:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892804541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:16:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-27 23:16:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318566831] [2024-11-27 23:16:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:40,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:16:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:40,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:16:40,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:16:40,066 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) [2024-11-27 23:16:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:40,140 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-11-27 23:16:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:16:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-27 23:16:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:40,143 INFO L225 Difference]: With dead ends: 82 [2024-11-27 23:16:40,143 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 23:16:40,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:16:40,145 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:40,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 71 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 23:16:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-11-27 23:16:40,169 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) [2024-11-27 23:16:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2024-11-27 23:16:40,172 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 26 [2024-11-27 23:16:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:40,172 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2024-11-27 23:16:40,172 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) [2024-11-27 23:16:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2024-11-27 23:16:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 23:16:40,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:40,176 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:40,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:40,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:40,381 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:40,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash -728410920, now seen corresponding path program 1 times [2024-11-27 23:16:40,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:40,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340930983] [2024-11-27 23:16:40,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:16:40,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:40,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340930983] [2024-11-27 23:16:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340930983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:40,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992870496] [2024-11-27 23:16:40,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:40,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:40,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:40,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:40,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:16:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:40,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:16:40,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 23:16:40,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 23:16:41,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992870496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:41,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:41,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-27 23:16:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490926070] [2024-11-27 23:16:41,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:41,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:16:41,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:41,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:16:41,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:16:41,214 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) [2024-11-27 23:16:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:41,568 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2024-11-27 23:16:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:16:41,570 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 46 [2024-11-27 23:16:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:41,577 INFO L225 Difference]: With dead ends: 141 [2024-11-27 23:16:41,577 INFO L226 Difference]: Without dead ends: 139 [2024-11-27 23:16:41,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:16:41,579 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:41,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 160 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:16:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-27 23:16:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2024-11-27 23:16:41,624 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) [2024-11-27 23:16:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2024-11-27 23:16:41,628 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 46 [2024-11-27 23:16:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:41,629 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2024-11-27 23:16:41,629 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) [2024-11-27 23:16:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2024-11-27 23:16:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 23:16:41,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:41,633 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-27 23:16:41,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:41,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:41,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:41,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1625603394, now seen corresponding path program 1 times [2024-11-27 23:16:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:41,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64366519] [2024-11-27 23:16:41,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:41,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 38 proven. 86 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-27 23:16:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64366519] [2024-11-27 23:16:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64366519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537160871] [2024-11-27 23:16:42,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:42,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:42,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:42,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:42,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:16:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:42,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:16:42,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 50 proven. 92 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:16:42,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 50 proven. 95 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 23:16:43,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537160871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:43,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:43,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-11-27 23:16:43,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177454711] [2024-11-27 23:16:43,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:43,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:16:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:43,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:16:43,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:16:43,049 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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) [2024-11-27 23:16:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:43,326 INFO L93 Difference]: Finished difference Result 174 states and 299 transitions. [2024-11-27 23:16:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:16:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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 84 [2024-11-27 23:16:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:43,329 INFO L225 Difference]: With dead ends: 174 [2024-11-27 23:16:43,329 INFO L226 Difference]: Without dead ends: 80 [2024-11-27 23:16:43,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 160 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:16:43,334 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 61 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:43,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 66 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-27 23:16:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-11-27 23:16:43,351 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) [2024-11-27 23:16:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-11-27 23:16:43,357 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 84 [2024-11-27 23:16:43,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:43,357 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-11-27 23:16:43,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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) [2024-11-27 23:16:43,358 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-11-27 23:16:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-27 23:16:43,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:43,366 INFO L218 NwaCegarLoop]: trace histogram [12, 10, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2024-11-27 23:16:43,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:43,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:43,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:43,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1887443395, now seen corresponding path program 2 times [2024-11-27 23:16:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264437163] [2024-11-27 23:16:43,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:43,612 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:43,612 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 53 proven. 96 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-27 23:16:43,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:43,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264437163] [2024-11-27 23:16:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264437163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945326552] [2024-11-27 23:16:43,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:43,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:43,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:43,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:16:43,969 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:43,970 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:43,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:16:43,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 228 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-27 23:16:44,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 56 proven. 121 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-27 23:16:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945326552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:44,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:44,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-27 23:16:44,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990138024] [2024-11-27 23:16:44,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:44,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:16:44,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:44,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:16:44,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:16:44,574 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) [2024-11-27 23:16:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:44,756 INFO L93 Difference]: Finished difference Result 129 states and 179 transitions. [2024-11-27 23:16:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:16:44,758 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 109 [2024-11-27 23:16:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:44,759 INFO L225 Difference]: With dead ends: 129 [2024-11-27 23:16:44,760 INFO L226 Difference]: Without dead ends: 63 [2024-11-27 23:16:44,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:16:44,761 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:44,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 81 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-27 23:16:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-11-27 23:16:44,781 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) [2024-11-27 23:16:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-27 23:16:44,782 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 109 [2024-11-27 23:16:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:44,783 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-27 23:16:44,786 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) [2024-11-27 23:16:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-27 23:16:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:16:44,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:44,788 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] [2024-11-27 23:16:44,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:44,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:44,989 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:44,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1731852194, now seen corresponding path program 3 times [2024-11-27 23:16:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95870696] [2024-11-27 23:16:44,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:45,014 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:16:45,015 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 206 proven. 18 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-27 23:16:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95870696] [2024-11-27 23:16:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95870696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211671986] [2024-11-27 23:16:45,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:45,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:45,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:16:45,242 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:16:45,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:45,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:16:45,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 203 proven. 21 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-27 23:16:45,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 203 proven. 22 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-27 23:16:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211671986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:45,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2024-11-27 23:16:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47827215] [2024-11-27 23:16:45,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:45,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:16:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:45,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:16:45,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:16:45,859 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) [2024-11-27 23:16:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:46,022 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2024-11-27 23:16:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:16:46,024 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 [2024-11-27 23:16:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:46,027 INFO L225 Difference]: With dead ends: 114 [2024-11-27 23:16:46,028 INFO L226 Difference]: Without dead ends: 59 [2024-11-27 23:16:46,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:16:46,030 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:46,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 83 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-27 23:16:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-11-27 23:16:46,045 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) [2024-11-27 23:16:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-27 23:16:46,050 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 130 [2024-11-27 23:16:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:46,050 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-27 23:16:46,051 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) [2024-11-27 23:16:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-27 23:16:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 23:16:46,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:46,052 INFO L218 NwaCegarLoop]: trace histogram [17, 15, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 3, 1, 1, 1, 1, 1] [2024-11-27 23:16:46,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:46,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:46,253 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1713086498, now seen corresponding path program 4 times [2024-11-27 23:16:46,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:46,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714500487] [2024-11-27 23:16:46,254 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:46,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:46,283 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:46,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 91 proven. 355 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-27 23:16:46,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714500487] [2024-11-27 23:16:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714500487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957481200] [2024-11-27 23:16:46,594 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:46,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:46,597 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:46,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:16:46,687 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:46,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:46,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:16:46,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 463 proven. 189 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-27 23:16:46,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-27 23:16:47,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957481200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:47,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:47,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 19 [2024-11-27 23:16:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552858009] [2024-11-27 23:16:47,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:47,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:16:47,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:47,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:16:47,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:16:47,629 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) [2024-11-27 23:16:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:47,941 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-27 23:16:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:16:47,942 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 158 [2024-11-27 23:16:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:47,943 INFO L225 Difference]: With dead ends: 126 [2024-11-27 23:16:47,943 INFO L226 Difference]: Without dead ends: 75 [2024-11-27 23:16:47,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 306 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:16:47,947 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 167 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:47,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 100 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:16:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-27 23:16:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2024-11-27 23:16:47,960 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) [2024-11-27 23:16:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-27 23:16:47,961 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 158 [2024-11-27 23:16:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:47,962 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-27 23:16:47,962 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) [2024-11-27 23:16:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-27 23:16:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 23:16:47,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:47,963 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-27 23:16:47,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:16:48,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:48,167 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:48,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1988790978, now seen corresponding path program 5 times [2024-11-27 23:16:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:48,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652238990] [2024-11-27 23:16:48,172 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:16:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:48,192 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-27 23:16:48,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-27 23:16:48,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652238990] [2024-11-27 23:16:48,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652238990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592559998] [2024-11-27 23:16:48,495 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:16:48,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:48,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:48,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:48,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:16:48,575 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-27 23:16:48,575 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:48,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:16:48,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-27 23:16:48,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 69 proven. 12 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-27 23:16:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592559998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:49,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:49,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 12] total 22 [2024-11-27 23:16:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776060563] [2024-11-27 23:16:49,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:49,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:16:49,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:49,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:16:49,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:16:49,414 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (17), 15 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-27 23:16:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:49,513 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2024-11-27 23:16:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:16:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (17), 15 states have call predecessors, (17), 6 states have call successors, (17) Word has length 84 [2024-11-27 23:16:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:49,515 INFO L225 Difference]: With dead ends: 63 [2024-11-27 23:16:49,515 INFO L226 Difference]: Without dead ends: 62 [2024-11-27 23:16:49,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 151 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:16:49,516 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:49,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 180 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-27 23:16:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-27 23:16:49,529 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) [2024-11-27 23:16:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-27 23:16:49,530 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 84 [2024-11-27 23:16:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:49,532 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-27 23:16:49,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (17), 15 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-27 23:16:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-27 23:16:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:16:49,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:49,533 INFO L218 NwaCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1] [2024-11-27 23:16:49,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:49,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:16:49,734 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:49,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1463816598, now seen corresponding path program 2 times [2024-11-27 23:16:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103625259] [2024-11-27 23:16:49,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:49,760 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:49,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 55 proven. 137 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-27 23:16:50,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103625259] [2024-11-27 23:16:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103625259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005881433] [2024-11-27 23:16:50,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:50,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:50,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:50,381 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:50,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:16:50,502 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:50,502 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:50,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:16:50,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 167 proven. 182 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-27 23:16:50,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 167 proven. 202 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-27 23:16:51,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005881433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:51,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:51,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 30 [2024-11-27 23:16:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939489231] [2024-11-27 23:16:51,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:51,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:16:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:51,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:16:51,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:16:51,944 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) [2024-11-27 23:16:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:52,795 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2024-11-27 23:16:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:16:52,796 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 130 [2024-11-27 23:16:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:52,797 INFO L225 Difference]: With dead ends: 136 [2024-11-27 23:16:52,797 INFO L226 Difference]: Without dead ends: 80 [2024-11-27 23:16:52,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 249 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 23:16:52,800 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 188 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:52,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 117 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:16:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-27 23:16:52,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-27 23:16:52,808 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) [2024-11-27 23:16:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-11-27 23:16:52,810 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 130 [2024-11-27 23:16:52,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:52,810 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-11-27 23:16:52,811 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) [2024-11-27 23:16:52,811 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-11-27 23:16:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-27 23:16:52,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:52,813 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1, 1] [2024-11-27 23:16:52,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:16:53,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:53,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:53,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1841209009, now seen corresponding path program 3 times [2024-11-27 23:16:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:53,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-27 23:16:53,015 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:53,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:53,067 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:16:53,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-11-27 23:16:53,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:53,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-27 23:16:53,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197064742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:53,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850202865] [2024-11-27 23:16:53,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:53,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:53,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:53,859 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:53,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:16:53,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:16:53,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:53,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:16:53,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-27 23:16:54,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-27 23:16:56,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850202865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:56,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:56,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2024-11-27 23:16:56,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134438500] [2024-11-27 23:16:56,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:56,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:16:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:56,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:16:56,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:16:56,054 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-27 23:16:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:56,360 INFO L93 Difference]: Finished difference Result 117 states and 156 transitions. [2024-11-27 23:16:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 23:16:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 144 [2024-11-27 23:16:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:56,362 INFO L225 Difference]: With dead ends: 117 [2024-11-27 23:16:56,363 INFO L226 Difference]: Without dead ends: 116 [2024-11-27 23:16:56,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 272 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:16:56,364 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:56,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 166 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:16:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-27 23:16:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-11-27 23:16:56,377 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) [2024-11-27 23:16:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2024-11-27 23:16:56,379 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 144 [2024-11-27 23:16:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:56,379 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2024-11-27 23:16:56,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 32 states have internal predecessors, (85), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-27 23:16:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2024-11-27 23:16:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-27 23:16:56,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:56,387 INFO L218 NwaCegarLoop]: trace histogram [40, 38, 32, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 12, 8, 1, 1, 1, 1, 1] [2024-11-27 23:16:56,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:16:56,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:16:56,592 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:16:56,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2062187349, now seen corresponding path program 4 times [2024-11-27 23:16:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:56,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864703974] [2024-11-27 23:16:56,593 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:56,648 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:56,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5229 backedges. 455 proven. 1234 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2024-11-27 23:16:57,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:57,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864703974] [2024-11-27 23:16:57,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864703974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:57,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928519730] [2024-11-27 23:16:57,092 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:57,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:57,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:57,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:57,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:16:57,281 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:57,282 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:57,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:16:57,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5229 backedges. 426 proven. 1723 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2024-11-27 23:16:57,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5229 backedges. 426 proven. 1762 refuted. 0 times theorem prover too weak. 3041 trivial. 0 not checked. [2024-11-27 23:16:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928519730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:59,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 24 [2024-11-27 23:16:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333180380] [2024-11-27 23:16:59,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:59,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:16:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:59,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:16:59,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:16:59,490 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) [2024-11-27 23:16:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:59,964 INFO L93 Difference]: Finished difference Result 214 states and 308 transitions. [2024-11-27 23:16:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:16:59,965 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 385 [2024-11-27 23:16:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:59,970 INFO L225 Difference]: With dead ends: 214 [2024-11-27 23:16:59,970 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 23:16:59,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 756 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1144, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 23:16:59,974 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 122 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:59,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 147 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:16:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 23:16:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2024-11-27 23:16:59,994 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) [2024-11-27 23:16:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-11-27 23:16:59,997 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 385 [2024-11-27 23:16:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:00,000 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-11-27 23:17:00,000 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) [2024-11-27 23:17:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-11-27 23:17:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-27 23:17:00,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:00,007 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] [2024-11-27 23:17:00,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:00,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:17:00,211 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:00,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2085379565, now seen corresponding path program 5 times [2024-11-27 23:17:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:00,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135658987] [2024-11-27 23:17:00,213 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:00,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:00,271 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-27 23:17:00,271 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 767 proven. 782 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2024-11-27 23:17:00,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:00,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135658987] [2024-11-27 23:17:00,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135658987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:00,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470139274] [2024-11-27 23:17:00,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:00,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:00,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:00,894 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:00,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:17:01,080 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-27 23:17:01,080 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:01,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 23:17:01,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 814 proven. 814 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2024-11-27 23:17:01,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 822 proven. 861 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2024-11-27 23:17:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470139274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:03,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 21] total 27 [2024-11-27 23:17:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386153488] [2024-11-27 23:17:03,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:03,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 23:17:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:03,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 23:17:03,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:17:03,479 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) [2024-11-27 23:17:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:04,238 INFO L93 Difference]: Finished difference Result 264 states and 349 transitions. [2024-11-27 23:17:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:17:04,239 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 [2024-11-27 23:17:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:04,243 INFO L225 Difference]: With dead ends: 264 [2024-11-27 23:17:04,243 INFO L226 Difference]: Without dead ends: 150 [2024-11-27 23:17:04,246 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 [2024-11-27 23:17:04,247 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 183 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:04,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 157 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:17:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-27 23:17:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2024-11-27 23:17:04,265 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) [2024-11-27 23:17:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2024-11-27 23:17:04,268 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 301 [2024-11-27 23:17:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:04,268 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2024-11-27 23:17:04,269 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) [2024-11-27 23:17:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2024-11-27 23:17:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-27 23:17:04,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:04,280 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] [2024-11-27 23:17:04,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:17:04,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:17:04,481 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:04,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1264030145, now seen corresponding path program 6 times [2024-11-27 23:17:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:04,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988473533] [2024-11-27 23:17:04,482 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:04,567 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 23:17:04,568 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 688 proven. 794 refuted. 0 times theorem prover too weak. 1668 trivial. 0 not checked. [2024-11-27 23:17:05,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:05,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988473533] [2024-11-27 23:17:05,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988473533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348466363] [2024-11-27 23:17:05,161 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:05,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:05,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:05,163 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:05,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:17:05,365 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 23:17:05,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:05,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:17:05,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 690 proven. 793 refuted. 0 times theorem prover too weak. 1667 trivial. 0 not checked. [2024-11-27 23:17:05,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 706 proven. 824 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2024-11-27 23:17:07,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348466363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:07,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:07,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2024-11-27 23:17:07,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870356865] [2024-11-27 23:17:07,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:07,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:17:07,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:07,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:17:07,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:17:07,288 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) [2024-11-27 23:17:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:07,778 INFO L93 Difference]: Finished difference Result 262 states and 351 transitions. [2024-11-27 23:17:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:17:07,779 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 [2024-11-27 23:17:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:07,781 INFO L225 Difference]: With dead ends: 262 [2024-11-27 23:17:07,781 INFO L226 Difference]: Without dead ends: 137 [2024-11-27 23:17:07,782 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 [2024-11-27 23:17:07,783 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 108 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:07,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 220 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:17:07,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-27 23:17:07,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-11-27 23:17:07,797 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) [2024-11-27 23:17:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2024-11-27 23:17:07,799 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 301 [2024-11-27 23:17:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:07,800 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2024-11-27 23:17:07,800 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) [2024-11-27 23:17:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2024-11-27 23:17:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2024-11-27 23:17:07,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:07,807 INFO L218 NwaCegarLoop]: trace histogram [69, 65, 56, 35, 35, 35, 35, 33, 33, 33, 33, 33, 32, 32, 32, 31, 21, 13, 1, 1, 1, 1, 1] [2024-11-27 23:17:07,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:17:08,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 23:17:08,011 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:08,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1821776615, now seen corresponding path program 7 times [2024-11-27 23:17:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:08,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139148323] [2024-11-27 23:17:08,012 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 1164 proven. 3497 refuted. 0 times theorem prover too weak. 11116 trivial. 0 not checked. [2024-11-27 23:17:09,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139148323] [2024-11-27 23:17:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139148323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320712728] [2024-11-27 23:17:09,942 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:09,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:09,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:09,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:17:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:10,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:17:10,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 6828 proven. 2740 refuted. 0 times theorem prover too weak. 6209 trivial. 0 not checked. [2024-11-27 23:17:10,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 1409 proven. 4200 refuted. 0 times theorem prover too weak. 10168 trivial. 0 not checked. [2024-11-27 23:17:13,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320712728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:13,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:13,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 25] total 30 [2024-11-27 23:17:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512871506] [2024-11-27 23:17:13,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:13,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:17:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:13,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:17:13,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:17:13,670 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 30 states, 30 states have (on average 6.0) internal successors, (180), 30 states have internal predecessors, (180), 25 states have call successors, (32), 4 states have call predecessors, (32), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-27 23:17:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:14,450 INFO L93 Difference]: Finished difference Result 283 states and 370 transitions. [2024-11-27 23:17:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:17:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.0) internal successors, (180), 30 states have internal predecessors, (180), 25 states have call successors, (32), 4 states have call predecessors, (32), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) Word has length 661 [2024-11-27 23:17:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:14,454 INFO L225 Difference]: With dead ends: 283 [2024-11-27 23:17:14,454 INFO L226 Difference]: Without dead ends: 167 [2024-11-27 23:17:14,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1304 SyntacticMatches, 15 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=796, Invalid=2284, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 23:17:14,460 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 356 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:14,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 164 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:17:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-27 23:17:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 131. [2024-11-27 23:17:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 104 states have internal predecessors, (109), 17 states have call successors, (17), 13 states have call predecessors, (17), 8 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-11-27 23:17:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2024-11-27 23:17:14,480 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 661 [2024-11-27 23:17:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:14,484 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2024-11-27 23:17:14,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.0) internal successors, (180), 30 states have internal predecessors, (180), 25 states have call successors, (32), 4 states have call predecessors, (32), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-27 23:17:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2024-11-27 23:17:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-27 23:17:14,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:14,489 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] [2024-11-27 23:17:14,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:14,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:17:14,693 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:14,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1368637202, now seen corresponding path program 8 times [2024-11-27 23:17:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856299789] [2024-11-27 23:17:14,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:14,766 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:14,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 830 proven. 1470 refuted. 0 times theorem prover too weak. 3503 trivial. 0 not checked. [2024-11-27 23:17:17,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:17,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856299789] [2024-11-27 23:17:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856299789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291226193] [2024-11-27 23:17:17,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:17,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:17,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:17,981 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:17,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:17:18,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:18,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:18,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-27 23:17:18,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2024-11-27 23:17:18,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2024-11-27 23:17:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291226193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:28,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:28,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2024-11-27 23:17:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310082766] [2024-11-27 23:17:28,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:28,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:17:28,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:28,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:17:28,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:17:28,979 INFO L87 Difference]: Start difference. First operand 131 states and 162 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) [2024-11-27 23:17:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:29,303 INFO L93 Difference]: Finished difference Result 162 states and 216 transitions. [2024-11-27 23:17:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 23:17:29,304 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 [2024-11-27 23:17:29,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:29,307 INFO L225 Difference]: With dead ends: 162 [2024-11-27 23:17:29,307 INFO L226 Difference]: Without dead ends: 161 [2024-11-27 23:17:29,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 794 SyntacticMatches, 51 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 23:17:29,309 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:29,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 278 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:17:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-27 23:17:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 152. [2024-11-27 23:17:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 120 states have internal predecessors, (126), 19 states have call successors, (19), 13 states have call predecessors, (19), 10 states have return successors, (56), 18 states have call predecessors, (56), 18 states have call successors, (56) [2024-11-27 23:17:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 201 transitions. [2024-11-27 23:17:29,335 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 201 transitions. Word has length 405 [2024-11-27 23:17:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:29,336 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 201 transitions. [2024-11-27 23:17:29,336 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) [2024-11-27 23:17:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 201 transitions. [2024-11-27 23:17:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2024-11-27 23:17:29,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:29,345 INFO L218 NwaCegarLoop]: trace histogram [83, 82, 67, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1, 1] [2024-11-27 23:17:29,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:29,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:29,547 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:29,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1147088053, now seen corresponding path program 9 times [2024-11-27 23:17:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:29,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102963036] [2024-11-27 23:17:29,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:29,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:29,734 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2024-11-27 23:17:29,734 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2344 proven. 4189 refuted. 0 times theorem prover too weak. 17326 trivial. 0 not checked. [2024-11-27 23:17:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102963036] [2024-11-27 23:17:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102963036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901138605] [2024-11-27 23:17:30,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:30,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:30,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:30,891 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:30,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:17:31,483 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2024-11-27 23:17:31,483 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:31,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:17:31,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2324 proven. 4206 refuted. 0 times theorem prover too weak. 17329 trivial. 0 not checked. [2024-11-27 23:17:31,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 2324 proven. 4323 refuted. 0 times theorem prover too weak. 17212 trivial. 0 not checked. [2024-11-27 23:17:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901138605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:35,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:35,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 25] total 29 [2024-11-27 23:17:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492220388] [2024-11-27 23:17:35,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:35,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:17:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:35,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:17:35,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:17:35,573 INFO L87 Difference]: Start difference. First operand 152 states and 201 transitions. Second operand has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 19 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (32), 16 states have call predecessors, (32), 19 states have call successors, (32) [2024-11-27 23:17:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:36,374 INFO L93 Difference]: Finished difference Result 376 states and 537 transitions. [2024-11-27 23:17:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 23:17:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 19 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (32), 16 states have call predecessors, (32), 19 states have call successors, (32) Word has length 811 [2024-11-27 23:17:36,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:36,382 INFO L225 Difference]: With dead ends: 376 [2024-11-27 23:17:36,383 INFO L226 Difference]: Without dead ends: 230 [2024-11-27 23:17:36,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1675 GetRequests, 1610 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=766, Invalid=2204, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 23:17:36,387 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 577 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:36,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 194 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:17:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-27 23:17:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 188. [2024-11-27 23:17:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.0394736842105263) internal successors, (158), 149 states have internal predecessors, (158), 24 states have call successors, (24), 17 states have call predecessors, (24), 11 states have return successors, (65), 21 states have call predecessors, (65), 23 states have call successors, (65) [2024-11-27 23:17:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-11-27 23:17:36,426 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 811 [2024-11-27 23:17:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:36,427 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-11-27 23:17:36,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 19 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (32), 16 states have call predecessors, (32), 19 states have call successors, (32) [2024-11-27 23:17:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-11-27 23:17:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2024-11-27 23:17:36,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:36,438 INFO L218 NwaCegarLoop]: trace histogram [84, 82, 68, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1, 1] [2024-11-27 23:17:36,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:17:36,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:36,638 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:36,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1025803277, now seen corresponding path program 10 times [2024-11-27 23:17:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944599274] [2024-11-27 23:17:36,639 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:36,715 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:36,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 2309 proven. 4945 refuted. 0 times theorem prover too weak. 16961 trivial. 0 not checked. [2024-11-27 23:17:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:37,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944599274] [2024-11-27 23:17:37,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944599274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:37,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137193504] [2024-11-27 23:17:37,850 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:37,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:37,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:37,852 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:37,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:17:38,271 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:38,271 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:38,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:17:38,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 12370 proven. 2667 refuted. 0 times theorem prover too weak. 9178 trivial. 0 not checked. [2024-11-27 23:17:38,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 2300 proven. 5308 refuted. 0 times theorem prover too weak. 16607 trivial. 0 not checked. [2024-11-27 23:17:43,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137193504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:43,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:43,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 32 [2024-11-27 23:17:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680148464] [2024-11-27 23:17:43,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:43,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:17:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:43,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:17:43,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:17:43,433 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 32 states, 32 states have (on average 5.71875) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-27 23:17:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:44,086 INFO L93 Difference]: Finished difference Result 364 states and 497 transitions. [2024-11-27 23:17:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 23:17:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.71875) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) Word has length 817 [2024-11-27 23:17:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:44,092 INFO L225 Difference]: With dead ends: 364 [2024-11-27 23:17:44,092 INFO L226 Difference]: Without dead ends: 182 [2024-11-27 23:17:44,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1678 GetRequests, 1617 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 23:17:44,096 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 184 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:44,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 249 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:17:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-27 23:17:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 149. [2024-11-27 23:17:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.025) internal successors, (123), 118 states have internal predecessors, (123), 19 states have call successors, (19), 14 states have call predecessors, (19), 9 states have return successors, (45), 16 states have call predecessors, (45), 18 states have call successors, (45) [2024-11-27 23:17:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 187 transitions. [2024-11-27 23:17:44,123 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 187 transitions. Word has length 817 [2024-11-27 23:17:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:44,125 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 187 transitions. [2024-11-27 23:17:44,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.71875) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-27 23:17:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 187 transitions. [2024-11-27 23:17:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2024-11-27 23:17:44,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:44,137 INFO L218 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1, 1] [2024-11-27 23:17:44,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:17:44,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 23:17:44,338 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:17:44,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -997144710, now seen corresponding path program 11 times [2024-11-27 23:17:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449029330] [2024-11-27 23:17:44,339 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:44,549 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2024-11-27 23:17:44,549 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7345 proven. 10464 refuted. 0 times theorem prover too weak. 24125 trivial. 0 not checked. [2024-11-27 23:18:09,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:09,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449029330] [2024-11-27 23:18:09,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449029330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:09,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974281212] [2024-11-27 23:18:09,812 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:18:09,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:09,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:09,814 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:09,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:18:10,645 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2024-11-27 23:18:10,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:10,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-27 23:18:10,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2024-11-27 23:18:11,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2024-11-27 23:19:11,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974281212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:11,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:11,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 41] total 61 [2024-11-27 23:19:11,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209087735] [2024-11-27 23:19:11,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:11,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 23:19:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:11,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 23:19:11,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=853, Invalid=2929, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 23:19:11,914 INFO L87 Difference]: Start difference. First operand 149 states and 187 transitions. Second operand has 62 states, 61 states have (on average 2.6065573770491803) internal successors, (159), 62 states have internal predecessors, (159), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-27 23:19:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:12,425 INFO L93 Difference]: Finished difference Result 213 states and 311 transitions. [2024-11-27 23:19:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 23:19:12,426 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.6065573770491803) internal successors, (159), 62 states have internal predecessors, (159), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) Word has length 1072 [2024-11-27 23:19:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:12,431 INFO L225 Difference]: With dead ends: 213 [2024-11-27 23:19:12,432 INFO L226 Difference]: Without dead ends: 212 [2024-11-27 23:19:12,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 2107 SyntacticMatches, 192 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7874 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1098, Invalid=3872, Unknown=0, NotChecked=0, Total=4970 [2024-11-27 23:19:12,437 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:12,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 239 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:19:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-27 23:19:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 185. [2024-11-27 23:19:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 148 states have (on average 1.0202702702702702) internal successors, (151), 146 states have internal predecessors, (151), 23 states have call successors, (23), 14 states have call predecessors, (23), 13 states have return successors, (97), 24 states have call predecessors, (97), 22 states have call successors, (97) [2024-11-27 23:19:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 271 transitions. [2024-11-27 23:19:12,473 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 271 transitions. Word has length 1072 [2024-11-27 23:19:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:12,476 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 271 transitions. [2024-11-27 23:19:12,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.6065573770491803) internal successors, (159), 62 states have internal predecessors, (159), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (43), 43 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-27 23:19:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 271 transitions. [2024-11-27 23:19:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3318 [2024-11-27 23:19:12,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:12,556 INFO L218 NwaCegarLoop]: trace histogram [339, 337, 274, 169, 169, 169, 169, 169, 169, 169, 169, 169, 168, 168, 168, 167, 105, 65, 1, 1, 1, 1, 1] [2024-11-27 23:19:12,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:19:12,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 23:19:12,761 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:19:12,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 860558415, now seen corresponding path program 12 times [2024-11-27 23:19:12,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:12,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855301434] [2024-11-27 23:19:12,762 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:19:12,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:13,138 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2024-11-27 23:19:13,139 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:19:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 406671 backedges. 6557 proven. 33307 refuted. 0 times theorem prover too weak. 366807 trivial. 0 not checked. [2024-11-27 23:19:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855301434] [2024-11-27 23:19:15,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855301434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833446398] [2024-11-27 23:19:15,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:19:15,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:15,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:15,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:15,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:19:17,165 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2024-11-27 23:19:17,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:19:17,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:19:17,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 406671 backedges. 201858 proven. 9071 refuted. 0 times theorem prover too weak. 195742 trivial. 0 not checked. [2024-11-27 23:19:17,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 406671 backedges. 6847 proven. 34856 refuted. 0 times theorem prover too weak. 364968 trivial. 0 not checked. [2024-11-27 23:19:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833446398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:26,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:26,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 32] total 39 [2024-11-27 23:19:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842755800] [2024-11-27 23:19:26,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:26,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-27 23:19:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:26,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-27 23:19:26,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1223, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:19:27,000 INFO L87 Difference]: Start difference. First operand 185 states and 271 transitions. Second operand has 39 states, 39 states have (on average 5.948717948717949) internal successors, (232), 39 states have internal predecessors, (232), 34 states have call successors, (41), 3 states have call predecessors, (41), 16 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-27 23:19:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:28,229 INFO L93 Difference]: Finished difference Result 479 states and 756 transitions. [2024-11-27 23:19:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 23:19:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.948717948717949) internal successors, (232), 39 states have internal predecessors, (232), 34 states have call successors, (41), 3 states have call predecessors, (41), 16 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) Word has length 3317 [2024-11-27 23:19:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:28,237 INFO L225 Difference]: With dead ends: 479 [2024-11-27 23:19:28,237 INFO L226 Difference]: Without dead ends: 300 [2024-11-27 23:19:28,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6709 GetRequests, 6616 SyntacticMatches, 17 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1461, Invalid=4545, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 23:19:28,242 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 503 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:28,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 252 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:19:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-27 23:19:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 218. [2024-11-27 23:19:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 176 states have (on average 1.0227272727272727) internal successors, (180), 173 states have internal predecessors, (180), 28 states have call successors, (28), 20 states have call predecessors, (28), 13 states have return successors, (102), 24 states have call predecessors, (102), 27 states have call successors, (102) [2024-11-27 23:19:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 310 transitions. [2024-11-27 23:19:28,281 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 310 transitions. Word has length 3317 [2024-11-27 23:19:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:28,282 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 310 transitions. [2024-11-27 23:19:28,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.948717948717949) internal successors, (232), 39 states have internal predecessors, (232), 34 states have call successors, (41), 3 states have call predecessors, (41), 16 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) [2024-11-27 23:19:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 310 transitions. [2024-11-27 23:19:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2773 [2024-11-27 23:19:28,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:28,344 INFO L218 NwaCegarLoop]: trace histogram [285, 279, 231, 144, 144, 144, 144, 140, 140, 140, 140, 140, 139, 139, 139, 138, 87, 54, 1, 1, 1, 1, 1] [2024-11-27 23:19:28,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:19:28,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 23:19:28,545 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:19:28,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1661968834, now seen corresponding path program 13 times [2024-11-27 23:19:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117598240] [2024-11-27 23:19:28,548 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:19:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 283648 backedges. 6254 proven. 28464 refuted. 0 times theorem prover too weak. 248930 trivial. 0 not checked. [2024-11-27 23:19:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117598240] [2024-11-27 23:19:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117598240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815747649] [2024-11-27 23:19:40,064 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:19:40,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:40,066 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:40,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:19:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:41,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 5136 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 23:19:41,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 283648 backedges. 129949 proven. 5527 refuted. 0 times theorem prover too weak. 148172 trivial. 0 not checked. [2024-11-27 23:19:42,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 283648 backedges. 6699 proven. 31411 refuted. 0 times theorem prover too weak. 245538 trivial. 0 not checked. [2024-11-27 23:19:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815747649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:52,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:52,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-11-27 23:19:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576855910] [2024-11-27 23:19:52,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:52,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 23:19:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:52,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 23:19:52,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:19:52,177 INFO L87 Difference]: Start difference. First operand 218 states and 310 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) [2024-11-27 23:19:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:52,969 INFO L93 Difference]: Finished difference Result 454 states and 677 transitions. [2024-11-27 23:19:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:19:52,970 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 2772 [2024-11-27 23:19:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:52,976 INFO L225 Difference]: With dead ends: 454 [2024-11-27 23:19:52,976 INFO L226 Difference]: Without dead ends: 242 [2024-11-27 23:19:52,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5593 GetRequests, 5523 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 23:19:52,980 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 252 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:52,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 350 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:19:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-27 23:19:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 221. [2024-11-27 23:19:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 179 states have (on average 1.0223463687150838) internal successors, (183), 176 states have internal predecessors, (183), 29 states have call successors, (29), 22 states have call predecessors, (29), 12 states have return successors, (85), 22 states have call predecessors, (85), 28 states have call successors, (85) [2024-11-27 23:19:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 297 transitions. [2024-11-27 23:19:53,009 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 297 transitions. Word has length 2772 [2024-11-27 23:19:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:53,010 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 297 transitions. [2024-11-27 23:19:53,011 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) [2024-11-27 23:19:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 297 transitions. [2024-11-27 23:19:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2146 [2024-11-27 23:19:53,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:53,069 INFO L218 NwaCegarLoop]: trace histogram [219, 218, 177, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 109, 108, 68, 42, 1, 1, 1, 1, 1] [2024-11-27 23:19:53,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:19:53,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 23:19:53,270 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:19:53,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash -693765461, now seen corresponding path program 14 times [2024-11-27 23:19:53,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:53,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47243830] [2024-11-27 23:19:53,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:19:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:53,659 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:19:53,659 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 169484 backedges. 8642 proven. 19696 refuted. 0 times theorem prover too weak. 141146 trivial. 0 not checked. [2024-11-27 23:20:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47243830] [2024-11-27 23:20:01,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47243830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736581629] [2024-11-27 23:20:01,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:01,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:01,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:01,535 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:01,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:20:02,927 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:02,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:02,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 3982 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 23:20:02,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 169484 backedges. 9861 proven. 20851 refuted. 0 times theorem prover too weak. 138772 trivial. 0 not checked. [2024-11-27 23:20:03,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 169484 backedges. 9861 proven. 21155 refuted. 0 times theorem prover too weak. 138468 trivial. 0 not checked. [2024-11-27 23:20:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736581629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:13,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 39] total 44 [2024-11-27 23:20:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274308844] [2024-11-27 23:20:13,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:13,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 23:20:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:13,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 23:20:13,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1594, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:20:13,929 INFO L87 Difference]: Start difference. First operand 221 states and 297 transitions. Second operand has 44 states, 44 states have (on average 5.590909090909091) internal successors, (246), 44 states have internal predecessors, (246), 37 states have call successors, (41), 1 states have call predecessors, (41), 19 states have return successors, (56), 21 states have call predecessors, (56), 37 states have call successors, (56) [2024-11-27 23:20:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:15,201 INFO L93 Difference]: Finished difference Result 500 states and 739 transitions. [2024-11-27 23:20:15,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-27 23:20:15,202 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.590909090909091) internal successors, (246), 44 states have internal predecessors, (246), 37 states have call successors, (41), 1 states have call predecessors, (41), 19 states have return successors, (56), 21 states have call predecessors, (56), 37 states have call successors, (56) Word has length 2145 [2024-11-27 23:20:15,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:15,207 INFO L225 Difference]: With dead ends: 500 [2024-11-27 23:20:15,207 INFO L226 Difference]: Without dead ends: 285 [2024-11-27 23:20:15,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4369 GetRequests, 4267 SyntacticMatches, 19 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1676, Invalid=5464, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 23:20:15,212 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 888 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:15,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 297 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:20:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-27 23:20:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2024-11-27 23:20:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.0257731958762886) internal successors, (199), 190 states have internal predecessors, (199), 31 states have call successors, (31), 23 states have call predecessors, (31), 13 states have return successors, (95), 25 states have call predecessors, (95), 30 states have call successors, (95) [2024-11-27 23:20:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 325 transitions. [2024-11-27 23:20:15,245 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 325 transitions. Word has length 2145 [2024-11-27 23:20:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:15,246 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 325 transitions. [2024-11-27 23:20:15,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.590909090909091) internal successors, (246), 44 states have internal predecessors, (246), 37 states have call successors, (41), 1 states have call predecessors, (41), 19 states have return successors, (56), 21 states have call predecessors, (56), 37 states have call successors, (56) [2024-11-27 23:20:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 325 transitions. [2024-11-27 23:20:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2152 [2024-11-27 23:20:15,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:15,282 INFO L218 NwaCegarLoop]: trace histogram [220, 218, 178, 110, 110, 110, 110, 109, 109, 109, 109, 109, 109, 109, 109, 108, 68, 42, 1, 1, 1, 1, 1] [2024-11-27 23:20:15,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:20:15,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:15,483 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:20:15,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash -278088063, now seen corresponding path program 15 times [2024-11-27 23:20:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:15,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925792665] [2024-11-27 23:20:15,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:15,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2024-11-27 23:20:15,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 9792 proven. 14954 refuted. 0 times theorem prover too weak. 145680 trivial. 0 not checked. [2024-11-27 23:20:18,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925792665] [2024-11-27 23:20:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925792665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857799105] [2024-11-27 23:20:18,371 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:18,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:18,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:18,373 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:18,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:20:19,813 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2024-11-27 23:20:19,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:19,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 23:20:19,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 10035 proven. 14987 refuted. 0 times theorem prover too weak. 145404 trivial. 0 not checked. [2024-11-27 23:20:20,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 10039 proven. 15181 refuted. 0 times theorem prover too weak. 145206 trivial. 0 not checked. [2024-11-27 23:20:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857799105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:30,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:30,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 32] total 54 [2024-11-27 23:20:30,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458703069] [2024-11-27 23:20:30,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:30,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-27 23:20:30,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:30,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-27 23:20:30,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=2364, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 23:20:30,660 INFO L87 Difference]: Start difference. First operand 239 states and 325 transitions. Second operand has 54 states, 54 states have (on average 5.611111111111111) internal successors, (303), 54 states have internal predecessors, (303), 38 states have call successors, (48), 1 states have call predecessors, (48), 29 states have return successors, (69), 36 states have call predecessors, (69), 38 states have call successors, (69) [2024-11-27 23:20:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:32,073 INFO L93 Difference]: Finished difference Result 504 states and 721 transitions. [2024-11-27 23:20:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-27 23:20:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.611111111111111) internal successors, (303), 54 states have internal predecessors, (303), 38 states have call successors, (48), 1 states have call predecessors, (48), 29 states have return successors, (69), 36 states have call predecessors, (69), 38 states have call successors, (69) Word has length 2151 [2024-11-27 23:20:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:32,079 INFO L225 Difference]: With dead ends: 504 [2024-11-27 23:20:32,080 INFO L226 Difference]: Without dead ends: 271 [2024-11-27 23:20:32,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4370 GetRequests, 4267 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1947, Invalid=6063, Unknown=0, NotChecked=0, Total=8010 [2024-11-27 23:20:32,085 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 578 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:32,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 411 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:20:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-27 23:20:32,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 197. [2024-11-27 23:20:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 159 states have (on average 1.0188679245283019) internal successors, (162), 157 states have internal predecessors, (162), 26 states have call successors, (26), 19 states have call predecessors, (26), 11 states have return successors, (70), 20 states have call predecessors, (70), 25 states have call successors, (70) [2024-11-27 23:20:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 258 transitions. [2024-11-27 23:20:32,119 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 258 transitions. Word has length 2151 [2024-11-27 23:20:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:32,121 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 258 transitions. [2024-11-27 23:20:32,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.611111111111111) internal successors, (303), 54 states have internal predecessors, (303), 38 states have call successors, (48), 1 states have call predecessors, (48), 29 states have return successors, (69), 36 states have call predecessors, (69), 38 states have call successors, (69) [2024-11-27 23:20:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 258 transitions. [2024-11-27 23:20:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4584 [2024-11-27 23:20:32,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:32,245 INFO L218 NwaCegarLoop]: trace histogram [470, 463, 381, 237, 237, 237, 237, 232, 232, 232, 232, 232, 231, 231, 231, 230, 144, 89, 1, 1, 1, 1, 1] [2024-11-27 23:20:32,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:20:32,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 23:20:32,446 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:20:32,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 86974984, now seen corresponding path program 16 times [2024-11-27 23:20:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082899406] [2024-11-27 23:20:32,448 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:33,167 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:33,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 777503 backedges. 13618 proven. 48282 refuted. 0 times theorem prover too weak. 715603 trivial. 0 not checked. [2024-11-27 23:20:49,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:49,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082899406] [2024-11-27 23:20:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082899406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:49,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94589590] [2024-11-27 23:20:49,339 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:49,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:49,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:49,341 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:49,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:20:51,291 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:51,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:51,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 5672 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 23:20:51,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 777503 backedges. 294198 proven. 36758 refuted. 0 times theorem prover too weak. 446547 trivial. 0 not checked. [2024-11-27 23:20:51,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 777503 backedges. 16316 proven. 53547 refuted. 0 times theorem prover too weak. 707640 trivial. 0 not checked. [2024-11-27 23:21:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94589590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:07,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 38] total 43 [2024-11-27 23:21:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452763726] [2024-11-27 23:21:07,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:07,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 23:21:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:07,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 23:21:07,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1547, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:21:07,382 INFO L87 Difference]: Start difference. First operand 197 states and 258 transitions. Second operand has 43 states, 43 states have (on average 5.930232558139535) internal successors, (255), 43 states have internal predecessors, (255), 38 states have call successors, (45), 7 states have call predecessors, (45), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-27 23:21:08,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:08,840 INFO L93 Difference]: Finished difference Result 496 states and 702 transitions. [2024-11-27 23:21:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-27 23:21:08,841 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.930232558139535) internal successors, (255), 43 states have internal predecessors, (255), 38 states have call successors, (45), 7 states have call predecessors, (45), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) Word has length 4583 [2024-11-27 23:21:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:08,847 INFO L225 Difference]: With dead ends: 496 [2024-11-27 23:21:08,847 INFO L226 Difference]: Without dead ends: 305 [2024-11-27 23:21:08,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9263 GetRequests, 9140 SyntacticMatches, 26 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2400, Invalid=7302, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 23:21:08,851 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 1061 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:08,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 239 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:21:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-27 23:21:08,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 209. [2024-11-27 23:21:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 168 states have (on average 1.0178571428571428) internal successors, (171), 167 states have internal predecessors, (171), 28 states have call successors, (28), 20 states have call predecessors, (28), 12 states have return successors, (81), 21 states have call predecessors, (81), 27 states have call successors, (81) [2024-11-27 23:21:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2024-11-27 23:21:08,884 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 4583 [2024-11-27 23:21:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:08,886 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2024-11-27 23:21:08,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.930232558139535) internal successors, (255), 43 states have internal predecessors, (255), 38 states have call successors, (45), 7 states have call predecessors, (45), 17 states have return successors, (52), 19 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-27 23:21:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2024-11-27 23:21:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2813 [2024-11-27 23:21:08,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:08,947 INFO L218 NwaCegarLoop]: trace histogram [287, 286, 232, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 143, 142, 89, 55, 1, 1, 1, 1, 1] [2024-11-27 23:21:08,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:21:09,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:21:09,148 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:21:09,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash -420205961, now seen corresponding path program 17 times [2024-11-27 23:21:09,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:09,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095494541] [2024-11-27 23:21:09,149 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:21:09,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:10,312 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 208 check-sat command(s) [2024-11-27 23:21:10,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 291918 backedges. 56526 proven. 67897 refuted. 0 times theorem prover too weak. 167495 trivial. 0 not checked. [2024-11-27 23:28:09,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095494541] [2024-11-27 23:28:09,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095494541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493632619] [2024-11-27 23:28:09,097 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:28:09,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:09,104 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:09,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3efaed-5f68-439a-96f4-e0f40bf71f0d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:28:13,078 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 208 check-sat command(s) [2024-11-27 23:28:13,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:13,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 5214 conjuncts, 573 conjuncts are in the unsatisfiable core [2024-11-27 23:28:13,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 291918 backedges. 49486 proven. 53639 refuted. 0 times theorem prover too weak. 188793 trivial. 0 not checked. [2024-11-27 23:28:16,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:49,403 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 491 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 23:28:54,500 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 491 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)