./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd --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 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:03:14,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:03:15,022 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 16:03:15,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:03:15,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:03:15,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:03:15,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:03:15,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:03:15,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:03:15,059 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:03:15,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:03:15,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:03:15,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:03:15,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:03:15,060 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:03:15,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:03:15,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:03:15,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:03:15,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:03:15,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:03:15,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:03:15,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:03:15,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:03:15,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:03:15,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:03:15,062 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 16:03:15,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:03:15,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:03:15,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:03:15,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:03:15,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:03:15,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:03:15,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:03:15,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:03:15,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:03:15,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:03:15,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:03:15,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:03:15,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:03:15,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:03:15,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:03:15,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:03:15,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:03:15,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:03:15,066 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_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd 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 -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2024-11-13 16:03:15,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:03:15,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:03:15,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:03:15,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:03:15,419 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:03:15,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c Unable to find full path for "g++" [2024-11-13 16:03:17,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:03:18,268 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:03:18,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-13 16:03:18,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/data/bf30200db/bcec32ff71b244dd9aa4088a0ff97fce/FLAG8058a91fc [2024-11-13 16:03:18,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/data/bf30200db/bcec32ff71b244dd9aa4088a0ff97fce [2024-11-13 16:03:18,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:03:18,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:03:18,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:03:18,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:03:18,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:03:18,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f631192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18, skipping insertion in model container [2024-11-13 16:03:18,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,359 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:03:18,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:03:18,562 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:03:18,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:03:18,599 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:03:18,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18 WrapperNode [2024-11-13 16:03:18,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:03:18,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:03:18,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:03:18,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:03:18,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,637 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-13 16:03:18,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:03:18,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:03:18,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:03:18,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:03:18,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,667 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]. [2024-11-13 16:03:18,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:03:18,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:03:18,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:03:18,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:03:18,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (1/1) ... [2024-11-13 16:03:18,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:03:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:18,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:03:18,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:03:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:03:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:03:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-13 16:03:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-13 16:03:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-13 16:03:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-13 16:03:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:03:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:03:18,863 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:03:18,866 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:03:19,079 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-13 16:03:19,080 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:03:19,094 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:03:19,095 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 16:03:19,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:03:19 BoogieIcfgContainer [2024-11-13 16:03:19,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:03:19,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:03:19,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:03:19,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:03:19,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:03:18" (1/3) ... [2024-11-13 16:03:19,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fa63ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:03:19, skipping insertion in model container [2024-11-13 16:03:19,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:03:18" (2/3) ... [2024-11-13 16:03:19,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fa63ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:03:19, skipping insertion in model container [2024-11-13 16:03:19,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:03:19" (3/3) ... [2024-11-13 16:03:19,111 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2024-11-13 16:03:19,134 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:03:19,137 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_4-2.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2024-11-13 16:03:19,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:03:19,252 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;@2f071851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:03:19,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-13 16:03:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 16:03:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 16:03:19,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:19,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:19,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:19,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2024-11-13 16:03:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:19,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098628652] [2024-11-13 16:03:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098628652] [2024-11-13 16:03:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098628652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:19,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:03:19,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937029065] [2024-11-13 16:03:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:19,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:03:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:03:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:03:19,577 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-11-13 16:03:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:19,640 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-13 16:03:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:03:19,644 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 [2024-11-13 16:03:19,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:19,653 INFO L225 Difference]: With dead ends: 59 [2024-11-13 16:03:19,654 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 16:03:19,662 INFO L431 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 [2024-11-13 16:03:19,668 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:19,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 16:03:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-13 16:03:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 16:03:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-13 16:03:19,722 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2024-11-13 16:03:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:19,723 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-13 16:03:19,723 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) [2024-11-13 16:03:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-13 16:03:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 16:03:19,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:19,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:19,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:03:19,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:19,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2024-11-13 16:03:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035951705] [2024-11-13 16:03:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:19,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:19,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035951705] [2024-11-13 16:03:19,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035951705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:19,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:19,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:03:19,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756106730] [2024-11-13 16:03:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:19,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:03:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:03:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:19,889 INFO L87 Difference]: Start difference. First operand 43 states and 49 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) [2024-11-13 16:03:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:20,020 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-13 16:03:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:03:20,022 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 [2024-11-13 16:03:20,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:20,024 INFO L225 Difference]: With dead ends: 64 [2024-11-13 16:03:20,024 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 16:03:20,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:03:20,027 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:20,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:03:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 16:03:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-13 16:03:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 16:03:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-13 16:03:20,055 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2024-11-13 16:03:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:20,055 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-13 16:03:20,058 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) [2024-11-13 16:03:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-13 16:03:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:03:20,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:20,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:20,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:03:20,062 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:20,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2024-11-13 16:03:20,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543741846] [2024-11-13 16:03:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:20,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:20,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:20,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543741846] [2024-11-13 16:03:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543741846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:20,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:20,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:03:20,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465971856] [2024-11-13 16:03:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:03:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:03:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:03:20,168 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:03:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:20,236 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-11-13 16:03:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:03:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 16:03:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:20,240 INFO L225 Difference]: With dead ends: 58 [2024-11-13 16:03:20,240 INFO L226 Difference]: Without dead ends: 56 [2024-11-13 16:03:20,241 INFO L431 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 [2024-11-13 16:03:20,244 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:20,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-13 16:03:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-13 16:03:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 16:03:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-13 16:03:20,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2024-11-13 16:03:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:20,282 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-13 16:03:20,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:03:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-13 16:03:20,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 16:03:20,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:20,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:20,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:03:20,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:20,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2024-11-13 16:03:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410801732] [2024-11-13 16:03:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:20,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:20,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410801732] [2024-11-13 16:03:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410801732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:20,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:20,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:03:20,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471719126] [2024-11-13 16:03:20,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:20,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:03:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:03:20,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:03:20,439 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:03:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:20,669 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-11-13 16:03:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:03:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 16:03:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:20,671 INFO L225 Difference]: With dead ends: 58 [2024-11-13 16:03:20,671 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 16:03:20,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:03:20,673 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:20,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 16:03:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-13 16:03:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 16:03:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-13 16:03:20,685 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2024-11-13 16:03:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:20,686 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-13 16:03:20,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:03:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-13 16:03:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 16:03:20,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:20,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:20,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:03:20,688 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:20,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2024-11-13 16:03:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:20,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556838714] [2024-11-13 16:03:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:20,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:20,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:03:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:20,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 16:03:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:03:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556838714] [2024-11-13 16:03:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556838714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:20,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:20,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:03:20,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940383703] [2024-11-13 16:03:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:20,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:03:20,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:03:20,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:20,916 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:20,970 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-13 16:03:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:03:20,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-13 16:03:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:20,972 INFO L225 Difference]: With dead ends: 74 [2024-11-13 16:03:20,972 INFO L226 Difference]: Without dead ends: 69 [2024-11-13 16:03:20,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:20,974 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:20,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-13 16:03:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-13 16:03:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-13 16:03:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-13 16:03:20,985 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2024-11-13 16:03:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:20,985 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-13 16:03:20,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-13 16:03:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 16:03:20,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:20,987 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:20,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:03:20,987 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:20,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2024-11-13 16:03:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534594603] [2024-11-13 16:03:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:21,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:03:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:21,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 16:03:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:03:21,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:21,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534594603] [2024-11-13 16:03:21,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534594603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:21,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354438685] [2024-11-13 16:03:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:21,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:21,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:21,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:03:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:21,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:03:21,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:21,497 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:03:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354438685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:21,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:03:21,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-13 16:03:21,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232629345] [2024-11-13 16:03:21,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:21,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:03:21,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:03:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:03:21,500 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:21,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:21,734 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-11-13 16:03:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:03:21,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-13 16:03:21,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:21,737 INFO L225 Difference]: With dead ends: 113 [2024-11-13 16:03:21,737 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 16:03:21,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:03:21,741 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:21,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 16:03:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-13 16:03:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-13 16:03:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-13 16:03:21,763 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2024-11-13 16:03:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:21,764 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-13 16:03:21,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-13 16:03:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 16:03:21,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:21,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:21,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:03:21,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:21,968 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:21,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2024-11-13 16:03:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:21,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124276633] [2024-11-13 16:03:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:03:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 16:03:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:03:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:22,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124276633] [2024-11-13 16:03:22,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124276633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:22,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:03:22,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540727889] [2024-11-13 16:03:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:22,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:03:22,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:22,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:03:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:22,111 INFO L87 Difference]: Start difference. First operand 59 states and 71 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:22,175 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-13 16:03:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:03:22,177 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-13 16:03:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:22,178 INFO L225 Difference]: With dead ends: 83 [2024-11-13 16:03:22,178 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 16:03:22,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:22,180 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:22,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 16:03:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-11-13 16:03:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-13 16:03:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2024-11-13 16:03:22,207 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2024-11-13 16:03:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:22,207 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2024-11-13 16:03:22,208 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2024-11-13 16:03:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 16:03:22,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:22,209 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:22,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:03:22,210 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:22,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2024-11-13 16:03:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:22,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421195252] [2024-11-13 16:03:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-13 16:03:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 16:03:22,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421195252] [2024-11-13 16:03:22,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421195252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:22,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:22,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:03:22,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024606864] [2024-11-13 16:03:22,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:22,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:03:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:03:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:22,403 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:22,468 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-13 16:03:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:03:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-13 16:03:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:22,471 INFO L225 Difference]: With dead ends: 83 [2024-11-13 16:03:22,471 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 16:03:22,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:22,473 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:22,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 16:03:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-13 16:03:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-13 16:03:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-11-13 16:03:22,488 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2024-11-13 16:03:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:22,489 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-11-13 16:03:22,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-11-13 16:03:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:03:22,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:22,491 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:22,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:03:22,491 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:22,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1581850604, now seen corresponding path program 1 times [2024-11-13 16:03:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:22,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246495657] [2024-11-13 16:03:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:22,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:03:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 16:03:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-13 16:03:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:03:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246495657] [2024-11-13 16:03:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246495657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123627912] [2024-11-13 16:03:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:22,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:22,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:22,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:22,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:03:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:22,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:03:22,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:03:22,902 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:03:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123627912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:03:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-13 16:03:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688076402] [2024-11-13 16:03:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:22,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:03:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:22,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:03:22,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:03:22,907 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:03:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:23,086 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2024-11-13 16:03:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:03:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-13 16:03:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:23,088 INFO L225 Difference]: With dead ends: 141 [2024-11-13 16:03:23,089 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 16:03:23,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:03:23,094 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 31 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:23,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 176 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:03:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 16:03:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-11-13 16:03:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-13 16:03:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2024-11-13 16:03:23,123 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2024-11-13 16:03:23,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:23,123 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2024-11-13 16:03:23,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:03:23,123 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2024-11-13 16:03:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 16:03:23,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:23,129 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:23,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:03:23,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 16:03:23,330 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:23,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2024-11-13 16:03:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:23,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833466428] [2024-11-13 16:03:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:23,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:23,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-13 16:03:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 16:03:23,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833466428] [2024-11-13 16:03:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833466428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697497911] [2024-11-13 16:03:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:23,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:23,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:23,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:03:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:23,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:03:23,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:23,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:03:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697497911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:24,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:24,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-13 16:03:24,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938694193] [2024-11-13 16:03:24,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:24,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:03:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:03:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:03:24,050 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 16:03:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:24,704 INFO L93 Difference]: Finished difference Result 183 states and 242 transitions. [2024-11-13 16:03:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:03:24,706 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2024-11-13 16:03:24,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:24,707 INFO L225 Difference]: With dead ends: 183 [2024-11-13 16:03:24,707 INFO L226 Difference]: Without dead ends: 118 [2024-11-13 16:03:24,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:03:24,710 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 106 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:24,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 486 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:03:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-13 16:03:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-13 16:03:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.1625) internal successors, (93), 85 states have internal predecessors, (93), 14 states have call successors, (14), 5 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-13 16:03:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-11-13 16:03:24,731 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 30 [2024-11-13 16:03:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:24,731 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-11-13 16:03:24,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 16:03:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-11-13 16:03:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:03:24,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:24,733 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:24,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:03:24,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:24,938 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:24,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1796117801, now seen corresponding path program 1 times [2024-11-13 16:03:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551314392] [2024-11-13 16:03:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 16:03:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 16:03:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551314392] [2024-11-13 16:03:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551314392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:25,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:03:25,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454946243] [2024-11-13 16:03:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:25,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:03:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:03:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:25,078 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:25,133 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2024-11-13 16:03:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:03:25,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-13 16:03:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:25,138 INFO L225 Difference]: With dead ends: 138 [2024-11-13 16:03:25,138 INFO L226 Difference]: Without dead ends: 136 [2024-11-13 16:03:25,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:03:25,141 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:25,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-13 16:03:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2024-11-13 16:03:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1368421052631579) internal successors, (108), 98 states have internal predecessors, (108), 17 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (40), 20 states have call predecessors, (40), 16 states have call successors, (40) [2024-11-13 16:03:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2024-11-13 16:03:25,173 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 31 [2024-11-13 16:03:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:25,175 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2024-11-13 16:03:25,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2024-11-13 16:03:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 16:03:25,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:25,180 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:25,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:03:25,181 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:25,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1674269372, now seen corresponding path program 1 times [2024-11-13 16:03:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769109154] [2024-11-13 16:03:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 16:03:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-13 16:03:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 16:03:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769109154] [2024-11-13 16:03:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769109154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781022119] [2024-11-13 16:03:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:25,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:25,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:25,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:25,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:03:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:25,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:03:25,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:03:25,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:03:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781022119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:25,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:25,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 14 [2024-11-13 16:03:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131078927] [2024-11-13 16:03:25,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:25,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:03:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:03:25,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:03:25,793 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 16:03:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:26,293 INFO L93 Difference]: Finished difference Result 235 states and 311 transitions. [2024-11-13 16:03:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:03:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 45 [2024-11-13 16:03:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:26,296 INFO L225 Difference]: With dead ends: 235 [2024-11-13 16:03:26,296 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 16:03:26,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:03:26,300 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 84 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:26,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 416 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:03:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 16:03:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2024-11-13 16:03:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 89 states have (on average 1.146067415730337) internal successors, (102), 93 states have internal predecessors, (102), 16 states have call successors, (16), 5 states have call predecessors, (16), 8 states have return successors, (37), 18 states have call predecessors, (37), 15 states have call successors, (37) [2024-11-13 16:03:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 155 transitions. [2024-11-13 16:03:26,328 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 155 transitions. Word has length 45 [2024-11-13 16:03:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:26,329 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 155 transitions. [2024-11-13 16:03:26,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 16:03:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 155 transitions. [2024-11-13 16:03:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:03:26,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:26,332 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:26,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:03:26,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:26,536 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:26,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:26,537 INFO L85 PathProgramCache]: Analyzing trace with hash 311039018, now seen corresponding path program 1 times [2024-11-13 16:03:26,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:26,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121557703] [2024-11-13 16:03:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:26,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:26,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:03:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:26,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 16:03:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 16:03:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121557703] [2024-11-13 16:03:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121557703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618092941] [2024-11-13 16:03:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:26,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:26,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:03:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:26,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:03:26,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 16:03:26,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 16:03:26,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618092941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:26,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:26,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-13 16:03:26,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221459100] [2024-11-13 16:03:26,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:26,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:03:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:03:26,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:03:26,887 INFO L87 Difference]: Start difference. First operand 117 states and 155 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:03:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:27,038 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2024-11-13 16:03:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:03:27,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2024-11-13 16:03:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:27,040 INFO L225 Difference]: With dead ends: 131 [2024-11-13 16:03:27,041 INFO L226 Difference]: Without dead ends: 129 [2024-11-13 16:03:27,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:03:27,042 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:27,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 254 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:03:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-13 16:03:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2024-11-13 16:03:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 89 states have internal predecessors, (100), 15 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (31), 18 states have call predecessors, (31), 14 states have call successors, (31) [2024-11-13 16:03:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-11-13 16:03:27,068 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 36 [2024-11-13 16:03:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:27,069 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-11-13 16:03:27,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 16:03:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-11-13 16:03:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 16:03:27,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:27,070 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:27,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:03:27,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:27,273 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:27,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2024-11-13 16:03:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:27,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103630788] [2024-11-13 16:03:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 16:03:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 16:03:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 16:03:27,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103630788] [2024-11-13 16:03:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103630788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659022971] [2024-11-13 16:03:27,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:03:27,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:27,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:27,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:27,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:03:27,488 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:03:27,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:27,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:03:27,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 16:03:27,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:03:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659022971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:27,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:03:27,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-13 16:03:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868676564] [2024-11-13 16:03:27,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:27,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:03:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:03:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:03:27,553 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:27,596 INFO L93 Difference]: Finished difference Result 123 states and 161 transitions. [2024-11-13 16:03:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:03:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-13 16:03:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:27,599 INFO L225 Difference]: With dead ends: 123 [2024-11-13 16:03:27,599 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 16:03:27,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:03:27,600 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:27,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:03:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 16:03:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-13 16:03:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 92 states have internal predecessors, (106), 15 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (31), 21 states have call predecessors, (31), 14 states have call successors, (31) [2024-11-13 16:03:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 152 transitions. [2024-11-13 16:03:27,613 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 152 transitions. Word has length 42 [2024-11-13 16:03:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:27,614 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 152 transitions. [2024-11-13 16:03:27,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:03:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 152 transitions. [2024-11-13 16:03:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 16:03:27,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:27,615 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:27,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:03:27,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:03:27,816 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:27,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2024-11-13 16:03:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11182588] [2024-11-13 16:03:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 16:03:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 16:03:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 16:03:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11182588] [2024-11-13 16:03:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11182588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972018313] [2024-11-13 16:03:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:27,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:27,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:27,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:03:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:28,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:03:28,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:28,268 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:28,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:03:28,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972018313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:28,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:28,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2024-11-13 16:03:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076005723] [2024-11-13 16:03:28,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:28,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:03:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:03:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:03:28,550 INFO L87 Difference]: Start difference. First operand 119 states and 152 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:03:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:29,254 INFO L93 Difference]: Finished difference Result 218 states and 287 transitions. [2024-11-13 16:03:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:03:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-11-13 16:03:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:29,256 INFO L225 Difference]: With dead ends: 218 [2024-11-13 16:03:29,257 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 16:03:29,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:03:29,261 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:29,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 318 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:03:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 16:03:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-13 16:03:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 83 states have internal predecessors, (93), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (21), 17 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-13 16:03:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2024-11-13 16:03:29,276 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 43 [2024-11-13 16:03:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:29,277 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2024-11-13 16:03:29,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-13 16:03:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2024-11-13 16:03:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 16:03:29,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:29,279 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:29,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 16:03:29,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:29,480 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:29,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 769012006, now seen corresponding path program 1 times [2024-11-13 16:03:29,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:29,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474400734] [2024-11-13 16:03:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:29,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:29,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 16:03:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:29,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 16:03:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:29,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:29,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 16:03:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 16:03:29,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:29,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474400734] [2024-11-13 16:03:29,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474400734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:29,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547591223] [2024-11-13 16:03:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:29,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:29,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:29,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:29,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:03:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:29,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:03:29,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 16:03:29,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:03:29,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547591223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:29,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:03:29,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 16 [2024-11-13 16:03:29,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821932564] [2024-11-13 16:03:29,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:29,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 16:03:29,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 16:03:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:03:29,876 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 16:03:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:30,160 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2024-11-13 16:03:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:03:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2024-11-13 16:03:30,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:30,162 INFO L225 Difference]: With dead ends: 159 [2024-11-13 16:03:30,163 INFO L226 Difference]: Without dead ends: 112 [2024-11-13 16:03:30,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-13 16:03:30,164 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 118 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:30,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 190 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-13 16:03:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2024-11-13 16:03:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 86 states have internal predecessors, (96), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (21), 17 states have call predecessors, (21), 12 states have call successors, (21) [2024-11-13 16:03:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2024-11-13 16:03:30,180 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 67 [2024-11-13 16:03:30,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:30,181 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2024-11-13 16:03:30,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 16:03:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2024-11-13 16:03:30,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 16:03:30,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:30,182 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:30,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:03:30,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:30,383 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:30,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2044390564, now seen corresponding path program 2 times [2024-11-13 16:03:30,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:30,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54859206] [2024-11-13 16:03:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:30,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:30,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:03:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:30,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 16:03:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:30,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:30,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 16:03:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:03:30,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54859206] [2024-11-13 16:03:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54859206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656156000] [2024-11-13 16:03:30,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:03:30,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:30,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:30,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:30,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:03:30,526 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:03:30,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:30,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 16:03:30,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:03:30,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:03:30,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656156000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:30,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:30,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 15 [2024-11-13 16:03:30,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235118466] [2024-11-13 16:03:30,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:30,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:03:30,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:03:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:03:30,825 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 12 states have internal predecessors, (71), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-13 16:03:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:31,167 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2024-11-13 16:03:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:03:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 12 states have internal predecessors, (71), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2024-11-13 16:03:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:31,170 INFO L225 Difference]: With dead ends: 248 [2024-11-13 16:03:31,172 INFO L226 Difference]: Without dead ends: 153 [2024-11-13 16:03:31,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 103 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:03:31,174 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 88 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:31,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 381 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:03:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-13 16:03:31,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2024-11-13 16:03:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (35), 23 states have call predecessors, (35), 16 states have call successors, (35) [2024-11-13 16:03:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2024-11-13 16:03:31,189 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 55 [2024-11-13 16:03:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:31,189 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2024-11-13 16:03:31,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.071428571428571) internal successors, (71), 12 states have internal predecessors, (71), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-13 16:03:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2024-11-13 16:03:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 16:03:31,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:31,190 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:31,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 16:03:31,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 16:03:31,391 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:31,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash -793619489, now seen corresponding path program 1 times [2024-11-13 16:03:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143686647] [2024-11-13 16:03:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:31,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 16:03:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:31,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 16:03:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:31,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:31,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 16:03:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 16:03:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143686647] [2024-11-13 16:03:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143686647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102184774] [2024-11-13 16:03:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:31,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:31,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:31,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:31,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:03:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:31,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 16:03:31,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:03:31,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 16:03:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102184774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:31,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 16 [2024-11-13 16:03:31,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542499754] [2024-11-13 16:03:31,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:31,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 16:03:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:31,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 16:03:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:03:31,971 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 13 states have internal predecessors, (58), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 16:03:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:32,250 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2024-11-13 16:03:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:03:32,251 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 13 states have internal predecessors, (58), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 56 [2024-11-13 16:03:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:32,253 INFO L225 Difference]: With dead ends: 228 [2024-11-13 16:03:32,253 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 16:03:32,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:03:32,256 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 120 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:32,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 189 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 16:03:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2024-11-13 16:03:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 81 states have internal predecessors, (86), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-13 16:03:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2024-11-13 16:03:32,268 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 56 [2024-11-13 16:03:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:32,268 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2024-11-13 16:03:32,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 13 states have internal predecessors, (58), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 16:03:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2024-11-13 16:03:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 16:03:32,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:32,269 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:32,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 16:03:32,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 16:03:32,470 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:32,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1424540440, now seen corresponding path program 1 times [2024-11-13 16:03:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:32,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205608480] [2024-11-13 16:03:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 16:03:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 16:03:32,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:32,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205608480] [2024-11-13 16:03:32,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205608480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:03:32,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:03:32,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:03:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250254169] [2024-11-13 16:03:32,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:03:32,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:03:32,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:03:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:03:32,662 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:03:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:32,743 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2024-11-13 16:03:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:03:32,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2024-11-13 16:03:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:32,744 INFO L225 Difference]: With dead ends: 110 [2024-11-13 16:03:32,745 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 16:03:32,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:03:32,745 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:32,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 234 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:03:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 16:03:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-11-13 16:03:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 82 states have internal predecessors, (87), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-13 16:03:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2024-11-13 16:03:32,755 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 51 [2024-11-13 16:03:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:32,755 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2024-11-13 16:03:32,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:03:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2024-11-13 16:03:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 16:03:32,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:32,756 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:32,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:03:32,756 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:32,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:32,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1958736820, now seen corresponding path program 1 times [2024-11-13 16:03:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:32,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753747807] [2024-11-13 16:03:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:32,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 16:03:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 16:03:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 16:03:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753747807] [2024-11-13 16:03:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753747807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674789303] [2024-11-13 16:03:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:32,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:32,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:32,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:32,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:03:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:33,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:03:33,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 16:03:33,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 16:03:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674789303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:33,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 23 [2024-11-13 16:03:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686610875] [2024-11-13 16:03:33,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:33,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:03:33,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:33,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:03:33,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:03:33,437 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-13 16:03:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:34,145 INFO L93 Difference]: Finished difference Result 182 states and 214 transitions. [2024-11-13 16:03:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 16:03:34,146 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 68 [2024-11-13 16:03:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:34,148 INFO L225 Difference]: With dead ends: 182 [2024-11-13 16:03:34,149 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 16:03:34,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:03:34,152 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 106 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:34,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 189 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:03:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 16:03:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2024-11-13 16:03:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 78 states have internal predecessors, (79), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-13 16:03:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2024-11-13 16:03:34,168 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 68 [2024-11-13 16:03:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:34,168 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2024-11-13 16:03:34,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-13 16:03:34,169 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2024-11-13 16:03:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 16:03:34,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:34,172 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:34,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:03:34,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:34,377 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:34,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash 397031206, now seen corresponding path program 1 times [2024-11-13 16:03:34,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:34,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739160297] [2024-11-13 16:03:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:34,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:03:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:03:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 16:03:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-13 16:03:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739160297] [2024-11-13 16:03:34,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739160297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178163914] [2024-11-13 16:03:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:34,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:34,786 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:34,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:03:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:03:34,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 16:03:35,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:03:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178163914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:35,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:35,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2024-11-13 16:03:35,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704400302] [2024-11-13 16:03:35,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:35,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:03:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:03:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:03:35,708 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-13 16:03:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:36,027 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2024-11-13 16:03:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 16:03:36,027 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 83 [2024-11-13 16:03:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:36,029 INFO L225 Difference]: With dead ends: 131 [2024-11-13 16:03:36,029 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 16:03:36,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 165 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 16:03:36,031 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:36,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 468 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 16:03:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2024-11-13 16:03:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.054054054054054) internal successors, (78), 77 states have internal predecessors, (78), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-13 16:03:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2024-11-13 16:03:36,043 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 83 [2024-11-13 16:03:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:36,043 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2024-11-13 16:03:36,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-13 16:03:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2024-11-13 16:03:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 16:03:36,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:36,045 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:36,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:03:36,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:36,249 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-13 16:03:36,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -576934403, now seen corresponding path program 1 times [2024-11-13 16:03:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445284677] [2024-11-13 16:03:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 16:03:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 16:03:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 16:03:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 16:03:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:03:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-13 16:03:36,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445284677] [2024-11-13 16:03:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445284677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202950508] [2024-11-13 16:03:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:36,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:36,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:36,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:36,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:03:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:36,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 16:03:36,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-13 16:03:36,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 16:03:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202950508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:37,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2024-11-13 16:03:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451820493] [2024-11-13 16:03:37,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:37,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 16:03:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 16:03:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-13 16:03:37,578 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-13 16:03:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:37,725 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-11-13 16:03:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:03:37,726 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 84 [2024-11-13 16:03:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:37,726 INFO L225 Difference]: With dead ends: 104 [2024-11-13 16:03:37,726 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 16:03:37,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 167 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-13 16:03:37,729 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:37,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 434 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:03:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 16:03:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 16:03:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:03:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 16:03:37,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2024-11-13 16:03:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:37,731 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 16:03:37,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-13 16:03:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 16:03:37,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 16:03:37,734 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-13 16:03:37,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-13 16:03:37,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-13 16:03:37,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-13 16:03:37,735 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-13 16:03:37,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-13 16:03:37,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 16:03:37,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 16:03:37,940 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:37,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 16:03:39,100 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:03:39,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:03:39 BoogieIcfgContainer [2024-11-13 16:03:39,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:03:39,139 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:03:39,142 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:03:39,142 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:03:39,143 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:03:19" (3/4) ... [2024-11-13 16:03:39,145 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 16:03:39,152 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-13 16:03:39,152 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-13 16:03:39,158 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 16:03:39,159 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 16:03:39,159 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 16:03:39,159 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 16:03:39,253 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:03:39,254 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 16:03:39,254 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:03:39,257 INFO L158 Benchmark]: Toolchain (without parser) took 20933.64ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.2MB in the beginning and 103.6MB in the end (delta: -11.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-11-13 16:03:39,257 INFO L158 Benchmark]: CDTParser took 1.55ms. Allocated memory is still 83.9MB. Free memory is still 41.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:03:39,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.47ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 81.6MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:03:39,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.54ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:03:39,258 INFO L158 Benchmark]: Boogie Preprocessor took 44.56ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:03:39,258 INFO L158 Benchmark]: RCFGBuilder took 411.62ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 68.1MB in the end (delta: 11.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:03:39,262 INFO L158 Benchmark]: TraceAbstraction took 20039.67ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.8MB in the beginning and 108.9MB in the end (delta: -41.2MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2024-11-13 16:03:39,262 INFO L158 Benchmark]: Witness Printer took 114.51ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 103.6MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 16:03:39,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.55ms. Allocated memory is still 83.9MB. Free memory is still 41.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.47ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 81.6MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.54ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.56ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 411.62ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 68.1MB in the end (delta: 11.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20039.67ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 67.8MB in the beginning and 108.9MB in the end (delta: -41.2MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * Witness Printer took 114.51ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 103.6MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 18.7s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1018 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 986 mSDsluCounter, 4918 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4136 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3947 IncrementalHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 782 mSDtfsCounter, 3947 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1506 GetRequests, 1169 SyntacticMatches, 47 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=17, InterpolantAutomatonStates: 222, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 176 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 1545 NumberOfCodeBlocks, 1545 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2001 ConstructedInterpolants, 0 QuantifiedInterpolants, 4200 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1498 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 44 InterpolantComputations, 13 PerfectInterpolantSequences, 1045/1341 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Requires: (n <= 3) Ensures: ((((((\result == 1) && (n == 1)) || ((\result == 0) && (n <= 0))) || (1 < n)) && ((n < 2) || (((n <= 3) && (0 <= ((long long) 2147483647 + \result))) && (\result <= 2)))) && ((n < 3) || (2 == \result))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Requires: ((n < 3) || (n == 4)) Ensures: ((((n < 3) || (n == 4)) && ((((\result == 0) && (n <= 0)) || (\result == 1)) || (2 < n))) && ((((2 == n) || ((\result == 0) && (n <= 0))) || (n == 1)) || (2 < n))) RESULT: Ultimate proved your program to be correct! [2024-11-13 16:03:39,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea656d2-b5d6-472d-a5a5-6f8222f30fdc/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE