./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme --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 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:44:55,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:44:55,145 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:44:55,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:44:55,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:44:55,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:44:55,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:44:55,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:44:55,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:44:55,211 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:44:55,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:44:55,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:44:55,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:44:55,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:44:55,216 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:44:55,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:44:55,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:44:55,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:44:55,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:44:55,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:44:55,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:44:55,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:44:55,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:44:55,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:44:55,221 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:44:55,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:44:55,222 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:44:55,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:44:55,222 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:44:55,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:44:55,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:44:55,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:44:55,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:44:55,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:55,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:44:55,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:44:55,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:44:55,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:44:55,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:44:55,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:44:55,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:44:55,228 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:44:55,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:44:55,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:44:55,229 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2023-11-26 11:44:55,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:44:55,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:44:55,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:44:55,534 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:44:55,535 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:44:55,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive-simple/fibo_7-2.c [2023-11-26 11:44:58,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:59,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:59,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2023-11-26 11:44:59,088 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/data/d015a1637/a81310ff7f224790bba30063e4a4d30c/FLAGd4ecca23d [2023-11-26 11:44:59,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/data/d015a1637/a81310ff7f224790bba30063e4a4d30c [2023-11-26 11:44:59,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:59,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:59,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:59,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:59,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:59,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698ef5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59, skipping insertion in model container [2023-11-26 11:44:59,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,152 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:59,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:59,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:59,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:59,387 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:59,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59 WrapperNode [2023-11-26 11:44:59,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:59,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:59,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:59,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:59,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,420 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-26 11:44:59,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:59,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:59,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:59,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:59,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,455 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]. [2023-11-26 11:44:59,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:59,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:59,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:59,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:59,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (1/1) ... [2023-11-26 11:44:59,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:59,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:59,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:59,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:44:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:44:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-11-26 11:44:59,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-11-26 11:44:59,620 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:59,623 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:59,809 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:59,833 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:59,833 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:44:59,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:59 BoogieIcfgContainer [2023-11-26 11:44:59,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:59,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:44:59,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:44:59,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:44:59,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:44:59" (1/3) ... [2023-11-26 11:44:59,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7ada7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:59, skipping insertion in model container [2023-11-26 11:44:59,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:59" (2/3) ... [2023-11-26 11:44:59,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7ada7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:59, skipping insertion in model container [2023-11-26 11:44:59,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:59" (3/3) ... [2023-11-26 11:44:59,844 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2023-11-26 11:44:59,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:44:59,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 11:44:59,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:44:59,923 INFO L357 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, mHoare=true, 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;@574752a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:44:59,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:44:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:44:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:44:59,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:44:59,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:44:59,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:44:59,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1905229472, now seen corresponding path program 1 times [2023-11-26 11:44:59,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:59,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789891154] [2023-11-26 11:44:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:00,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789891154] [2023-11-26 11:45:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789891154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:00,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:00,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145292296] [2023-11-26 11:45:00,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:00,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:00,200 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-26 11:45:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:00,250 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-26 11:45:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2023-11-26 11:45:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:00,262 INFO L225 Difference]: With dead ends: 31 [2023-11-26 11:45:00,262 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 11:45:00,265 INFO L412 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 [2023-11-26 11:45:00,269 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:00,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 11:45:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-11-26 11:45:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-11-26 11:45:00,312 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 6 [2023-11-26 11:45:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:00,312 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-11-26 11:45:00,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-26 11:45:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-26 11:45:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:45:00,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:00,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:00,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:00,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1067428573, now seen corresponding path program 1 times [2023-11-26 11:45:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52275068] [2023-11-26 11:45:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:00,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52275068] [2023-11-26 11:45:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52275068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:00,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:00,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838553125] [2023-11-26 11:45:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:00,401 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.0) 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) [2023-11-26 11:45:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:00,515 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-11-26 11:45:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:00,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) 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 [2023-11-26 11:45:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:00,518 INFO L225 Difference]: With dead ends: 21 [2023-11-26 11:45:00,518 INFO L226 Difference]: Without dead ends: 19 [2023-11-26 11:45:00,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:00,520 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:00,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 19 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:00,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-26 11:45:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-26 11:45:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-26 11:45:00,529 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 7 [2023-11-26 11:45:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:00,530 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-26 11:45:00,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) 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) [2023-11-26 11:45:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-26 11:45:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:45:00,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:00,532 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:00,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash 803661136, now seen corresponding path program 1 times [2023-11-26 11:45:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:00,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776661138] [2023-11-26 11:45:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:00,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:45:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:45:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776661138] [2023-11-26 11:45:00,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776661138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:00,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125611404] [2023-11-26 11:45:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:00,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:00,890 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-26 11:45:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:00,935 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2023-11-26 11:45:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 22 [2023-11-26 11:45:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:00,937 INFO L225 Difference]: With dead ends: 35 [2023-11-26 11:45:00,937 INFO L226 Difference]: Without dead ends: 33 [2023-11-26 11:45:00,938 INFO L412 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 [2023-11-26 11:45:00,939 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:00,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-26 11:45:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-11-26 11:45:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 11:45:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-11-26 11:45:00,951 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2023-11-26 11:45:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:00,951 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-11-26 11:45:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-26 11:45:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-11-26 11:45:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 11:45:00,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:00,954 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:00,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:00,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:00,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash -844470953, now seen corresponding path program 1 times [2023-11-26 11:45:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355816728] [2023-11-26 11:45:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:00,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:45:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:45:01,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355816728] [2023-11-26 11:45:01,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355816728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:01,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772547517] [2023-11-26 11:45:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:01,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:01,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:01,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:01,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:01,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:45:01,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:01,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:45:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772547517] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:01,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-11-26 11:45:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219815162] [2023-11-26 11:45:01,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:45:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:45:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:45:01,580 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:45:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:02,052 INFO L93 Difference]: Finished difference Result 125 states and 171 transitions. [2023-11-26 11:45:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:45:02,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 23 [2023-11-26 11:45:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:02,061 INFO L225 Difference]: With dead ends: 125 [2023-11-26 11:45:02,062 INFO L226 Difference]: Without dead ends: 92 [2023-11-26 11:45:02,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:45:02,074 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 126 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:02,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 138 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-26 11:45:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2023-11-26 11:45:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 63 states have internal predecessors, (68), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-26 11:45:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2023-11-26 11:45:02,131 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 23 [2023-11-26 11:45:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:02,131 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2023-11-26 11:45:02,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:45:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2023-11-26 11:45:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:45:02,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:02,134 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:02,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:02,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-26 11:45:02,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:02,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2139513579, now seen corresponding path program 2 times [2023-11-26 11:45:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483894956] [2023-11-26 11:45:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:45:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:45:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:45:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483894956] [2023-11-26 11:45:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483894956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516521736] [2023-11-26 11:45:02,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:02,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:02,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:02,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:02,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:02,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:02,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:02,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:02,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:45:02,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516521736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:45:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120741578] [2023-11-26 11:45:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:02,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:02,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:45:02,702 INFO L87 Difference]: Start difference. First operand 80 states and 111 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:02,744 INFO L93 Difference]: Finished difference Result 101 states and 140 transitions. [2023-11-26 11:45:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:02,745 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-26 11:45:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:02,748 INFO L225 Difference]: With dead ends: 101 [2023-11-26 11:45:02,748 INFO L226 Difference]: Without dead ends: 100 [2023-11-26 11:45:02,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:45:02,750 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 53 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-26 11:45:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2023-11-26 11:45:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 66 states have (on average 1.106060606060606) internal successors, (73), 67 states have internal predecessors, (73), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2023-11-26 11:45:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 123 transitions. [2023-11-26 11:45:02,781 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 123 transitions. Word has length 29 [2023-11-26 11:45:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 123 transitions. [2023-11-26 11:45:02,782 INFO L496 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 123 transitions. [2023-11-26 11:45:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:45:02,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:02,784 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:02,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:02,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1900411582, now seen corresponding path program 1 times [2023-11-26 11:45:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:02,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194249013] [2023-11-26 11:45:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:45:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:45:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 11:45:03,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194249013] [2023-11-26 11:45:03,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194249013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020315345] [2023-11-26 11:45:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:03,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:03,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:03,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:03,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:03,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:03,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:03,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:45:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020315345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:03,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-26 11:45:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264179192] [2023-11-26 11:45:03,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:03,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:45:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:45:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:45:03,534 INFO L87 Difference]: Start difference. First operand 86 states and 123 transitions. Second operand has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:45:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:04,371 INFO L93 Difference]: Finished difference Result 292 states and 458 transitions. [2023-11-26 11:45:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:45:04,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-11-26 11:45:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:04,378 INFO L225 Difference]: With dead ends: 292 [2023-11-26 11:45:04,379 INFO L226 Difference]: Without dead ends: 214 [2023-11-26 11:45:04,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:45:04,384 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 137 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:04,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 297 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:45:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-26 11:45:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 174. [2023-11-26 11:45:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 136 states have (on average 1.0955882352941178) internal successors, (149), 136 states have internal predecessors, (149), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2023-11-26 11:45:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 254 transitions. [2023-11-26 11:45:04,439 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 254 transitions. Word has length 30 [2023-11-26 11:45:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:04,439 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 254 transitions. [2023-11-26 11:45:04,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:45:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 254 transitions. [2023-11-26 11:45:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:45:04,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:04,443 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:04,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:04,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:04,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1808746357, now seen corresponding path program 1 times [2023-11-26 11:45:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100022320] [2023-11-26 11:45:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:45:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:45:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-26 11:45:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100022320] [2023-11-26 11:45:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100022320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:04,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:04,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324850300] [2023-11-26 11:45:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:04,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:04,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:04,757 INFO L87 Difference]: Start difference. First operand 174 states and 254 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:04,810 INFO L93 Difference]: Finished difference Result 190 states and 276 transitions. [2023-11-26 11:45:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:04,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2023-11-26 11:45:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:04,814 INFO L225 Difference]: With dead ends: 190 [2023-11-26 11:45:04,814 INFO L226 Difference]: Without dead ends: 189 [2023-11-26 11:45:04,815 INFO L412 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 [2023-11-26 11:45:04,816 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:04,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-26 11:45:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2023-11-26 11:45:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 142 states have (on average 1.091549295774648) internal successors, (155), 141 states have internal predecessors, (155), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2023-11-26 11:45:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 267 transitions. [2023-11-26 11:45:04,849 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 267 transitions. Word has length 49 [2023-11-26 11:45:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:04,849 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 267 transitions. [2023-11-26 11:45:04,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:45:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 267 transitions. [2023-11-26 11:45:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:45:04,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:04,857 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:45:04,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:04,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1946779806, now seen corresponding path program 1 times [2023-11-26 11:45:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087852564] [2023-11-26 11:45:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:45:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:45:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:45:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-26 11:45:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087852564] [2023-11-26 11:45:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087852564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868654772] [2023-11-26 11:45:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:05,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:05,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:05,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:05,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 11:45:05,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 113 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-26 11:45:05,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 34 proven. 168 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-26 11:45:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868654772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:05,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:05,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 22 [2023-11-26 11:45:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560403263] [2023-11-26 11:45:05,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:05,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:45:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:05,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:45:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:45:05,587 INFO L87 Difference]: Start difference. First operand 181 states and 267 transitions. Second operand has 22 states, 20 states have (on average 3.7) internal successors, (74), 16 states have internal predecessors, (74), 11 states have call successors, (17), 8 states have call predecessors, (17), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:45:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:06,117 INFO L93 Difference]: Finished difference Result 485 states and 764 transitions. [2023-11-26 11:45:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:45:06,118 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 16 states have internal predecessors, (74), 11 states have call successors, (17), 8 states have call predecessors, (17), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 80 [2023-11-26 11:45:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:06,121 INFO L225 Difference]: With dead ends: 485 [2023-11-26 11:45:06,122 INFO L226 Difference]: Without dead ends: 318 [2023-11-26 11:45:06,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:45:06,126 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 230 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:06,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 300 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-26 11:45:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 285. [2023-11-26 11:45:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 225 states have (on average 1.0933333333333333) internal successors, (246), 222 states have internal predecessors, (246), 36 states have call successors, (36), 10 states have call predecessors, (36), 22 states have return successors, (124), 52 states have call predecessors, (124), 35 states have call successors, (124) [2023-11-26 11:45:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 406 transitions. [2023-11-26 11:45:06,170 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 406 transitions. Word has length 80 [2023-11-26 11:45:06,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:06,171 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 406 transitions. [2023-11-26 11:45:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 16 states have internal predecessors, (74), 11 states have call successors, (17), 8 states have call predecessors, (17), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:45:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 406 transitions. [2023-11-26 11:45:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-26 11:45:06,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:06,173 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:06,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:06,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:06,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:06,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1748312488, now seen corresponding path program 2 times [2023-11-26 11:45:06,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:06,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34861330] [2023-11-26 11:45:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:06,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:06,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:45:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:45:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:45:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-26 11:45:06,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34861330] [2023-11-26 11:45:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34861330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549079060] [2023-11-26 11:45:06,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:06,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:06,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:06,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:06,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:45:06,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:06,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:06,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:45:06,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-26 11:45:06,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-26 11:45:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549079060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:06,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:06,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 11:45:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706721837] [2023-11-26 11:45:06,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:06,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:45:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:45:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:45:06,643 INFO L87 Difference]: Start difference. First operand 285 states and 406 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:45:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:06,723 INFO L93 Difference]: Finished difference Result 308 states and 431 transitions. [2023-11-26 11:45:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:45:06,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2023-11-26 11:45:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:06,727 INFO L225 Difference]: With dead ends: 308 [2023-11-26 11:45:06,727 INFO L226 Difference]: Without dead ends: 307 [2023-11-26 11:45:06,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:45:06,729 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:06,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 97 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-26 11:45:06,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 285. [2023-11-26 11:45:06,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 225 states have (on average 1.0933333333333333) internal successors, (246), 222 states have internal predecessors, (246), 36 states have call successors, (36), 10 states have call predecessors, (36), 22 states have return successors, (124), 52 states have call predecessors, (124), 35 states have call successors, (124) [2023-11-26 11:45:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 406 transitions. [2023-11-26 11:45:06,767 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 406 transitions. Word has length 73 [2023-11-26 11:45:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:06,768 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 406 transitions. [2023-11-26 11:45:06,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:45:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 406 transitions. [2023-11-26 11:45:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 11:45:06,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:06,772 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:45:06,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:06,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:06,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:06,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1636887647, now seen corresponding path program 1 times [2023-11-26 11:45:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:06,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057275190] [2023-11-26 11:45:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:45:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:45:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:45:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 105 proven. 88 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:45:07,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:07,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057275190] [2023-11-26 11:45:07,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057275190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468784306] [2023-11-26 11:45:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:07,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:07,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:07,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:45:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:45:07,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 101 proven. 91 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:45:07,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 101 proven. 91 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:45:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468784306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:07,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 22 [2023-11-26 11:45:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324574011] [2023-11-26 11:45:07,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:45:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:45:07,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:45:07,783 INFO L87 Difference]: Start difference. First operand 285 states and 406 transitions. Second operand has 22 states, 21 states have (on average 3.238095238095238) internal successors, (68), 16 states have internal predecessors, (68), 10 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:45:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:08,331 INFO L93 Difference]: Finished difference Result 436 states and 627 transitions. [2023-11-26 11:45:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-26 11:45:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.238095238095238) internal successors, (68), 16 states have internal predecessors, (68), 10 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2023-11-26 11:45:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:08,333 INFO L225 Difference]: With dead ends: 436 [2023-11-26 11:45:08,333 INFO L226 Difference]: Without dead ends: 159 [2023-11-26 11:45:08,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 144 SyntacticMatches, 14 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2023-11-26 11:45:08,339 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 325 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:08,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 108 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:45:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-26 11:45:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2023-11-26 11:45:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 117 states have internal predecessors, (131), 19 states have call successors, (19), 12 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 168 transitions. [2023-11-26 11:45:08,357 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 168 transitions. Word has length 74 [2023-11-26 11:45:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:08,359 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 168 transitions. [2023-11-26 11:45:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.238095238095238) internal successors, (68), 16 states have internal predecessors, (68), 10 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:45:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 168 transitions. [2023-11-26 11:45:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:45:08,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:08,360 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:45:08,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:08,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:08,577 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:08,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1948309259, now seen corresponding path program 2 times [2023-11-26 11:45:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:08,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025556015] [2023-11-26 11:45:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:45:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:45:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-26 11:45:08,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:08,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025556015] [2023-11-26 11:45:08,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025556015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:08,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747205102] [2023-11-26 11:45:08,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:45:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:08,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:08,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:45:08,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:45:08,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:08,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:45:08,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-26 11:45:08,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-26 11:45:09,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747205102] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:09,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:09,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-11-26 11:45:09,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863341191] [2023-11-26 11:45:09,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:45:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:45:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:45:09,143 INFO L87 Difference]: Start difference. First operand 148 states and 168 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:45:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:09,230 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2023-11-26 11:45:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:45:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2023-11-26 11:45:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:09,233 INFO L225 Difference]: With dead ends: 150 [2023-11-26 11:45:09,233 INFO L226 Difference]: Without dead ends: 149 [2023-11-26 11:45:09,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:45:09,234 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:09,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-26 11:45:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2023-11-26 11:45:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.0854700854700854) internal successors, (127), 117 states have internal predecessors, (127), 19 states have call successors, (19), 12 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2023-11-26 11:45:09,252 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 68 [2023-11-26 11:45:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:09,253 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2023-11-26 11:45:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:45:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2023-11-26 11:45:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-26 11:45:09,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:09,254 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1] [2023-11-26 11:45:09,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:09,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:45:09,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:09,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1096044387, now seen corresponding path program 3 times [2023-11-26 11:45:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411562414] [2023-11-26 11:45:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:45:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-26 11:45:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-26 11:45:09,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411562414] [2023-11-26 11:45:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411562414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583871557] [2023-11-26 11:45:09,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:45:09,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:09,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:09,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:45:09,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-26 11:45:09,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:09,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:09,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-26 11:45:10,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-26 11:45:10,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583871557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:10,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:10,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2023-11-26 11:45:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129998976] [2023-11-26 11:45:10,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:45:10,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:45:10,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:45:10,234 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:45:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:10,314 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2023-11-26 11:45:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:45:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 100 [2023-11-26 11:45:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:10,317 INFO L225 Difference]: With dead ends: 148 [2023-11-26 11:45:10,317 INFO L226 Difference]: Without dead ends: 147 [2023-11-26 11:45:10,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 214 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:45:10,318 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:10,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-26 11:45:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-26 11:45:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 116 states have internal predecessors, (121), 19 states have call successors, (19), 12 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2023-11-26 11:45:10,331 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 100 [2023-11-26 11:45:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:10,332 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2023-11-26 11:45:10,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 15 states have internal predecessors, (47), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 11:45:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2023-11-26 11:45:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-26 11:45:10,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:10,334 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1] [2023-11-26 11:45:10,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 11:45:10,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:45:10,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:10,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash -187725536, now seen corresponding path program 3 times [2023-11-26 11:45:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228276671] [2023-11-26 11:45:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:45:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:45:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-26 11:45:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-11-26 11:45:11,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:11,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228276671] [2023-11-26 11:45:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228276671] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063466177] [2023-11-26 11:45:11,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:45:11,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:11,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:11,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:11,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:45:11,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-26 11:45:11,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:11,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-26 11:45:11,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-11-26 11:45:11,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2023-11-26 11:45:13,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063466177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:13,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2023-11-26 11:45:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062693695] [2023-11-26 11:45:13,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:13,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-26 11:45:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-26 11:45:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-11-26 11:45:13,397 INFO L87 Difference]: Start difference. First operand 147 states and 158 transitions. Second operand has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 27 states have internal predecessors, (70), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-26 11:45:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:13,492 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2023-11-26 11:45:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:45:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 27 states have internal predecessors, (70), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 154 [2023-11-26 11:45:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:13,495 INFO L225 Difference]: With dead ends: 148 [2023-11-26 11:45:13,495 INFO L226 Difference]: Without dead ends: 147 [2023-11-26 11:45:13,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 322 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:45:13,496 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:13,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 194 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-26 11:45:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-26 11:45:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 116 states have internal predecessors, (118), 19 states have call successors, (19), 12 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 11:45:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2023-11-26 11:45:13,509 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 154 [2023-11-26 11:45:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:13,509 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2023-11-26 11:45:13,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 27 states have internal predecessors, (70), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-26 11:45:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2023-11-26 11:45:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-26 11:45:13,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:13,516 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1] [2023-11-26 11:45:13,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:13,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:45:13,722 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 11:45:13,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash -415234550, now seen corresponding path program 4 times [2023-11-26 11:45:13,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:13,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265767066] [2023-11-26 11:45:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:45:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:45:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-26 11:45:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:45:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-26 11:45:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:45:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:45:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:45:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:45:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:45:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2023-11-26 11:45:18,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:18,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265767066] [2023-11-26 11:45:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265767066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:18,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242227388] [2023-11-26 11:45:18,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:45:18,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:18,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:18,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:18,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:45:18,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:45:18,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:45:18,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-26 11:45:18,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2023-11-26 11:45:18,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2023-11-26 11:45:29,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242227388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:29,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:45:29,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2023-11-26 11:45:29,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011812205] [2023-11-26 11:45:29,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:29,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-26 11:45:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-26 11:45:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2023-11-26 11:45:29,270 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 41 states, 40 states have (on average 2.6) internal successors, (104), 41 states have internal predecessors, (104), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-26 11:45:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:29,365 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2023-11-26 11:45:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:45:29,366 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 41 states have internal predecessors, (104), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 397 [2023-11-26 11:45:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:29,367 INFO L225 Difference]: With dead ends: 147 [2023-11-26 11:45:29,367 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:45:29,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 852 SyntacticMatches, 62 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2023-11-26 11:45:29,369 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:29,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:45:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:45:29,370 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) [2023-11-26 11:45:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:45:29,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 397 [2023-11-26 11:45:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:29,372 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:45:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 41 states have internal predecessors, (104), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-26 11:45:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:45:29,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:45:29,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-26 11:45:29,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-26 11:45:29,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-26 11:45:29,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-26 11:45:29,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-26 11:45:29,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-26 11:45:29,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:45:29,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 11:45:30,130 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 11:45:30,130 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2023-11-26 11:45:30,130 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (= 7 |ULTIMATE.start_main_~x~0#1|) [2023-11-26 11:45:30,130 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-11-26 11:45:30,130 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2023-11-26 11:45:30,130 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 11:45:30,130 INFO L899 garLoopResultBuilder]: For program point fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,131 INFO L899 garLoopResultBuilder]: For program point fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,131 INFO L899 garLoopResultBuilder]: For program point fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,131 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2023-11-26 11:45:30,131 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,131 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,131 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (or (= fibo_~n |fibo_#in~n|) (< 7 |fibo_#in~n|)) (or (= fibo_~n 2) (< 2 |fibo_#in~n|))) [2023-11-26 11:45:30,131 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,132 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 15) the Hoare annotation is: true [2023-11-26 11:45:30,132 INFO L899 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,132 INFO L899 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,132 INFO L895 garLoopResultBuilder]: At program point L13-6(line 13) the Hoare annotation is: (let ((.cse0 (= |fibo_#t~ret4| 1)) (.cse1 (= fibo_~n |fibo_#in~n|)) (.cse2 (<= 2 |fibo_#t~ret4|))) (and (or (< 3 |fibo_#in~n|) (and .cse0 (= fibo_~n 3)) (< |fibo_#in~n| 3)) (or (< |fibo_#in~n| 4) (< 4 |fibo_#in~n|) (and (= |fibo_#t~ret4| 2) .cse1)) (or (and (= 2 |fibo_#in~n|) (= fibo_~n 2) .cse0) (< 2 |fibo_#in~n|)) (or (and .cse1 .cse2 (<= |fibo_#t~ret4| 3)) (< |fibo_#in~n| 5) (< 5 |fibo_#in~n|)) (or (< |fibo_#in~n| 7) (< 7 |fibo_#in~n|) (and (<= |fibo_#t~ret4| 8) .cse1 .cse2)) (or (< |fibo_#in~n| 6) (and (<= |fibo_#t~ret4| 5) .cse1 .cse2) (< 6 |fibo_#in~n|)))) [2023-11-26 11:45:30,132 INFO L899 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,132 INFO L899 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,132 INFO L899 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,133 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2023-11-26 11:45:30,133 INFO L899 garLoopResultBuilder]: For program point fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,133 INFO L899 garLoopResultBuilder]: For program point fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,133 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2023-11-26 11:45:30,133 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2023-11-26 11:45:30,133 INFO L899 garLoopResultBuilder]: For program point fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2023-11-26 11:45:30,139 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1] [2023-11-26 11:45:30,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:45:30,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:45:30 BoogieIcfgContainer [2023-11-26 11:45:30,147 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:45:30,148 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:45:30,148 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:45:30,148 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:45:30,149 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:59" (3/4) ... [2023-11-26 11:45:30,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:45:30,155 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2023-11-26 11:45:30,162 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-26 11:45:30,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:45:30,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:45:30,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:45:30,264 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:45:30,265 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:45:30,265 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:45:30,266 INFO L158 Benchmark]: Toolchain (without parser) took 31148.87ms. Allocated memory was 161.5MB in the beginning and 446.7MB in the end (delta: 285.2MB). Free memory was 131.9MB in the beginning and 177.6MB in the end (delta: -45.8MB). Peak memory consumption was 241.0MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,266 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory was 86.1MB in the beginning and 85.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:45:30,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.30ms. Allocated memory is still 161.5MB. Free memory was 131.5MB in the beginning and 121.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.06ms. Allocated memory is still 161.5MB. Free memory was 121.4MB in the beginning and 120.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,267 INFO L158 Benchmark]: Boogie Preprocessor took 42.50ms. Allocated memory is still 161.5MB. Free memory was 120.1MB in the beginning and 118.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,268 INFO L158 Benchmark]: RCFGBuilder took 369.11ms. Allocated memory is still 161.5MB. Free memory was 118.3MB in the beginning and 107.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,268 INFO L158 Benchmark]: TraceAbstraction took 30310.18ms. Allocated memory was 161.5MB in the beginning and 446.7MB in the end (delta: 285.2MB). Free memory was 107.2MB in the beginning and 181.8MB in the end (delta: -74.7MB). Peak memory consumption was 211.6MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,269 INFO L158 Benchmark]: Witness Printer took 117.31ms. Allocated memory is still 446.7MB. Free memory was 181.8MB in the beginning and 177.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:45:30,271 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory was 86.1MB in the beginning and 85.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.30ms. Allocated memory is still 161.5MB. Free memory was 131.5MB in the beginning and 121.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.06ms. Allocated memory is still 161.5MB. Free memory was 121.4MB in the beginning and 120.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.50ms. Allocated memory is still 161.5MB. Free memory was 120.1MB in the beginning and 118.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 369.11ms. Allocated memory is still 161.5MB. Free memory was 118.3MB in the beginning and 107.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 30310.18ms. Allocated memory was 161.5MB in the beginning and 446.7MB in the end (delta: 285.2MB). Free memory was 107.2MB in the beginning and 181.8MB in the end (delta: -74.7MB). Peak memory consumption was 211.6MB. Max. memory is 16.1GB. * Witness Printer took 117.31ms. Allocated memory is still 446.7MB. Free memory was 181.8MB in the beginning and 177.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: 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 2 procedures, 27 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 30.2s, OverallIterations: 14, TraceHistogramMax: 41, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 927 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 903 mSDsluCounter, 1789 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1472 mSDsCounter, 225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2497 IncrementalHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 225 mSolverCounterUnsat, 317 mSDtfsCounter, 2497 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2462 GetRequests, 2109 SyntacticMatches, 110 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3772 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred in iteration=8, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 148 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 256 PreInvPairs, 275 NumberOfFragments, 113 HoareAnnotationTreeSize, 256 FomulaSimplifications, 1142 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 744 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 22.4s InterpolantComputationTime, 2140 NumberOfCodeBlocks, 2071 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3106 ConstructedInterpolants, 0 QuantifiedInterpolants, 6829 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1981 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 33 InterpolantComputations, 5 PerfectInterpolantSequences, 18677/22961 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:45:30,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2827c890-01eb-4ec9-bfa0-f1935e91e872/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE