./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci05-overflow.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_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/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_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci05-overflow.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/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_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/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 7348520f04d4d9b10e62396a3389d8f9a2f3fbd69eb8f1a8953214a9bb54eb76 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:49:52,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:49:52,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:49:52,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:49:52,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:49:52,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:49:52,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:49:52,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:49:52,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:49:52,595 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:49:52,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:49:52,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:49:52,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:49:52,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:49:52,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:49:52,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:49:52,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:49:52,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:49:52,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:49:52,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:49:52,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:49:52,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:49:52,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:49:52,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:49:52,600 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:49:52,600 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:49:52,600 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:49:52,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:49:52,600 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:49:52,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:49:52,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:49:52,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:52,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:52,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:52,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:52,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:49:52,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:52,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:52,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:52,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:52,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:49:52,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:49:52,603 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:49:52,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:49:52,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:49:52,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:49:52,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:49:52,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:49:52,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:49:52,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:49:52,604 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_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/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 -> 7348520f04d4d9b10e62396a3389d8f9a2f3fbd69eb8f1a8953214a9bb54eb76 [2024-11-28 02:49:52,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:49:52,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:49:52,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:49:52,981 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:49:52,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:49:52,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive/Fibonacci05-overflow.c [2024-11-28 02:49:56,176 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/data/7604aa1f1/09f6bd81a1704b0c8147b866b389acd0/FLAG59e4e2ab3 [2024-11-28 02:49:56,431 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:49:56,432 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/sv-benchmarks/c/recursive/Fibonacci05-overflow.c [2024-11-28 02:49:56,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/data/7604aa1f1/09f6bd81a1704b0c8147b866b389acd0/FLAG59e4e2ab3 [2024-11-28 02:49:56,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/data/7604aa1f1/09f6bd81a1704b0c8147b866b389acd0 [2024-11-28 02:49:56,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:49:56,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:49:56,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:56,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:49:56,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:49:56,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190002dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56, skipping insertion in model container [2024-11-28 02:49:56,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:49:56,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:56,725 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:49:56,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:56,765 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:49:56,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56 WrapperNode [2024-11-28 02:49:56,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:56,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:56,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:49:56,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:49:56,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,804 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2024-11-28 02:49:56,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:56,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:49:56,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:49:56,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:49:56,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,838 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:49:56,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:49:56,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:49:56,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:49:56,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:49:56,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (1/1) ... [2024-11-28 02:49:56,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:56,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:49:56,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:49:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-28 02:49:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-28 02:49:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:49:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:49:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:49:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:49:57,010 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:49:57,012 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:49:57,180 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 02:49:57,181 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:49:57,193 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:49:57,193 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:49:57,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:57 BoogieIcfgContainer [2024-11-28 02:49:57,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:49:57,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:49:57,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:49:57,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:49:57,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:49:56" (1/3) ... [2024-11-28 02:49:57,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@930bf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:57, skipping insertion in model container [2024-11-28 02:49:57,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:56" (2/3) ... [2024-11-28 02:49:57,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@930bf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:57, skipping insertion in model container [2024-11-28 02:49:57,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:57" (3/3) ... [2024-11-28 02:49:57,207 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci05-overflow.c [2024-11-28 02:49:57,227 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:49:57,229 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci05-overflow.c that has 2 procedures, 31 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-11-28 02:49:57,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:49:57,306 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;@64fe8fd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:49:57,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:49:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:49:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:49:57,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:57,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:57,319 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:49:57,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2024-11-28 02:49:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:57,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807146844] [2024-11-28 02:49:57,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:57,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:57,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807146844] [2024-11-28 02:49:57,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807146844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:57,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:57,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:49:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972671562] [2024-11-28 02:49:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:57,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:49:57,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:57,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:49:57,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:49:57,570 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 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 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:57,659 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-28 02:49:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:49:57,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2024-11-28 02:49:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:57,670 INFO L225 Difference]: With dead ends: 36 [2024-11-28 02:49:57,670 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 02:49:57,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:49:57,679 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:57,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:49:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 02:49:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-28 02:49:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:49:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 02:49:57,738 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-28 02:49:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:57,739 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 02:49:57,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 02:49:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:49:57,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:57,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:57,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:49:57,741 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:49:57,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2024-11-28 02:49:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764697326] [2024-11-28 02:49:57,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764697326] [2024-11-28 02:49:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764697326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:57,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:57,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:49:57,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468175159] [2024-11-28 02:49:57,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:57,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:49:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:57,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:49:57,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:49:57,873 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:57,994 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-28 02:49:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:49:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 02:49:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:57,996 INFO L225 Difference]: With dead ends: 24 [2024-11-28 02:49:57,996 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 02:49:57,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:57,997 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:57,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:49:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 02:49:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-28 02:49:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:49:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-28 02:49:58,015 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-28 02:49:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:58,015 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-28 02:49:58,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-28 02:49:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 02:49:58,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:58,017 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:58,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:49:58,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:49:58,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2024-11-28 02:49:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990764516] [2024-11-28 02:49:58,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:49:58,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:58,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990764516] [2024-11-28 02:49:58,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990764516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:58,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:58,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:49:58,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804696588] [2024-11-28 02:49:58,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:58,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:49:58,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:58,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:49:58,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:49:58,329 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:49:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:58,416 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-28 02:49:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:49:58,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 29 [2024-11-28 02:49:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:58,421 INFO L225 Difference]: With dead ends: 34 [2024-11-28 02:49:58,421 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 02:49:58,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:49:58,423 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:58,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:49:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 02:49:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-28 02:49:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:49:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-28 02:49:58,444 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2024-11-28 02:49:58,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:58,445 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-28 02:49:58,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:49:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-28 02:49:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:49:58,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:58,448 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:58,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:49:58,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:49:58,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1274820555, now seen corresponding path program 1 times [2024-11-28 02:49:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:58,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413468885] [2024-11-28 02:49:58,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:49:58,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413468885] [2024-11-28 02:49:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413468885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410110745] [2024-11-28 02:49:58,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:58,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:58,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:58,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:58,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:49:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:58,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:49:58,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:49:59,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:49:59,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410110745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:59,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:59,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-28 02:49:59,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431523870] [2024-11-28 02:49:59,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:59,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:49:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:59,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:49:59,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:49:59,286 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:49:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:59,683 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2024-11-28 02:49:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:49:59,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 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 24 [2024-11-28 02:49:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:59,685 INFO L225 Difference]: With dead ends: 90 [2024-11-28 02:49:59,686 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 02:49:59,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:49:59,690 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:59,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 94 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:49:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 02:49:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2024-11-28 02:49:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 02:49:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-11-28 02:49:59,719 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2024-11-28 02:49:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:59,719 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-11-28 02:49:59,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:49:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-11-28 02:49:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:49:59,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:59,725 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:59,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:49:59,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:59,929 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:49:59,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash -254150789, now seen corresponding path program 2 times [2024-11-28 02:49:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561242836] [2024-11-28 02:49:59,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:59,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:49:59,951 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:50:00,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561242836] [2024-11-28 02:50:00,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561242836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:00,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940077116] [2024-11-28 02:50:00,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:00,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:00,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:50:00,209 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:00,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:00,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:50:00,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:50:00,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:50:00,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940077116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:00,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:50:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 02:50:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302805170] [2024-11-28 02:50:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:00,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:50:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:00,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:50:00,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:50:00,292 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:50:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:00,346 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-28 02:50:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:50:00,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 24 [2024-11-28 02:50:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:00,349 INFO L225 Difference]: With dead ends: 59 [2024-11-28 02:50:00,352 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 02:50:00,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:50:00,354 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:00,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:50:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 02:50:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-28 02:50:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 02:50:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-11-28 02:50:00,381 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2024-11-28 02:50:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:00,382 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-11-28 02:50:00,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:50:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-11-28 02:50:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 02:50:00,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:00,384 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:00,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:50:00,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:00,585 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:00,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1092136320, now seen corresponding path program 1 times [2024-11-28 02:50:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990407231] [2024-11-28 02:50:00,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:00,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:50:00,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990407231] [2024-11-28 02:50:00,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990407231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725612093] [2024-11-28 02:50:00,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:00,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:00,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:00,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:00,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:50:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:00,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:50:00,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:50:00,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:50:00,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725612093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:00,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:50:00,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 02:50:00,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884261129] [2024-11-28 02:50:00,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:00,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:50:00,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:00,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:50:00,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:50:00,864 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:50:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:00,933 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2024-11-28 02:50:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:50:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 02:50:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:00,938 INFO L225 Difference]: With dead ends: 81 [2024-11-28 02:50:00,942 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 02:50:00,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:50:00,944 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:00,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:50:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 02:50:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2024-11-28 02:50:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2024-11-28 02:50:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-11-28 02:50:00,986 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2024-11-28 02:50:00,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:00,986 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-11-28 02:50:00,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:50:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-11-28 02:50:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 02:50:00,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:00,988 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:01,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:50:01,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:50:01,193 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:01,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash -940023341, now seen corresponding path program 1 times [2024-11-28 02:50:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534063704] [2024-11-28 02:50:01,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 02:50:01,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534063704] [2024-11-28 02:50:01,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534063704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793632056] [2024-11-28 02:50:01,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:01,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:01,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:01,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:01,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:50:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:01,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:50:01,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 02:50:01,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 02:50:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793632056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:02,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:02,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-28 02:50:02,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572378750] [2024-11-28 02:50:02,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:02,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:50:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:02,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:50:02,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:50:02,076 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:50:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:02,422 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2024-11-28 02:50:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:50:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 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 51 [2024-11-28 02:50:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:02,433 INFO L225 Difference]: With dead ends: 140 [2024-11-28 02:50:02,433 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 02:50:02,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:50:02,435 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:02,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 185 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 02:50:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2024-11-28 02:50:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.08) internal successors, (81), 74 states have internal predecessors, (81), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2024-11-28 02:50:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2024-11-28 02:50:02,491 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 51 [2024-11-28 02:50:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:02,492 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2024-11-28 02:50:02,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:50:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2024-11-28 02:50:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:50:02,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:02,499 INFO L218 NwaCegarLoop]: trace histogram [11, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2024-11-28 02:50:02,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:50:02,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:02,704 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:02,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash -464842746, now seen corresponding path program 1 times [2024-11-28 02:50:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088252832] [2024-11-28 02:50:02,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 40 proven. 109 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-28 02:50:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:02,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088252832] [2024-11-28 02:50:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088252832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881635651] [2024-11-28 02:50:02,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:02,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:02,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:02,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:50:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:03,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:50:03,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 167 proven. 67 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:50:03,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 49 proven. 137 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-28 02:50:03,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881635651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:03,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:03,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 13 [2024-11-28 02:50:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17181127] [2024-11-28 02:50:03,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:03,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:50:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:03,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:50:03,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:50:03,647 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 02:50:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:03,873 INFO L93 Difference]: Finished difference Result 223 states and 400 transitions. [2024-11-28 02:50:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:50:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 96 [2024-11-28 02:50:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:03,876 INFO L225 Difference]: With dead ends: 223 [2024-11-28 02:50:03,876 INFO L226 Difference]: Without dead ends: 129 [2024-11-28 02:50:03,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 186 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:50:03,879 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:03,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 74 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-28 02:50:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 109. [2024-11-28 02:50:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 85 states have (on average 1.0823529411764705) internal successors, (92), 83 states have internal predecessors, (92), 12 states have call successors, (12), 3 states have call predecessors, (12), 10 states have return successors, (75), 22 states have call predecessors, (75), 11 states have call successors, (75) [2024-11-28 02:50:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 179 transitions. [2024-11-28 02:50:03,909 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 179 transitions. Word has length 96 [2024-11-28 02:50:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:03,910 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 179 transitions. [2024-11-28 02:50:03,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 8 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 02:50:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 179 transitions. [2024-11-28 02:50:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 02:50:03,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:03,919 INFO L218 NwaCegarLoop]: trace histogram [12, 10, 8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1] [2024-11-28 02:50:03,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:50:04,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:04,119 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:04,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1900793908, now seen corresponding path program 2 times [2024-11-28 02:50:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343554404] [2024-11-28 02:50:04,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:04,150 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:04,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 30 proven. 89 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-28 02:50:04,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:04,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343554404] [2024-11-28 02:50:04,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343554404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:04,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736957131] [2024-11-28 02:50:04,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:04,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:04,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:50:04,365 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:04,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:04,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:50:04,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-28 02:50:04,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 4 proven. 90 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-28 02:50:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736957131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:05,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-28 02:50:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028986034] [2024-11-28 02:50:05,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:05,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:50:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:05,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:50:05,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:50:05,152 INFO L87 Difference]: Start difference. First operand 109 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:50:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:05,348 INFO L93 Difference]: Finished difference Result 172 states and 292 transitions. [2024-11-28 02:50:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:50:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 107 [2024-11-28 02:50:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:05,352 INFO L225 Difference]: With dead ends: 172 [2024-11-28 02:50:05,353 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 02:50:05,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:50:05,357 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:05,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 49 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 02:50:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2024-11-28 02:50:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (26), 10 states have call predecessors, (26), 6 states have call successors, (26) [2024-11-28 02:50:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2024-11-28 02:50:05,379 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 107 [2024-11-28 02:50:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:05,379 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2024-11-28 02:50:05,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:50:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2024-11-28 02:50:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:50:05,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:05,381 INFO L218 NwaCegarLoop]: trace histogram [19, 17, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 5, 5, 1, 1, 1, 1] [2024-11-28 02:50:05,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:05,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:05,582 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:05,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2012053566, now seen corresponding path program 2 times [2024-11-28 02:50:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:05,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187872665] [2024-11-28 02:50:05,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:05,618 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:05,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 100 proven. 280 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-11-28 02:50:05,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:05,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187872665] [2024-11-28 02:50:05,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187872665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:05,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981902546] [2024-11-28 02:50:05,894 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:05,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:05,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:05,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:05,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:50:06,014 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:06,014 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:06,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:50:06,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 454 proven. 15 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2024-11-28 02:50:06,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 101 proven. 331 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-11-28 02:50:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981902546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:06,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:06,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-28 02:50:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64516987] [2024-11-28 02:50:06,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:06,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:50:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:06,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:50:06,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:50:06,643 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 02:50:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:06,815 INFO L93 Difference]: Finished difference Result 114 states and 162 transitions. [2024-11-28 02:50:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:50:06,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 176 [2024-11-28 02:50:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:06,819 INFO L225 Difference]: With dead ends: 114 [2024-11-28 02:50:06,819 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 02:50:06,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:50:06,821 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:06,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 73 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 02:50:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-28 02:50:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 02:50:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-28 02:50:06,840 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 176 [2024-11-28 02:50:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:06,841 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-28 02:50:06,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 02:50:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-28 02:50:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:50:06,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:06,846 INFO L218 NwaCegarLoop]: trace histogram [19, 17, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 3, 1, 1, 1, 1] [2024-11-28 02:50:06,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:50:07,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:07,047 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:07,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash -31735154, now seen corresponding path program 3 times [2024-11-28 02:50:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:07,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775880569] [2024-11-28 02:50:07,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:07,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:07,073 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 02:50:07,074 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 325 proven. 18 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-28 02:50:07,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775880569] [2024-11-28 02:50:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775880569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896630307] [2024-11-28 02:50:07,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:07,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:07,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:07,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:07,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:50:07,294 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 02:50:07,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:07,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:50:07,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 322 proven. 21 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-28 02:50:07,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 322 proven. 22 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-28 02:50:07,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896630307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:07,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:07,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2024-11-28 02:50:07,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834637587] [2024-11-28 02:50:07,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:07,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:50:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:07,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:50:07,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:50:07,902 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:50:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:08,041 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2024-11-28 02:50:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:50:08,042 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 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 178 [2024-11-28 02:50:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:08,043 INFO L225 Difference]: With dead ends: 107 [2024-11-28 02:50:08,044 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 02:50:08,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 350 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:50:08,045 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 58 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:08,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 75 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 02:50:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-28 02:50:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 02:50:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-28 02:50:08,054 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 178 [2024-11-28 02:50:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:08,055 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-28 02:50:08,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 02:50:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-28 02:50:08,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 02:50:08,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:08,056 INFO L218 NwaCegarLoop]: trace histogram [12, 10, 10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1] [2024-11-28 02:50:08,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:50:08,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:08,261 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:08,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash -849870508, now seen corresponding path program 4 times [2024-11-28 02:50:08,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:08,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056062189] [2024-11-28 02:50:08,262 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:50:08,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:08,277 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:50:08,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 94 proven. 159 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-28 02:50:08,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:08,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056062189] [2024-11-28 02:50:08,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056062189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:08,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078141] [2024-11-28 02:50:08,506 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:50:08,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:08,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:08,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:08,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:50:08,580 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:50:08,580 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:08,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:50:08,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 106 proven. 158 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-28 02:50:08,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 106 proven. 174 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-28 02:50:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:09,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:09,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-28 02:50:09,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748265880] [2024-11-28 02:50:09,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:09,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:50:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:09,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:50:09,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:50:09,644 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 02:50:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:10,017 INFO L93 Difference]: Finished difference Result 120 states and 146 transitions. [2024-11-28 02:50:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:50:10,018 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 110 [2024-11-28 02:50:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:10,019 INFO L225 Difference]: With dead ends: 120 [2024-11-28 02:50:10,019 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 02:50:10,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 212 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:50:10,021 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 134 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:10,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 85 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 02:50:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2024-11-28 02:50:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-28 02:50:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-11-28 02:50:10,038 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 110 [2024-11-28 02:50:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:10,040 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-11-28 02:50:10,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 02:50:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-11-28 02:50:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-28 02:50:10,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:10,044 INFO L218 NwaCegarLoop]: trace histogram [26, 23, 21, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 10, 8, 5, 1, 1, 1, 1] [2024-11-28 02:50:10,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:50:10,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:50:10,248 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:10,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:10,249 INFO L85 PathProgramCache]: Analyzing trace with hash -692151828, now seen corresponding path program 5 times [2024-11-28 02:50:10,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:10,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62001223] [2024-11-28 02:50:10,249 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:50:10,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:10,277 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 02:50:10,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 334 proven. 596 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2024-11-28 02:50:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62001223] [2024-11-28 02:50:10,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62001223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:10,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027189766] [2024-11-28 02:50:10,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:50:10,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:10,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:10,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:10,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:50:10,736 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 02:50:10,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:10,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:50:10,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 972 proven. 384 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-11-28 02:50:10,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2029 backedges. 333 proven. 606 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2024-11-28 02:50:11,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027189766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:11,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 21 [2024-11-28 02:50:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619014464] [2024-11-28 02:50:11,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:11,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:50:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:11,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:50:11,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:50:11,856 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 12 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-28 02:50:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:12,223 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2024-11-28 02:50:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:50:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 12 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) Word has length 242 [2024-11-28 02:50:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:12,225 INFO L225 Difference]: With dead ends: 142 [2024-11-28 02:50:12,225 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 02:50:12,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 474 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:50:12,227 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 217 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:12,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 87 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 02:50:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2024-11-28 02:50:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (17), 9 states have call predecessors, (17), 8 states have call successors, (17) [2024-11-28 02:50:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-28 02:50:12,239 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 242 [2024-11-28 02:50:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:12,239 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-28 02:50:12,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.285714285714286) internal successors, (111), 21 states have internal predecessors, (111), 12 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-28 02:50:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-28 02:50:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 02:50:12,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:12,241 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] [2024-11-28 02:50:12,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:12,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:50:12,446 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:12,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1403863811, now seen corresponding path program 6 times [2024-11-28 02:50:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:12,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401604513] [2024-11-28 02:50:12,447 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:50:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:12,477 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 02:50:12,477 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 183 proven. 132 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-28 02:50:12,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401604513] [2024-11-28 02:50:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401604513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411088934] [2024-11-28 02:50:12,730 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:50:12,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:12,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:12,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:12,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:50:12,836 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 02:50:12,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:12,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:50:12,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 61 proven. 95 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-28 02:50:13,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 103 proven. 95 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-11-28 02:50:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411088934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:14,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2024-11-28 02:50:14,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971123840] [2024-11-28 02:50:14,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:14,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:50:14,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:14,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:50:14,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:50:14,761 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-28 02:50:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:15,739 INFO L93 Difference]: Finished difference Result 196 states and 262 transitions. [2024-11-28 02:50:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 02:50:15,740 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) Word has length 129 [2024-11-28 02:50:15,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:15,742 INFO L225 Difference]: With dead ends: 196 [2024-11-28 02:50:15,742 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 02:50:15,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=501, Invalid=2469, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:50:15,745 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 149 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:15,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 118 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:50:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 02:50:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2024-11-28 02:50:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-28 02:50:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2024-11-28 02:50:15,759 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 129 [2024-11-28 02:50:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:15,759 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2024-11-28 02:50:15,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4545454545454546) internal successors, (114), 33 states have internal predecessors, (114), 11 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 23 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-28 02:50:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2024-11-28 02:50:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-11-28 02:50:15,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:15,768 INFO L218 NwaCegarLoop]: trace histogram [47, 45, 38, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 21, 15, 9, 1, 1, 1, 1] [2024-11-28 02:50:15,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:50:15,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:50:15,969 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:15,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1924062468, now seen corresponding path program 7 times [2024-11-28 02:50:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530791389] [2024-11-28 02:50:15,970 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:50:15,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 558 proven. 2001 refuted. 0 times theorem prover too weak. 4750 trivial. 0 not checked. [2024-11-28 02:50:17,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530791389] [2024-11-28 02:50:17,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530791389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007234389] [2024-11-28 02:50:17,075 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:50:17,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:17,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:17,078 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:17,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:50:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:17,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 02:50:17,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 3859 proven. 1245 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2024-11-28 02:50:17,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7309 backedges. 658 proven. 2493 refuted. 0 times theorem prover too weak. 4158 trivial. 0 not checked. [2024-11-28 02:50:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007234389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:19,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:19,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 22] total 27 [2024-11-28 02:50:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353080378] [2024-11-28 02:50:19,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:19,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:50:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:19,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:50:19,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:50:19,716 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-28 02:50:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:20,372 INFO L93 Difference]: Finished difference Result 232 states and 309 transitions. [2024-11-28 02:50:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:50:20,373 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) Word has length 452 [2024-11-28 02:50:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:20,376 INFO L225 Difference]: With dead ends: 232 [2024-11-28 02:50:20,376 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 02:50:20,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 889 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 02:50:20,378 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 306 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:20,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 118 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:50:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 02:50:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 118. [2024-11-28 02:50:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.063157894736842) internal successors, (101), 92 states have internal predecessors, (101), 14 states have call successors, (14), 10 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-28 02:50:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2024-11-28 02:50:20,407 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 452 [2024-11-28 02:50:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:20,408 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2024-11-28 02:50:20,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.0) internal successors, (162), 27 states have internal predecessors, (162), 22 states have call successors, (29), 3 states have call predecessors, (29), 11 states have return successors, (34), 13 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-28 02:50:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2024-11-28 02:50:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-28 02:50:20,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:20,413 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 22, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 9, 5, 1, 1, 1, 1] [2024-11-28 02:50:20,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:20,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:50:20,617 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:20,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash 776162863, now seen corresponding path program 8 times [2024-11-28 02:50:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586746751] [2024-11-28 02:50:20,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:20,660 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:20,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 571 proven. 345 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2024-11-28 02:50:21,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:21,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586746751] [2024-11-28 02:50:21,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586746751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:21,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641324553] [2024-11-28 02:50:21,072 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:21,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:21,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:21,074 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:21,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:50:21,230 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:21,230 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:21,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:50:21,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 1197 proven. 484 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2024-11-28 02:50:21,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 511 proven. 831 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2024-11-28 02:50:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641324553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:23,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 25 [2024-11-28 02:50:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061233594] [2024-11-28 02:50:23,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:23,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:50:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:23,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:50:23,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:50:23,274 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 18 states have call successors, (25), 2 states have call predecessors, (25), 10 states have return successors, (32), 12 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-28 02:50:23,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:23,651 INFO L93 Difference]: Finished difference Result 231 states and 299 transitions. [2024-11-28 02:50:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:50:23,652 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 18 states have call successors, (25), 2 states have call predecessors, (25), 10 states have return successors, (32), 12 states have call predecessors, (32), 18 states have call successors, (32) Word has length 261 [2024-11-28 02:50:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:23,654 INFO L225 Difference]: With dead ends: 231 [2024-11-28 02:50:23,654 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 02:50:23,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 504 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:50:23,656 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:23,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 185 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:50:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 02:50:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-28 02:50:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-28 02:50:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2024-11-28 02:50:23,666 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 261 [2024-11-28 02:50:23,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:23,667 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2024-11-28 02:50:23,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 18 states have call successors, (25), 2 states have call predecessors, (25), 10 states have return successors, (32), 12 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-28 02:50:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2024-11-28 02:50:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-28 02:50:23,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:23,674 INFO L218 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2024-11-28 02:50:23,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:50:23,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:50:23,878 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:23,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash -247046770, now seen corresponding path program 9 times [2024-11-28 02:50:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486912020] [2024-11-28 02:50:23,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:23,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-11-28 02:50:23,974 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 850 proven. 1485 refuted. 0 times theorem prover too weak. 3293 trivial. 0 not checked. [2024-11-28 02:50:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486912020] [2024-11-28 02:50:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486912020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392653428] [2024-11-28 02:50:28,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:28,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:28,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:28,093 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:28,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:50:28,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-11-28 02:50:28,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:28,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 02:50:28,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2024-11-28 02:50:28,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2024-11-28 02:50:37,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392653428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:37,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 29] total 46 [2024-11-28 02:50:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153037100] [2024-11-28 02:50:37,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 02:50:37,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:37,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 02:50:37,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 02:50:37,990 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 47 states, 46 states have (on average 2.630434782608696) internal successors, (121), 47 states have internal predecessors, (121), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 02:50:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:38,489 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2024-11-28 02:50:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 02:50:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.630434782608696) internal successors, (121), 47 states have internal predecessors, (121), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 398 [2024-11-28 02:50:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:38,493 INFO L225 Difference]: With dead ends: 170 [2024-11-28 02:50:38,494 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 02:50:38,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 779 SyntacticMatches, 51 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2754 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=694, Invalid=2386, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:50:38,496 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:38,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 200 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 02:50:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 142. [2024-11-28 02:50:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 111 states have internal predecessors, (116), 17 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (70), 20 states have call predecessors, (70), 16 states have call successors, (70) [2024-11-28 02:50:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2024-11-28 02:50:38,517 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 398 [2024-11-28 02:50:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:38,518 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2024-11-28 02:50:38,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.630434782608696) internal successors, (121), 47 states have internal predecessors, (121), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 02:50:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2024-11-28 02:50:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2024-11-28 02:50:38,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:38,528 INFO L218 NwaCegarLoop]: trace histogram [104, 102, 84, 52, 52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 51, 50, 32, 20, 1, 1, 1, 1] [2024-11-28 02:50:38,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:38,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:50:38,729 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:38,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash -936640076, now seen corresponding path program 10 times [2024-11-28 02:50:38,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:38,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285894240] [2024-11-28 02:50:38,730 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:50:38,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:38,847 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:50:38,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 37403 backedges. 1527 proven. 6552 refuted. 0 times theorem prover too weak. 29324 trivial. 0 not checked. [2024-11-28 02:50:40,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285894240] [2024-11-28 02:50:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285894240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562409932] [2024-11-28 02:50:40,241 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:50:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:40,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:40,243 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:40,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:50:40,685 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:50:40,685 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:40,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:50:40,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 37403 backedges. 1795 proven. 7738 refuted. 0 times theorem prover too weak. 27870 trivial. 0 not checked. [2024-11-28 02:50:41,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 37403 backedges. 1795 proven. 7853 refuted. 0 times theorem prover too weak. 27755 trivial. 0 not checked. [2024-11-28 02:50:45,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562409932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:45,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:45,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-28 02:50:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691771762] [2024-11-28 02:50:45,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:45,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:50:45,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:45,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:50:45,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:50:45,810 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-28 02:50:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:46,743 INFO L93 Difference]: Finished difference Result 346 states and 571 transitions. [2024-11-28 02:50:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 02:50:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) Word has length 1012 [2024-11-28 02:50:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:46,748 INFO L225 Difference]: With dead ends: 346 [2024-11-28 02:50:46,749 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 02:50:46,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 2007 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 02:50:46,753 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 278 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:46,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 189 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:50:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 02:50:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2024-11-28 02:50:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.032258064516129) internal successors, (160), 151 states have internal predecessors, (160), 23 states have call successors, (23), 14 states have call predecessors, (23), 14 states have return successors, (90), 27 states have call predecessors, (90), 22 states have call successors, (90) [2024-11-28 02:50:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 273 transitions. [2024-11-28 02:50:46,782 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 273 transitions. Word has length 1012 [2024-11-28 02:50:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:46,783 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 273 transitions. [2024-11-28 02:50:46,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-28 02:50:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 273 transitions. [2024-11-28 02:50:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2024-11-28 02:50:46,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:46,793 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] [2024-11-28 02:50:46,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:50:46,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:50:46,997 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:46,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:46,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1460460577, now seen corresponding path program 11 times [2024-11-28 02:50:46,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:46,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135346368] [2024-11-28 02:50:46,998 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:50:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:47,204 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-28 02:50:47,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3443 proven. 3435 refuted. 0 times theorem prover too weak. 16981 trivial. 0 not checked. [2024-11-28 02:50:49,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:49,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135346368] [2024-11-28 02:50:49,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135346368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:49,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483064581] [2024-11-28 02:50:49,228 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:50:49,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:49,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:49,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:50:49,923 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-28 02:50:49,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:49,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:50:49,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3554 proven. 3539 refuted. 0 times theorem prover too weak. 16766 trivial. 0 not checked. [2024-11-28 02:50:50,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3562 proven. 3654 refuted. 0 times theorem prover too weak. 16643 trivial. 0 not checked. [2024-11-28 02:50:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483064581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:54,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:54,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 27] total 34 [2024-11-28 02:50:54,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29414985] [2024-11-28 02:50:54,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:54,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:50:54,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:54,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:50:54,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:50:54,288 INFO L87 Difference]: Start difference. First operand 193 states and 273 transitions. Second operand has 34 states, 34 states have (on average 5.323529411764706) internal successors, (181), 34 states have internal predecessors, (181), 25 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 18 states have call predecessors, (39), 25 states have call successors, (39) [2024-11-28 02:50:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:55,324 INFO L93 Difference]: Finished difference Result 438 states and 697 transitions. [2024-11-28 02:50:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 02:50:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.323529411764706) internal successors, (181), 34 states have internal predecessors, (181), 25 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 18 states have call predecessors, (39), 25 states have call successors, (39) Word has length 810 [2024-11-28 02:50:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:55,329 INFO L225 Difference]: With dead ends: 438 [2024-11-28 02:50:55,329 INFO L226 Difference]: Without dead ends: 225 [2024-11-28 02:50:55,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1685 GetRequests, 1604 SyntacticMatches, 13 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1211, Invalid=3619, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 02:50:55,333 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 268 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:55,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 207 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:50:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-28 02:50:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 184. [2024-11-28 02:50:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 149 states have (on average 1.0335570469798658) internal successors, (154), 145 states have internal predecessors, (154), 23 states have call successors, (23), 17 states have call predecessors, (23), 11 states have return successors, (64), 21 states have call predecessors, (64), 22 states have call successors, (64) [2024-11-28 02:50:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 241 transitions. [2024-11-28 02:50:55,354 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 241 transitions. Word has length 810 [2024-11-28 02:50:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:55,355 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 241 transitions. [2024-11-28 02:50:55,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.323529411764706) internal successors, (181), 34 states have internal predecessors, (181), 25 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 18 states have call predecessors, (39), 25 states have call successors, (39) [2024-11-28 02:50:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 241 transitions. [2024-11-28 02:50:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2024-11-28 02:50:55,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:55,361 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] [2024-11-28 02:50:55,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:50:55,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:55,562 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:55,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash -828342078, now seen corresponding path program 12 times [2024-11-28 02:50:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415405213] [2024-11-28 02:50:55,563 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:50:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:55,675 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2024-11-28 02:50:55,675 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3613 proven. 2676 refuted. 0 times theorem prover too weak. 17926 trivial. 0 not checked. [2024-11-28 02:50:56,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415405213] [2024-11-28 02:50:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415405213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748053302] [2024-11-28 02:50:56,843 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:50:56,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:56,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:56,846 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:50:57,441 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2024-11-28 02:50:57,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:57,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:50:57,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3739 proven. 2851 refuted. 0 times theorem prover too weak. 17625 trivial. 0 not checked. [2024-11-28 02:50:57,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24215 backedges. 3751 proven. 2945 refuted. 0 times theorem prover too weak. 17519 trivial. 0 not checked. [2024-11-28 02:51:01,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748053302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:01,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:01,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 25] total 32 [2024-11-28 02:51:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121358803] [2024-11-28 02:51:01,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:01,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:51:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:01,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:51:01,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:51:01,355 INFO L87 Difference]: Start difference. First operand 184 states and 241 transitions. Second operand has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 20 states have call successors, (28), 1 states have call predecessors, (28), 13 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-28 02:51:02,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:02,054 INFO L93 Difference]: Finished difference Result 463 states and 616 transitions. [2024-11-28 02:51:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:51:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 20 states have call successors, (28), 1 states have call predecessors, (28), 13 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) Word has length 816 [2024-11-28 02:51:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:02,061 INFO L225 Difference]: With dead ends: 463 [2024-11-28 02:51:02,061 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 02:51:02,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1678 GetRequests, 1614 SyntacticMatches, 12 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=721, Invalid=2141, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 02:51:02,066 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 167 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:02,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 247 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:51:02,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 02:51:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 174. [2024-11-28 02:51:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 138 states have internal predecessors, (145), 22 states have call successors, (22), 18 states have call predecessors, (22), 10 states have return successors, (49), 17 states have call predecessors, (49), 21 states have call successors, (49) [2024-11-28 02:51:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2024-11-28 02:51:02,105 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 816 [2024-11-28 02:51:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:02,106 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2024-11-28 02:51:02,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 20 states have call successors, (28), 1 states have call predecessors, (28), 13 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-28 02:51:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2024-11-28 02:51:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2001 [2024-11-28 02:51:02,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:02,147 INFO L218 NwaCegarLoop]: trace histogram [206, 201, 167, 104, 104, 104, 104, 101, 101, 101, 101, 101, 100, 100, 100, 99, 63, 39, 1, 1, 1, 1] [2024-11-28 02:51:02,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:51:02,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-28 02:51:02,352 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:51:02,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1228948273, now seen corresponding path program 13 times [2024-11-28 02:51:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419933355] [2024-11-28 02:51:02,354 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:51:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 147409 backedges. 4035 proven. 16380 refuted. 0 times theorem prover too weak. 126994 trivial. 0 not checked. [2024-11-28 02:51:10,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419933355] [2024-11-28 02:51:10,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419933355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:10,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107691166] [2024-11-28 02:51:10,909 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:51:10,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:10,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:10,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:51:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:11,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 3712 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:51:11,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 147409 backedges. 69887 proven. 10618 refuted. 0 times theorem prover too weak. 66904 trivial. 0 not checked. [2024-11-28 02:51:12,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 147409 backedges. 4895 proven. 18857 refuted. 0 times theorem prover too weak. 123657 trivial. 0 not checked. [2024-11-28 02:51:18,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107691166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:18,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:18,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 31] total 36 [2024-11-28 02:51:18,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108540300] [2024-11-28 02:51:18,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:18,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 02:51:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:18,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 02:51:18,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:51:18,151 INFO L87 Difference]: Start difference. First operand 174 states and 216 transitions. Second operand has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 31 states have call successors, (38), 6 states have call predecessors, (38), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 02:51:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:19,042 INFO L93 Difference]: Finished difference Result 409 states and 550 transitions. [2024-11-28 02:51:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 02:51:19,045 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 31 states have call successors, (38), 6 states have call predecessors, (38), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) Word has length 2000 [2024-11-28 02:51:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:19,050 INFO L225 Difference]: With dead ends: 409 [2024-11-28 02:51:19,050 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 02:51:19,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4069 GetRequests, 3978 SyntacticMatches, 21 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1309, Invalid=3803, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 02:51:19,054 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 614 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:19,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 165 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:51:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 02:51:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 210. [2024-11-28 02:51:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 168 states have internal predecessors, (174), 28 states have call successors, (28), 23 states have call predecessors, (28), 11 states have return successors, (61), 18 states have call predecessors, (61), 27 states have call successors, (61) [2024-11-28 02:51:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 263 transitions. [2024-11-28 02:51:19,084 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 263 transitions. Word has length 2000 [2024-11-28 02:51:19,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:19,085 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 263 transitions. [2024-11-28 02:51:19,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 31 states have call successors, (38), 6 states have call predecessors, (38), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 02:51:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 263 transitions. [2024-11-28 02:51:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2024-11-28 02:51:19,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:19,096 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] [2024-11-28 02:51:19,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:51:19,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:51:19,300 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:51:19,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash 219479183, now seen corresponding path program 14 times [2024-11-28 02:51:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:19,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230196761] [2024-11-28 02:51:19,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:51:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:19,446 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:51:19,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6794 proven. 10267 refuted. 0 times theorem prover too weak. 24873 trivial. 0 not checked. [2024-11-28 02:51:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230196761] [2024-11-28 02:51:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230196761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625936998] [2024-11-28 02:51:44,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:51:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:44,076 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:44,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:51:44,618 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:51:44,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:44,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-28 02:51:44,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2024-11-28 02:51:45,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2024-11-28 02:52:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625936998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:52:45,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:52:45,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 41] total 59 [2024-11-28 02:52:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400248551] [2024-11-28 02:52:45,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:52:45,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 02:52:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:45,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 02:52:45,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=2770, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 02:52:45,969 INFO L87 Difference]: Start difference. First operand 210 states and 263 transitions. Second operand has 60 states, 59 states have (on average 2.5762711864406778) internal successors, (152), 60 states have internal predecessors, (152), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (41), 41 states have call predecessors, (41), 16 states have call successors, (41) [2024-11-28 02:52:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:46,239 INFO L93 Difference]: Finished difference Result 241 states and 321 transitions. [2024-11-28 02:52:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:52:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.5762711864406778) internal successors, (152), 60 states have internal predecessors, (152), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (41), 41 states have call predecessors, (41), 16 states have call successors, (41) Word has length 1071 [2024-11-28 02:52:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:46,245 INFO L225 Difference]: With dead ends: 241 [2024-11-28 02:52:46,245 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 02:52:46,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2139 SyntacticMatches, 160 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7611 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=871, Invalid=3161, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 02:52:46,250 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:46,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 232 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:52:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 02:52:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 231. [2024-11-28 02:52:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 187 states have (on average 1.0213903743315509) internal successors, (191), 184 states have internal predecessors, (191), 30 states have call successors, (30), 23 states have call predecessors, (30), 13 states have return successors, (85), 23 states have call predecessors, (85), 29 states have call successors, (85) [2024-11-28 02:52:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 306 transitions. [2024-11-28 02:52:46,288 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 306 transitions. Word has length 1071 [2024-11-28 02:52:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:46,290 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 306 transitions. [2024-11-28 02:52:46,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.5762711864406778) internal successors, (152), 60 states have internal predecessors, (152), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (41), 41 states have call predecessors, (41), 16 states have call successors, (41) [2024-11-28 02:52:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 306 transitions. [2024-11-28 02:52:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3249 [2024-11-28 02:52:46,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:46,362 INFO L218 NwaCegarLoop]: trace histogram [334, 327, 271, 169, 169, 169, 169, 164, 164, 164, 164, 164, 163, 163, 163, 162, 102, 63, 1, 1, 1, 1] [2024-11-28 02:52:46,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:52:46,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:52:46,566 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:52:46,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 72869684, now seen corresponding path program 15 times [2024-11-28 02:52:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950704440] [2024-11-28 02:52:46,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:52:46,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:47,499 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 160 check-sat command(s) [2024-11-28 02:52:47,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 390070 backedges. 121759 proven. 39771 refuted. 0 times theorem prover too weak. 228540 trivial. 0 not checked. [2024-11-28 02:55:47,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950704440] [2024-11-28 02:55:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950704440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:55:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092339795] [2024-11-28 02:55:47,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:55:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:55:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:55:47,618 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:55:47,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:55:49,872 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 160 check-sat command(s) [2024-11-28 02:55:49,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:55:49,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 4186 conjuncts, 437 conjuncts are in the unsatisfiable core [2024-11-28 02:55:49,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:55:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 390070 backedges. 117507 proven. 31439 refuted. 0 times theorem prover too weak. 241124 trivial. 0 not checked. [2024-11-28 02:55:52,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:59:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 390070 backedges. 120209 proven. 30251 refuted. 0 times theorem prover too weak. 239610 trivial. 0 not checked. [2024-11-28 02:59:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092339795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:59:41,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:59:41,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27, 50] total 67 [2024-11-28 02:59:41,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203223895] [2024-11-28 02:59:41,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:59:41,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 02:59:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:41,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 02:59:41,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=3557, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 02:59:41,620 INFO L87 Difference]: Start difference. First operand 231 states and 306 transitions. Second operand has 68 states, 67 states have (on average 2.701492537313433) internal successors, (181), 68 states have internal predecessors, (181), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (49), 48 states have call predecessors, (49), 18 states have call successors, (49) [2024-11-28 02:59:42,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:42,150 INFO L93 Difference]: Finished difference Result 289 states and 423 transitions. [2024-11-28 02:59:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 02:59:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.701492537313433) internal successors, (181), 68 states have internal predecessors, (181), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (49), 48 states have call predecessors, (49), 18 states have call successors, (49) Word has length 3248 [2024-11-28 02:59:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:42,157 INFO L225 Difference]: With dead ends: 289 [2024-11-28 02:59:42,157 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 02:59:42,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6939 GetRequests, 6456 SyntacticMatches, 409 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14666 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1215, Invalid=4485, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 02:59:42,160 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:42,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 242 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:59:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 02:59:42,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 249. [2024-11-28 02:59:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 201 states have (on average 1.0199004975124377) internal successors, (205), 198 states have internal predecessors, (205), 32 states have call successors, (32), 23 states have call predecessors, (32), 15 states have return successors, (117), 27 states have call predecessors, (117), 31 states have call successors, (117) [2024-11-28 02:59:42,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 354 transitions. [2024-11-28 02:59:42,196 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 354 transitions. Word has length 3248 [2024-11-28 02:59:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:42,199 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 354 transitions. [2024-11-28 02:59:42,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.701492537313433) internal successors, (181), 68 states have internal predecessors, (181), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (49), 48 states have call predecessors, (49), 18 states have call successors, (49) [2024-11-28 02:59:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 354 transitions. [2024-11-28 02:59:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5407 [2024-11-28 02:59:42,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:42,375 INFO L218 NwaCegarLoop]: trace histogram [554, 547, 449, 279, 279, 279, 279, 274, 274, 274, 274, 274, 273, 273, 273, 272, 170, 105, 1, 1, 1, 1] [2024-11-28 02:59:42,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 02:59:42,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:42,575 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:59:42,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1689005204, now seen corresponding path program 16 times [2024-11-28 02:59:42,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:42,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256585605] [2024-11-28 02:59:42,577 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:59:42,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:43,303 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:59:43,303 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1082931 backedges. 7707 proven. 56416 refuted. 0 times theorem prover too weak. 1018808 trivial. 0 not checked. [2024-11-28 03:00:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256585605] [2024-11-28 03:00:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256585605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089175602] [2024-11-28 03:00:02,921 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:00:02,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:02,923 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:02,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:00:06,067 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:00:06,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:06,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 6690 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:00:06,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1082931 backedges. 530130 proven. 19810 refuted. 0 times theorem prover too weak. 532991 trivial. 0 not checked. [2024-11-28 03:00:06,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1082931 backedges. 9230 proven. 64345 refuted. 0 times theorem prover too weak. 1009356 trivial. 0 not checked. [2024-11-28 03:00:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089175602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:21,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:21,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 34] total 39 [2024-11-28 03:00:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836940226] [2024-11-28 03:00:21,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:21,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:00:21,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:21,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:00:21,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:00:21,561 INFO L87 Difference]: Start difference. First operand 249 states and 354 transitions. Second operand has 39 states, 39 states have (on average 5.897435897435898) internal successors, (230), 39 states have internal predecessors, (230), 34 states have call successors, (41), 7 states have call predecessors, (41), 15 states have return successors, (46), 17 states have call predecessors, (46), 29 states have call successors, (46) [2024-11-28 03:00:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:22,650 INFO L93 Difference]: Finished difference Result 587 states and 960 transitions. [2024-11-28 03:00:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 03:00:22,651 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.897435897435898) internal successors, (230), 39 states have internal predecessors, (230), 34 states have call successors, (41), 7 states have call predecessors, (41), 15 states have return successors, (46), 17 states have call predecessors, (46), 29 states have call successors, (46) Word has length 5406 [2024-11-28 03:00:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:22,656 INFO L225 Difference]: With dead ends: 587 [2024-11-28 03:00:22,656 INFO L226 Difference]: Without dead ends: 343 [2024-11-28 03:00:22,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10891 GetRequests, 10789 SyntacticMatches, 24 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1615, Invalid=4705, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 03:00:22,661 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 639 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:22,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 177 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:00:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-28 03:00:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 312. [2024-11-28 03:00:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 253 states have (on average 1.023715415019763) internal successors, (259), 248 states have internal predecessors, (259), 40 states have call successors, (40), 29 states have call predecessors, (40), 18 states have return successors, (150), 34 states have call predecessors, (150), 39 states have call successors, (150) [2024-11-28 03:00:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 449 transitions. [2024-11-28 03:00:22,701 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 449 transitions. Word has length 5406 [2024-11-28 03:00:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:22,702 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 449 transitions. [2024-11-28 03:00:22,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.897435897435898) internal successors, (230), 39 states have internal predecessors, (230), 34 states have call successors, (41), 7 states have call predecessors, (41), 15 states have return successors, (46), 17 states have call predecessors, (46), 29 states have call successors, (46) [2024-11-28 03:00:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 449 transitions. [2024-11-28 03:00:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4624 [2024-11-28 03:00:22,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:22,855 INFO L218 NwaCegarLoop]: trace histogram [473, 469, 383, 237, 237, 237, 237, 235, 235, 235, 235, 235, 234, 234, 234, 233, 146, 90, 1, 1, 1, 1] [2024-11-28 03:00:22,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:00:23,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:00:23,056 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:23,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash -298810732, now seen corresponding path program 17 times [2024-11-28 03:00:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:23,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642743941] [2024-11-28 03:00:23,058 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:00:23,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:24,106 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 201 check-sat command(s) [2024-11-28 03:00:24,106 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 791562 backedges. 37723 proven. 30545 refuted. 0 times theorem prover too weak. 723294 trivial. 0 not checked. [2024-11-28 03:00:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642743941] [2024-11-28 03:00:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642743941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529304966] [2024-11-28 03:00:37,804 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:00:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:37,806 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:37,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:00:42,264 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 201 check-sat command(s) [2024-11-28 03:00:42,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:42,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 5113 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:00:42,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 791562 backedges. 363005 proven. 10859 refuted. 0 times theorem prover too weak. 417698 trivial. 0 not checked. [2024-11-28 03:00:42,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 791562 backedges. 37721 proven. 30740 refuted. 0 times theorem prover too weak. 723101 trivial. 0 not checked. [2024-11-28 03:01:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529304966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:00,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 35] total 39 [2024-11-28 03:01:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582963568] [2024-11-28 03:01:00,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:00,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:01:00,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:00,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:01:00,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1210, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:01:00,534 INFO L87 Difference]: Start difference. First operand 312 states and 449 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, (40), 2 states have call predecessors, (40), 18 states have return successors, (53), 20 states have call predecessors, (53), 34 states have call successors, (53) [2024-11-28 03:01:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:01,378 INFO L93 Difference]: Finished difference Result 599 states and 920 transitions. [2024-11-28 03:01:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 03:01:01,381 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, (40), 2 states have call predecessors, (40), 18 states have return successors, (53), 20 states have call predecessors, (53), 34 states have call successors, (53) Word has length 4623 [2024-11-28 03:01:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:01,389 INFO L225 Difference]: With dead ends: 599 [2024-11-28 03:01:01,389 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 03:01:01,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9305 GetRequests, 9227 SyntacticMatches, 17 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=970, Invalid=2936, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 03:01:01,396 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 355 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:01,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 351 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:01:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 03:01:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 208. [2024-11-28 03:01:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 165 states have internal predecessors, (170), 27 states have call successors, (27), 18 states have call predecessors, (27), 13 states have return successors, (94), 24 states have call predecessors, (94), 26 states have call successors, (94) [2024-11-28 03:01:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2024-11-28 03:01:01,437 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 4623 [2024-11-28 03:01:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:01,443 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2024-11-28 03:01:01,444 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, (40), 2 states have call predecessors, (40), 18 states have return successors, (53), 20 states have call predecessors, (53), 34 states have call successors, (53) [2024-11-28 03:01:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2024-11-28 03:01:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3485 [2024-11-28 03:01:01,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:01,537 INFO L218 NwaCegarLoop]: trace histogram [356, 354, 288, 178, 178, 178, 178, 177, 177, 177, 177, 177, 177, 177, 177, 176, 110, 68, 1, 1, 1, 1] [2024-11-28 03:01:01,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:01:01,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:01:01,737 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:01,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -763201638, now seen corresponding path program 18 times [2024-11-28 03:01:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:01,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131315806] [2024-11-28 03:01:01,739 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:01:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:03,427 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 240 check-sat command(s) [2024-11-28 03:01:03,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 19857 proven. 23094 refuted. 0 times theorem prover too weak. 406010 trivial. 0 not checked. [2024-11-28 03:01:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131315806] [2024-11-28 03:01:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131315806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954194753] [2024-11-28 03:01:22,513 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:01:22,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:22,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:22,515 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:22,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:01:27,989 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 240 check-sat command(s) [2024-11-28 03:01:27,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:28,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 5895 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:01:28,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 19480 proven. 23365 refuted. 0 times theorem prover too weak. 406116 trivial. 0 not checked. [2024-11-28 03:01:28,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 448961 backedges. 19500 proven. 23580 refuted. 0 times theorem prover too weak. 405881 trivial. 0 not checked. [2024-11-28 03:01:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954194753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:39,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 33] total 39 [2024-11-28 03:01:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076248344] [2024-11-28 03:01:39,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:39,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:01:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:39,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:01:39,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:01:39,794 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 39 states, 39 states have (on average 5.589743589743589) internal successors, (218), 39 states have internal predecessors, (218), 28 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 25 states have call predecessors, (50), 28 states have call successors, (50) [2024-11-28 03:01:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:41,241 INFO L93 Difference]: Finished difference Result 600 states and 874 transitions. [2024-11-28 03:01:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 03:01:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.589743589743589) internal successors, (218), 39 states have internal predecessors, (218), 28 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 25 states have call predecessors, (50), 28 states have call successors, (50) Word has length 3484 [2024-11-28 03:01:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:41,251 INFO L225 Difference]: With dead ends: 600 [2024-11-28 03:01:41,251 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 03:01:41,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7052 GetRequests, 6953 SyntacticMatches, 16 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1701, Invalid=5439, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 03:01:41,255 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 595 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:41,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 259 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:01:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 03:01:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 265. [2024-11-28 03:01:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 215 states have (on average 1.0232558139534884) internal successors, (220), 211 states have internal predecessors, (220), 35 states have call successors, (35), 26 states have call predecessors, (35), 14 states have return successors, (112), 27 states have call predecessors, (112), 34 states have call successors, (112) [2024-11-28 03:01:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 367 transitions. [2024-11-28 03:01:41,293 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 367 transitions. Word has length 3484 [2024-11-28 03:01:41,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:41,295 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 367 transitions. [2024-11-28 03:01:41,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.589743589743589) internal successors, (218), 39 states have internal predecessors, (218), 28 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 25 states have call predecessors, (50), 28 states have call successors, (50) [2024-11-28 03:01:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 367 transitions. [2024-11-28 03:01:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3734 [2024-11-28 03:01:41,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:41,404 INFO L218 NwaCegarLoop]: trace histogram [381, 380, 308, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 189, 118, 73, 1, 1, 1, 1] [2024-11-28 03:01:41,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:01:41,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:01:41,605 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:41,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1898098946, now seen corresponding path program 19 times [2024-11-28 03:01:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:41,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931642986] [2024-11-28 03:01:41,606 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:01:41,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 515628 backedges. 36172 proven. 11666 refuted. 0 times theorem prover too weak. 467790 trivial. 0 not checked. [2024-11-28 03:02:07,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931642986] [2024-11-28 03:02:07,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931642986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484715730] [2024-11-28 03:02:07,122 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:02:07,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:07,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:07,124 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:07,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:02:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:10,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 6916 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:02:10,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 515628 backedges. 250682 proven. 20731 refuted. 0 times theorem prover too weak. 244215 trivial. 0 not checked. [2024-11-28 03:02:10,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:02:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 515628 backedges. 17339 proven. 42138 refuted. 0 times theorem prover too weak. 456151 trivial. 0 not checked. [2024-11-28 03:02:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484715730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:02:31,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:02:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 39] total 44 [2024-11-28 03:02:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403282545] [2024-11-28 03:02:31,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:02:31,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:02:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:31,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:02:31,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1581, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:02:31,247 INFO L87 Difference]: Start difference. First operand 265 states and 367 transitions. Second operand has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 38 states have call successors, (45), 2 states have call predecessors, (45), 20 states have return successors, (62), 22 states have call predecessors, (62), 38 states have call successors, (62) [2024-11-28 03:02:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:32,424 INFO L93 Difference]: Finished difference Result 549 states and 780 transitions. [2024-11-28 03:02:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:02:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 38 states have call successors, (45), 2 states have call predecessors, (45), 20 states have return successors, (62), 22 states have call predecessors, (62), 38 states have call successors, (62) Word has length 3733 [2024-11-28 03:02:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:32,431 INFO L225 Difference]: With dead ends: 549 [2024-11-28 03:02:32,431 INFO L226 Difference]: Without dead ends: 289 [2024-11-28 03:02:32,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7527 GetRequests, 7439 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1214, Invalid=3756, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:02:32,434 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 426 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:32,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 421 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:02:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-28 03:02:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 256. [2024-11-28 03:02:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 208 states have (on average 1.0192307692307692) internal successors, (212), 205 states have internal predecessors, (212), 35 states have call successors, (35), 28 states have call predecessors, (35), 12 states have return successors, (88), 22 states have call predecessors, (88), 34 states have call successors, (88) [2024-11-28 03:02:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 335 transitions. [2024-11-28 03:02:32,469 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 335 transitions. Word has length 3733 [2024-11-28 03:02:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:32,472 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 335 transitions. [2024-11-28 03:02:32,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.909090909090909) internal successors, (260), 44 states have internal predecessors, (260), 38 states have call successors, (45), 2 states have call predecessors, (45), 20 states have return successors, (62), 22 states have call predecessors, (62), 38 states have call successors, (62) [2024-11-28 03:02:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 335 transitions. [2024-11-28 03:02:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6753 [2024-11-28 03:02:32,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:32,769 INFO L218 NwaCegarLoop]: trace histogram [692, 683, 561, 349, 349, 349, 349, 342, 342, 342, 342, 342, 341, 341, 341, 340, 212, 131, 1, 1, 1, 1] [2024-11-28 03:02:32,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:02:32,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be5f8af3-6652-4450-8c9a-e0aa9cca8a96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:02:32,970 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:02:32,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1764662092, now seen corresponding path program 20 times [2024-11-28 03:02:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615106194] [2024-11-28 03:02:32,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:02:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:35,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:02:35,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat