./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 19:53:23,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:53:23,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:53:23,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:53:23,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:53:23,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:53:23,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:53:23,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:53:23,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:53:23,940 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:53:23,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:53:23,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:53:23,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:53:23,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:53:23,941 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:53:23,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:53:23,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:53:23,941 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:53:23,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:53:23,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:53:23,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:53:23,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:53:23,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:53:23,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:53:23,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:53:23,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:53:23,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:53:23,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:53:23,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:53:23,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:53:23,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:53:23,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:53:23,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:53:23,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:53:23,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:53:23,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:53:23,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:53:23,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:53:23,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:53:23,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:53:23,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:53:23,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:53:23,950 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:/storage/repos/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:53:24,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:53:24,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:53:24,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:53:24,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:53:24,237 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:53:24,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-09-12 19:53:25,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:53:25,763 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:53:25,764 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-09-12 19:53:25,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7f4c3ba1e/00b60bdc33cb458f9cac3b7a8d9fd541/FLAG93c39883b [2024-09-12 19:53:26,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7f4c3ba1e/00b60bdc33cb458f9cac3b7a8d9fd541 [2024-09-12 19:53:26,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:53:26,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:53:26,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:53:26,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:53:26,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:53:26,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e108cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26, skipping insertion in model container [2024-09-12 19:53:26,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:53:26,302 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2024-09-12 19:53:26,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:53:26,316 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:53:26,328 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2024-09-12 19:53:26,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:53:26,339 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:53:26,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26 WrapperNode [2024-09-12 19:53:26,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:53:26,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:53:26,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:53:26,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:53:26,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,354 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:53:26,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:53:26,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:53:26,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:53:26,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:53:26,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,378 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 19:53:26,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:53:26,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:53:26,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:53:26,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:53:26,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (1/1) ... [2024-09-12 19:53:26,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:53:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:26,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 19:53:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 19:53:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:53:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:53:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:53:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:53:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-12 19:53:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-12 19:53:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-12 19:53:26,457 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-12 19:53:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:53:26,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:53:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:53:26,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:53:26,511 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:53:26,512 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:53:26,711 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-09-12 19:53:26,711 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:53:26,739 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:53:26,739 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 19:53:26,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:53:26 BoogieIcfgContainer [2024-09-12 19:53:26,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:53:26,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:53:26,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:53:26,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:53:26,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:53:26" (1/3) ... [2024-09-12 19:53:26,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e16b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:53:26, skipping insertion in model container [2024-09-12 19:53:26,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:26" (2/3) ... [2024-09-12 19:53:26,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e16b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:53:26, skipping insertion in model container [2024-09-12 19:53:26,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:53:26" (3/3) ... [2024-09-12 19:53:26,748 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2024-09-12 19:53:26,761 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:53:26,761 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-09-12 19:53:26,804 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:53:26,810 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@715b2234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:53:26,810 INFO L337 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-09-12 19:53:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 44 states have internal predecessors, (49), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:53:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 19:53:26,817 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:26,817 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:26,818 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:26,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -373964005, now seen corresponding path program 1 times [2024-09-12 19:53:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:26,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554910880] [2024-09-12 19:53:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:26,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:26,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:26,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554910880] [2024-09-12 19:53:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554910880] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:26,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 19:53:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156029941] [2024-09-12 19:53:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:26,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 19:53:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 19:53:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:53:26,962 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 44 states have internal predecessors, (49), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,002 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2024-09-12 19:53:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 19:53:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 19:53:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,010 INFO L225 Difference]: With dead ends: 62 [2024-09-12 19:53:27,010 INFO L226 Difference]: Without dead ends: 52 [2024-09-12 19:53:27,013 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:53:27,016 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 96 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-12 19:53:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-12 19:53:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 39 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:53:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-09-12 19:53:27,054 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 10 [2024-09-12 19:53:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,054 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-09-12 19:53:27,054 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-09-12 19:53:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 19:53:27,056 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,056 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,056 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:53:27,057 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1292017820, now seen corresponding path program 1 times [2024-09-12 19:53:27,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439759588] [2024-09-12 19:53:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:27,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:27,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439759588] [2024-09-12 19:53:27,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439759588] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:27,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:27,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401044244] [2024-09-12 19:53:27,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:27,127 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,128 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,233 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2024-09-12 19:53:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 19:53:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,235 INFO L225 Difference]: With dead ends: 71 [2024-09-12 19:53:27,235 INFO L226 Difference]: Without dead ends: 69 [2024-09-12 19:53:27,236 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:53:27,236 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 181 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-12 19:53:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2024-09-12 19:53:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 51 states have internal predecessors, (59), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 19:53:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2024-09-12 19:53:27,249 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 11 [2024-09-12 19:53:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,249 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2024-09-12 19:53:27,249 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2024-09-12 19:53:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 19:53:27,250 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,250 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 19:53:27,251 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash 371226026, now seen corresponding path program 1 times [2024-09-12 19:53:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828969009] [2024-09-12 19:53:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828969009] [2024-09-12 19:53:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828969009] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:27,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:27,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:53:27,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609265672] [2024-09-12 19:53:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:27,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:27,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,395 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:27,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,452 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2024-09-12 19:53:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:27,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 13 [2024-09-12 19:53:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,453 INFO L225 Difference]: With dead ends: 77 [2024-09-12 19:53:27,453 INFO L226 Difference]: Without dead ends: 71 [2024-09-12 19:53:27,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,454 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 16 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 152 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-12 19:53:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-09-12 19:53:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 19:53:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-09-12 19:53:27,465 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 13 [2024-09-12 19:53:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,466 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-09-12 19:53:27,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:27,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-09-12 19:53:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 19:53:27,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,467 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,467 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 19:53:27,467 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1008204599, now seen corresponding path program 1 times [2024-09-12 19:53:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370856361] [2024-09-12 19:53:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:27,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370856361] [2024-09-12 19:53:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370856361] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:27,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:27,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:53:27,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914681918] [2024-09-12 19:53:27,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:27,522 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,523 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,574 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-09-12 19:53:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 14 [2024-09-12 19:53:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,575 INFO L225 Difference]: With dead ends: 73 [2024-09-12 19:53:27,575 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 19:53:27,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,576 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,577 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 148 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 19:53:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-12 19:53:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 51 states have internal predecessors, (57), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 19:53:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-09-12 19:53:27,587 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 14 [2024-09-12 19:53:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,587 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-09-12 19:53:27,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:27,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-09-12 19:53:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 19:53:27,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,588 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,588 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 19:53:27,589 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1677154791, now seen corresponding path program 1 times [2024-09-12 19:53:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028070229] [2024-09-12 19:53:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:27,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:27,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028070229] [2024-09-12 19:53:27,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028070229] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:27,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:27,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 19:53:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335885266] [2024-09-12 19:53:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:27,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 19:53:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 19:53:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:53:27,618 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,637 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2024-09-12 19:53:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 19:53:27,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 19:53:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,638 INFO L225 Difference]: With dead ends: 67 [2024-09-12 19:53:27,638 INFO L226 Difference]: Without dead ends: 65 [2024-09-12 19:53:27,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:53:27,639 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 11 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 84 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-12 19:53:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-09-12 19:53:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 49 states have internal predecessors, (55), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 19:53:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-12 19:53:27,659 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 16 [2024-09-12 19:53:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,660 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-12 19:53:27,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-12 19:53:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 19:53:27,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,661 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,661 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 19:53:27,662 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,662 INFO L85 PathProgramCache]: Analyzing trace with hash -452190908, now seen corresponding path program 1 times [2024-09-12 19:53:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705878625] [2024-09-12 19:53:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:27,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705878625] [2024-09-12 19:53:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705878625] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:27,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 19:53:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539642958] [2024-09-12 19:53:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:27,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:53:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:53:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:53:27,721 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,822 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-12 19:53:27,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:53:27,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 19:53:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,824 INFO L225 Difference]: With dead ends: 67 [2024-09-12 19:53:27,824 INFO L226 Difference]: Without dead ends: 63 [2024-09-12 19:53:27,825 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:27,825 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,826 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 129 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:27,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-12 19:53:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-09-12 19:53:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 19:53:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-12 19:53:27,837 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 17 [2024-09-12 19:53:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,837 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-12 19:53:27,837 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:27,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-12 19:53:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 19:53:27,838 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,838 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 19:53:27,839 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2127521631, now seen corresponding path program 1 times [2024-09-12 19:53:27,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37234958] [2024-09-12 19:53:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:53:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 19:53:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 19:53:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37234958] [2024-09-12 19:53:27,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37234958] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:27,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383969883] [2024-09-12 19:53:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:27,920 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,921 INFO L87 Difference]: Start difference. First operand 59 states and 68 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:27,958 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2024-09-12 19:53:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:27,958 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-09-12 19:53:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:27,960 INFO L225 Difference]: With dead ends: 83 [2024-09-12 19:53:27,960 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 19:53:27,960 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:27,961 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:27,961 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 172 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 19:53:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2024-09-12 19:53:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 57 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 19:53:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2024-09-12 19:53:27,979 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 26 [2024-09-12 19:53:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:27,979 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2024-09-12 19:53:27,980 INFO L475 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, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:27,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2024-09-12 19:53:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 19:53:27,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:27,981 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:27,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 19:53:27,981 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:27,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1539493548, now seen corresponding path program 1 times [2024-09-12 19:53:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792909462] [2024-09-12 19:53:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:53:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 19:53:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 19:53:28,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792909462] [2024-09-12 19:53:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792909462] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:28,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372460326] [2024-09-12 19:53:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:28,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:28,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:28,058 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 19:53:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 19:53:28,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:28,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:53:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372460326] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:28,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:53:28,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-09-12 19:53:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906794641] [2024-09-12 19:53:28,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:28,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 19:53:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 19:53:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:53:28,198 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:53:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:28,293 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2024-09-12 19:53:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:53:28,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2024-09-12 19:53:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:28,294 INFO L225 Difference]: With dead ends: 131 [2024-09-12 19:53:28,294 INFO L226 Difference]: Without dead ends: 72 [2024-09-12 19:53:28,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:53:28,295 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 39 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:28,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 184 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-12 19:53:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2024-09-12 19:53:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 52 states have internal predecessors, (58), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-12 19:53:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2024-09-12 19:53:28,305 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 27 [2024-09-12 19:53:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:28,306 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2024-09-12 19:53:28,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 19:53:28,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2024-09-12 19:53:28,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 19:53:28,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:28,307 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:28,320 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 19:53:28,511 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:28,512 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:28,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1428973281, now seen corresponding path program 1 times [2024-09-12 19:53:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:28,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278514230] [2024-09-12 19:53:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:53:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 19:53:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 19:53:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278514230] [2024-09-12 19:53:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278514230] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649931094] [2024-09-12 19:53:28,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:28,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:28,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:28,605 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:28,637 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2024-09-12 19:53:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:28,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-09-12 19:53:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:28,639 INFO L225 Difference]: With dead ends: 92 [2024-09-12 19:53:28,639 INFO L226 Difference]: Without dead ends: 90 [2024-09-12 19:53:28,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:28,640 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 4 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:28,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 132 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-12 19:53:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2024-09-12 19:53:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 62 states have internal predecessors, (68), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (22), 13 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-12 19:53:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2024-09-12 19:53:28,652 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 28 [2024-09-12 19:53:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:28,652 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2024-09-12 19:53:28,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:28,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2024-09-12 19:53:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 19:53:28,654 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:28,654 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:28,654 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 19:53:28,654 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:28,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2001771443, now seen corresponding path program 1 times [2024-09-12 19:53:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:28,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571709128] [2024-09-12 19:53:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:53:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 19:53:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 19:53:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:28,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571709128] [2024-09-12 19:53:28,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571709128] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:28,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:28,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797316749] [2024-09-12 19:53:28,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:28,728 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:28,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:28,729 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:28,767 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2024-09-12 19:53:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:28,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-09-12 19:53:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:28,769 INFO L225 Difference]: With dead ends: 95 [2024-09-12 19:53:28,770 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 19:53:28,770 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:28,771 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:28,771 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 172 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 19:53:28,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-09-12 19:53:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 69 states have internal predecessors, (75), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (26), 15 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-12 19:53:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2024-09-12 19:53:28,792 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 32 [2024-09-12 19:53:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:28,792 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2024-09-12 19:53:28,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:28,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:28,793 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2024-09-12 19:53:28,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 19:53:28,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:28,796 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:28,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 19:53:28,796 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:28,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:28,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1913625316, now seen corresponding path program 1 times [2024-09-12 19:53:28,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:28,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432814252] [2024-09-12 19:53:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:53:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 19:53:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 19:53:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432814252] [2024-09-12 19:53:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432814252] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910361192] [2024-09-12 19:53:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:28,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:28,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:28,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:28,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 19:53:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:28,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 19:53:28,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:29,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:53:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910361192] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:29,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:29,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-09-12 19:53:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325909604] [2024-09-12 19:53:29,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:29,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 19:53:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 19:53:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-09-12 19:53:29,189 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:29,560 INFO L93 Difference]: Finished difference Result 222 states and 294 transitions. [2024-09-12 19:53:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 19:53:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 33 [2024-09-12 19:53:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:29,561 INFO L225 Difference]: With dead ends: 222 [2024-09-12 19:53:29,561 INFO L226 Difference]: Without dead ends: 144 [2024-09-12 19:53:29,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:53:29,563 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 132 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:29,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 773 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:53:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-12 19:53:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2024-09-12 19:53:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 102 states have internal predecessors, (112), 18 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (36), 19 states have call predecessors, (36), 17 states have call successors, (36) [2024-09-12 19:53:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 166 transitions. [2024-09-12 19:53:29,582 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 166 transitions. Word has length 33 [2024-09-12 19:53:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:29,582 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 166 transitions. [2024-09-12 19:53:29,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:29,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 166 transitions. [2024-09-12 19:53:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 19:53:29,583 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:29,584 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:29,601 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 19:53:29,784 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 19:53:29,785 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:29,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1804822488, now seen corresponding path program 2 times [2024-09-12 19:53:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:29,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627839951] [2024-09-12 19:53:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:29,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:29,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:29,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 19:53:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:53:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627839951] [2024-09-12 19:53:29,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627839951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162874391] [2024-09-12 19:53:29,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:29,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:29,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:29,864 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 19:53:29,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:29,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:29,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:53:29,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:53:29,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:53:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162874391] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:29,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:53:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 19:53:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23056766] [2024-09-12 19:53:29,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:29,939 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:29,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:29,940 INFO L87 Difference]: Start difference. First operand 130 states and 166 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:29,967 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2024-09-12 19:53:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2024-09-12 19:53:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:29,970 INFO L225 Difference]: With dead ends: 139 [2024-09-12 19:53:29,970 INFO L226 Difference]: Without dead ends: 138 [2024-09-12 19:53:29,970 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:29,971 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:29,971 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:29,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-12 19:53:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2024-09-12 19:53:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 100 states have (on average 1.16) internal successors, (116), 104 states have internal predecessors, (116), 18 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (36), 21 states have call predecessors, (36), 17 states have call successors, (36) [2024-09-12 19:53:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 170 transitions. [2024-09-12 19:53:30,003 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 170 transitions. Word has length 45 [2024-09-12 19:53:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:30,004 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 170 transitions. [2024-09-12 19:53:30,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:30,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 170 transitions. [2024-09-12 19:53:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 19:53:30,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:30,007 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:30,020 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:30,207 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 19:53:30,209 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:30,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 114922353, now seen corresponding path program 1 times [2024-09-12 19:53:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898674454] [2024-09-12 19:53:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:30,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:30,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:30,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 19:53:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:53:30,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898674454] [2024-09-12 19:53:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898674454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988459745] [2024-09-12 19:53:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:30,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:30,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:30,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:30,274 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 19:53:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:30,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 19:53:30,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:30,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:53:30,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988459745] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:30,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:30,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2024-09-12 19:53:30,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223387819] [2024-09-12 19:53:30,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:30,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 19:53:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 19:53:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:53:30,648 INFO L87 Difference]: Start difference. First operand 134 states and 170 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:31,221 INFO L93 Difference]: Finished difference Result 336 states and 438 transitions. [2024-09-12 19:53:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 19:53:31,221 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 46 [2024-09-12 19:53:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:31,223 INFO L225 Difference]: With dead ends: 336 [2024-09-12 19:53:31,223 INFO L226 Difference]: Without dead ends: 220 [2024-09-12 19:53:31,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2024-09-12 19:53:31,225 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 164 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:31,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1235 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:53:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-09-12 19:53:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 200. [2024-09-12 19:53:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 153 states have (on average 1.1568627450980393) internal successors, (177), 156 states have internal predecessors, (177), 27 states have call successors, (27), 12 states have call predecessors, (27), 15 states have return successors, (50), 31 states have call predecessors, (50), 26 states have call successors, (50) [2024-09-12 19:53:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 254 transitions. [2024-09-12 19:53:31,253 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 254 transitions. Word has length 46 [2024-09-12 19:53:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:31,253 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 254 transitions. [2024-09-12 19:53:31,254 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:31,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 254 transitions. [2024-09-12 19:53:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 19:53:31,255 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:31,255 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:31,267 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 19:53:31,458 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:31,459 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:31,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -840559882, now seen corresponding path program 1 times [2024-09-12 19:53:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962152437] [2024-09-12 19:53:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:31,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:31,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:53:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:31,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 19:53:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-12 19:53:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962152437] [2024-09-12 19:53:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962152437] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983187497] [2024-09-12 19:53:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:31,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:31,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:31,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:31,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 19:53:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:31,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 19:53:31,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:31,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:53:31,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983187497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:31,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:31,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2024-09-12 19:53:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850994954] [2024-09-12 19:53:31,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:31,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 19:53:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 19:53:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:53:31,996 INFO L87 Difference]: Start difference. First operand 200 states and 254 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (16), 9 states have call predecessors, (16), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 19:53:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:32,457 INFO L93 Difference]: Finished difference Result 421 states and 540 transitions. [2024-09-12 19:53:32,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 19:53:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (16), 9 states have call predecessors, (16), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2024-09-12 19:53:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:32,459 INFO L225 Difference]: With dead ends: 421 [2024-09-12 19:53:32,459 INFO L226 Difference]: Without dead ends: 245 [2024-09-12 19:53:32,461 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2024-09-12 19:53:32,461 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 230 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:32,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 960 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:53:32,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-12 19:53:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 222. [2024-09-12 19:53:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 171 states have (on average 1.152046783625731) internal successors, (197), 173 states have internal predecessors, (197), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (56), 35 states have call predecessors, (56), 29 states have call successors, (56) [2024-09-12 19:53:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 283 transitions. [2024-09-12 19:53:32,479 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 283 transitions. Word has length 63 [2024-09-12 19:53:32,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:32,479 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 283 transitions. [2024-09-12 19:53:32,480 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (16), 9 states have call predecessors, (16), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 19:53:32,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:32,480 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 283 transitions. [2024-09-12 19:53:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 19:53:32,481 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:32,481 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:32,493 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 19:53:32,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 19:53:32,685 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:32,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash 713734356, now seen corresponding path program 2 times [2024-09-12 19:53:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884443581] [2024-09-12 19:53:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:32,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:32,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:53:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:32,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 19:53:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-12 19:53:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884443581] [2024-09-12 19:53:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884443581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773511510] [2024-09-12 19:53:32,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:32,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:32,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:32,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:32,752 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 19:53:32,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:32,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:32,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:53:32,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-12 19:53:32,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:53:32,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773511510] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:32,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:53:32,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 19:53:32,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90328822] [2024-09-12 19:53:32,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:32,814 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:32,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:32,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:32,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:32,814 INFO L87 Difference]: Start difference. First operand 222 states and 283 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:32,849 INFO L93 Difference]: Finished difference Result 235 states and 303 transitions. [2024-09-12 19:53:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:32,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 63 [2024-09-12 19:53:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:32,851 INFO L225 Difference]: With dead ends: 235 [2024-09-12 19:53:32,851 INFO L226 Difference]: Without dead ends: 234 [2024-09-12 19:53:32,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:32,852 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:32,855 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-12 19:53:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2024-09-12 19:53:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 179 states have (on average 1.1452513966480447) internal successors, (205), 177 states have internal predecessors, (205), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (56), 39 states have call predecessors, (56), 29 states have call successors, (56) [2024-09-12 19:53:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 291 transitions. [2024-09-12 19:53:32,876 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 291 transitions. Word has length 63 [2024-09-12 19:53:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:32,877 INFO L474 AbstractCegarLoop]: Abstraction has 230 states and 291 transitions. [2024-09-12 19:53:32,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:32,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 291 transitions. [2024-09-12 19:53:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 19:53:32,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:32,878 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:32,892 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 19:53:33,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 19:53:33,079 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:33,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:33,079 INFO L85 PathProgramCache]: Analyzing trace with hash 650928655, now seen corresponding path program 1 times [2024-09-12 19:53:33,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:33,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701251650] [2024-09-12 19:53:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:53:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 19:53:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-12 19:53:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701251650] [2024-09-12 19:53:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701251650] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601844429] [2024-09-12 19:53:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:33,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:33,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:33,170 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 19:53:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 19:53:33,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-12 19:53:33,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:53:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601844429] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:53:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-09-12 19:53:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367570498] [2024-09-12 19:53:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:33,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:53:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:53:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:53:33,256 INFO L87 Difference]: Start difference. First operand 230 states and 291 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:33,307 INFO L93 Difference]: Finished difference Result 246 states and 312 transitions. [2024-09-12 19:53:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:53:33,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64 [2024-09-12 19:53:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:33,311 INFO L225 Difference]: With dead ends: 246 [2024-09-12 19:53:33,311 INFO L226 Difference]: Without dead ends: 245 [2024-09-12 19:53:33,311 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:53:33,312 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:33,312 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 134 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-12 19:53:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 226. [2024-09-12 19:53:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 176 states have (on average 1.1477272727272727) internal successors, (202), 174 states have internal predecessors, (202), 29 states have call successors, (29), 13 states have call predecessors, (29), 16 states have return successors, (53), 38 states have call predecessors, (53), 28 states have call successors, (53) [2024-09-12 19:53:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 284 transitions. [2024-09-12 19:53:33,338 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 284 transitions. Word has length 64 [2024-09-12 19:53:33,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:33,339 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 284 transitions. [2024-09-12 19:53:33,339 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:33,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 284 transitions. [2024-09-12 19:53:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 19:53:33,340 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:33,340 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:33,353 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 19:53:33,540 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 19:53:33,541 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:33,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -259670700, now seen corresponding path program 1 times [2024-09-12 19:53:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:33,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739412409] [2024-09-12 19:53:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 19:53:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-09-12 19:53:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739412409] [2024-09-12 19:53:33,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739412409] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:33,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:33,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091388225] [2024-09-12 19:53:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:33,615 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:33,616 INFO L87 Difference]: Start difference. First operand 226 states and 284 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:33,667 INFO L93 Difference]: Finished difference Result 236 states and 296 transitions. [2024-09-12 19:53:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:33,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2024-09-12 19:53:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:33,670 INFO L225 Difference]: With dead ends: 236 [2024-09-12 19:53:33,670 INFO L226 Difference]: Without dead ends: 235 [2024-09-12 19:53:33,670 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:33,670 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:33,671 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 161 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-12 19:53:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 220. [2024-09-12 19:53:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 172 states have (on average 1.1511627906976745) internal successors, (198), 169 states have internal predecessors, (198), 28 states have call successors, (28), 13 states have call predecessors, (28), 15 states have return successors, (45), 37 states have call predecessors, (45), 27 states have call successors, (45) [2024-09-12 19:53:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 271 transitions. [2024-09-12 19:53:33,689 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 271 transitions. Word has length 71 [2024-09-12 19:53:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:33,690 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 271 transitions. [2024-09-12 19:53:33,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:33,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 271 transitions. [2024-09-12 19:53:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 19:53:33,691 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:33,691 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:33,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-12 19:53:33,691 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:33,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 638042770, now seen corresponding path program 1 times [2024-09-12 19:53:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:33,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358188516] [2024-09-12 19:53:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:33,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:53:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 19:53:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-09-12 19:53:33,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358188516] [2024-09-12 19:53:33,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358188516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844620128] [2024-09-12 19:53:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:33,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:33,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:33,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:33,752 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 19:53:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:33,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 19:53:33,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 19:53:33,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 19:53:34,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844620128] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:34,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:34,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 23 [2024-09-12 19:53:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517436466] [2024-09-12 19:53:34,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:34,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 19:53:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 19:53:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:53:34,214 INFO L87 Difference]: Start difference. First operand 220 states and 271 transitions. Second operand has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 19:53:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:34,821 INFO L93 Difference]: Finished difference Result 598 states and 790 transitions. [2024-09-12 19:53:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 19:53:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2024-09-12 19:53:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:34,823 INFO L225 Difference]: With dead ends: 598 [2024-09-12 19:53:34,823 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 19:53:34,825 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 147 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 19:53:34,826 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 275 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:34,826 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 463 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 19:53:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 19:53:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 371. [2024-09-12 19:53:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 294 states have (on average 1.1428571428571428) internal successors, (336), 286 states have internal predecessors, (336), 47 states have call successors, (47), 20 states have call predecessors, (47), 25 states have return successors, (79), 64 states have call predecessors, (79), 46 states have call successors, (79) [2024-09-12 19:53:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 462 transitions. [2024-09-12 19:53:34,871 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 462 transitions. Word has length 82 [2024-09-12 19:53:34,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:34,871 INFO L474 AbstractCegarLoop]: Abstraction has 371 states and 462 transitions. [2024-09-12 19:53:34,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 19:53:34,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:34,872 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 462 transitions. [2024-09-12 19:53:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 19:53:34,872 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:34,873 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:34,887 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:35,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:35,074 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:35,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1879411977, now seen corresponding path program 1 times [2024-09-12 19:53:35,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240397738] [2024-09-12 19:53:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 19:53:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 19:53:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-12 19:53:35,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:35,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240397738] [2024-09-12 19:53:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240397738] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:35,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:35,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748771911] [2024-09-12 19:53:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:35,116 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:35,117 INFO L87 Difference]: Start difference. First operand 371 states and 462 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:53:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:35,169 INFO L93 Difference]: Finished difference Result 399 states and 501 transitions. [2024-09-12 19:53:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:35,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2024-09-12 19:53:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:35,172 INFO L225 Difference]: With dead ends: 399 [2024-09-12 19:53:35,172 INFO L226 Difference]: Without dead ends: 398 [2024-09-12 19:53:35,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:35,173 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:35,173 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 164 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-09-12 19:53:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 384. [2024-09-12 19:53:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 305 states have (on average 1.137704918032787) internal successors, (347), 296 states have internal predecessors, (347), 47 states have call successors, (47), 20 states have call predecessors, (47), 27 states have return successors, (88), 67 states have call predecessors, (88), 46 states have call successors, (88) [2024-09-12 19:53:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 482 transitions. [2024-09-12 19:53:35,217 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 482 transitions. Word has length 77 [2024-09-12 19:53:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:35,218 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 482 transitions. [2024-09-12 19:53:35,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:53:35,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 482 transitions. [2024-09-12 19:53:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 19:53:35,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:35,219 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:35,219 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-09-12 19:53:35,219 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:35,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2063033166, now seen corresponding path program 1 times [2024-09-12 19:53:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58764513] [2024-09-12 19:53:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 19:53:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 19:53:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-09-12 19:53:35,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:35,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58764513] [2024-09-12 19:53:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58764513] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:35,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 19:53:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551885570] [2024-09-12 19:53:35,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:35,319 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 19:53:35,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 19:53:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:53:35,320 INFO L87 Difference]: Start difference. First operand 384 states and 482 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:53:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:35,456 INFO L93 Difference]: Finished difference Result 486 states and 631 transitions. [2024-09-12 19:53:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:53:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 78 [2024-09-12 19:53:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:35,459 INFO L225 Difference]: With dead ends: 486 [2024-09-12 19:53:35,459 INFO L226 Difference]: Without dead ends: 485 [2024-09-12 19:53:35,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:53:35,459 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:35,460 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 302 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-09-12 19:53:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 410. [2024-09-12 19:53:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 324 states have (on average 1.1296296296296295) internal successors, (366), 317 states have internal predecessors, (366), 50 states have call successors, (50), 20 states have call predecessors, (50), 31 states have return successors, (113), 72 states have call predecessors, (113), 49 states have call successors, (113) [2024-09-12 19:53:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 529 transitions. [2024-09-12 19:53:35,546 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 529 transitions. Word has length 78 [2024-09-12 19:53:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:35,546 INFO L474 AbstractCegarLoop]: Abstraction has 410 states and 529 transitions. [2024-09-12 19:53:35,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 19:53:35,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 529 transitions. [2024-09-12 19:53:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-12 19:53:35,548 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:35,548 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:35,548 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-09-12 19:53:35,548 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:35,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash 77714431, now seen corresponding path program 1 times [2024-09-12 19:53:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596044190] [2024-09-12 19:53:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:35,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 19:53:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 19:53:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-12 19:53:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596044190] [2024-09-12 19:53:35,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596044190] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436286992] [2024-09-12 19:53:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:35,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:35,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:35,597 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 19:53:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:35,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 19:53:35,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:53:35,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:53:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436286992] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:53:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4] total 24 [2024-09-12 19:53:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512151429] [2024-09-12 19:53:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:35,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 19:53:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 19:53:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:53:35,845 INFO L87 Difference]: Start difference. First operand 410 states and 529 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 11 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:53:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:36,179 INFO L93 Difference]: Finished difference Result 791 states and 1057 transitions. [2024-09-12 19:53:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 19:53:36,180 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 11 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 99 [2024-09-12 19:53:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:36,183 INFO L225 Difference]: With dead ends: 791 [2024-09-12 19:53:36,183 INFO L226 Difference]: Without dead ends: 442 [2024-09-12 19:53:36,185 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 19:53:36,185 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 344 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:36,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 323 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-09-12 19:53:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 433. [2024-09-12 19:53:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 341 states have (on average 1.1290322580645162) internal successors, (385), 336 states have internal predecessors, (385), 52 states have call successors, (52), 22 states have call predecessors, (52), 35 states have return successors, (115), 74 states have call predecessors, (115), 51 states have call successors, (115) [2024-09-12 19:53:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 552 transitions. [2024-09-12 19:53:36,236 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 552 transitions. Word has length 99 [2024-09-12 19:53:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:36,237 INFO L474 AbstractCegarLoop]: Abstraction has 433 states and 552 transitions. [2024-09-12 19:53:36,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 11 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:53:36,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 552 transitions. [2024-09-12 19:53:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-12 19:53:36,238 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:36,238 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:36,250 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:36,438 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 19:53:36,439 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:36,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -76535500, now seen corresponding path program 1 times [2024-09-12 19:53:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165567030] [2024-09-12 19:53:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 19:53:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 19:53:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-12 19:53:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165567030] [2024-09-12 19:53:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165567030] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:36,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311904732] [2024-09-12 19:53:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:36,488 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:36,488 INFO L87 Difference]: Start difference. First operand 433 states and 552 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:53:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:36,545 INFO L93 Difference]: Finished difference Result 447 states and 568 transitions. [2024-09-12 19:53:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:36,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2024-09-12 19:53:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:36,548 INFO L225 Difference]: With dead ends: 447 [2024-09-12 19:53:36,548 INFO L226 Difference]: Without dead ends: 446 [2024-09-12 19:53:36,549 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:36,549 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:36,549 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 129 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-09-12 19:53:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 433. [2024-09-12 19:53:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 341 states have (on average 1.1231671554252198) internal successors, (383), 336 states have internal predecessors, (383), 52 states have call successors, (52), 22 states have call predecessors, (52), 35 states have return successors, (115), 74 states have call predecessors, (115), 51 states have call successors, (115) [2024-09-12 19:53:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 550 transitions. [2024-09-12 19:53:36,601 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 550 transitions. Word has length 82 [2024-09-12 19:53:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:36,601 INFO L474 AbstractCegarLoop]: Abstraction has 433 states and 550 transitions. [2024-09-12 19:53:36,601 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:53:36,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 550 transitions. [2024-09-12 19:53:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-12 19:53:36,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:36,603 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:36,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-12 19:53:36,603 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:36,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash 578421688, now seen corresponding path program 1 times [2024-09-12 19:53:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578839477] [2024-09-12 19:53:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 19:53:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 19:53:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 11 proven. 80 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-09-12 19:53:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578839477] [2024-09-12 19:53:36,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578839477] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602137982] [2024-09-12 19:53:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:36,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:36,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:36,840 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:36,842 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 19:53:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:36,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:53:36,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 19:53:36,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 19:53:37,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602137982] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:37,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:37,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2024-09-12 19:53:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312077226] [2024-09-12 19:53:37,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:37,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 19:53:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 19:53:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:53:37,198 INFO L87 Difference]: Start difference. First operand 433 states and 550 transitions. Second operand has 24 states, 23 states have (on average 4.391304347826087) internal successors, (101), 19 states have internal predecessors, (101), 12 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-09-12 19:53:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:37,638 INFO L93 Difference]: Finished difference Result 848 states and 1141 transitions. [2024-09-12 19:53:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 19:53:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.391304347826087) internal successors, (101), 19 states have internal predecessors, (101), 12 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 91 [2024-09-12 19:53:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:37,643 INFO L225 Difference]: With dead ends: 848 [2024-09-12 19:53:37,643 INFO L226 Difference]: Without dead ends: 494 [2024-09-12 19:53:37,646 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 187 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2024-09-12 19:53:37,647 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 181 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:37,647 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 795 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:53:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-09-12 19:53:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 441. [2024-09-12 19:53:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 347 states have (on average 1.1210374639769451) internal successors, (389), 342 states have internal predecessors, (389), 54 states have call successors, (54), 22 states have call predecessors, (54), 35 states have return successors, (113), 76 states have call predecessors, (113), 53 states have call successors, (113) [2024-09-12 19:53:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 556 transitions. [2024-09-12 19:53:37,715 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 556 transitions. Word has length 91 [2024-09-12 19:53:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:37,716 INFO L474 AbstractCegarLoop]: Abstraction has 441 states and 556 transitions. [2024-09-12 19:53:37,716 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.391304347826087) internal successors, (101), 19 states have internal predecessors, (101), 12 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-09-12 19:53:37,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 556 transitions. [2024-09-12 19:53:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 19:53:37,717 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:37,717 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:37,732 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 19:53:37,921 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 19:53:37,922 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:37,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash -296547789, now seen corresponding path program 1 times [2024-09-12 19:53:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202457987] [2024-09-12 19:53:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 19:53:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 19:53:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:53:38,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202457987] [2024-09-12 19:53:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202457987] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008158162] [2024-09-12 19:53:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:38,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:38,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:38,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 19:53:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:53:38,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:53:38,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:53:38,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008158162] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:38,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:38,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2024-09-12 19:53:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855749502] [2024-09-12 19:53:38,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:38,288 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 19:53:38,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 19:53:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:53:38,289 INFO L87 Difference]: Start difference. First operand 441 states and 556 transitions. Second operand has 17 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 7 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-12 19:53:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:38,533 INFO L93 Difference]: Finished difference Result 796 states and 1004 transitions. [2024-09-12 19:53:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 19:53:38,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 7 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2024-09-12 19:53:38,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:38,536 INFO L225 Difference]: With dead ends: 796 [2024-09-12 19:53:38,536 INFO L226 Difference]: Without dead ends: 445 [2024-09-12 19:53:38,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-09-12 19:53:38,538 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 165 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:38,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 461 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-09-12 19:53:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 435. [2024-09-12 19:53:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 341 states have (on average 1.1231671554252198) internal successors, (383), 339 states have internal predecessors, (383), 54 states have call successors, (54), 22 states have call predecessors, (54), 35 states have return successors, (110), 73 states have call predecessors, (110), 53 states have call successors, (110) [2024-09-12 19:53:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 547 transitions. [2024-09-12 19:53:38,604 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 547 transitions. Word has length 92 [2024-09-12 19:53:38,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:38,604 INFO L474 AbstractCegarLoop]: Abstraction has 435 states and 547 transitions. [2024-09-12 19:53:38,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 7 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-12 19:53:38,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 547 transitions. [2024-09-12 19:53:38,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-12 19:53:38,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:38,606 INFO L216 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:38,618 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 19:53:38,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:38,811 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:38,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1445309666, now seen corresponding path program 1 times [2024-09-12 19:53:38,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514619130] [2024-09-12 19:53:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:38,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 19:53:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 19:53:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-12 19:53:39,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514619130] [2024-09-12 19:53:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514619130] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141839841] [2024-09-12 19:53:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:39,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:39,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:39,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:39,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 19:53:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:39,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 19:53:39,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-09-12 19:53:39,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-12 19:53:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141839841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:39,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2024-09-12 19:53:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891915302] [2024-09-12 19:53:39,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:39,438 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 19:53:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 19:53:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2024-09-12 19:53:39,439 INFO L87 Difference]: Start difference. First operand 435 states and 547 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (15), 11 states have call predecessors, (15), 7 states have call successors, (15) [2024-09-12 19:53:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:40,423 INFO L93 Difference]: Finished difference Result 902 states and 1232 transitions. [2024-09-12 19:53:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 19:53:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (15), 11 states have call predecessors, (15), 7 states have call successors, (15) Word has length 95 [2024-09-12 19:53:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:40,427 INFO L225 Difference]: With dead ends: 902 [2024-09-12 19:53:40,427 INFO L226 Difference]: Without dead ends: 546 [2024-09-12 19:53:40,430 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=612, Invalid=4080, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 19:53:40,430 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 287 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:40,431 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 468 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:53:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-09-12 19:53:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 453. [2024-09-12 19:53:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 354 states have (on average 1.112994350282486) internal successors, (394), 354 states have internal predecessors, (394), 57 states have call successors, (57), 22 states have call predecessors, (57), 37 states have return successors, (123), 76 states have call predecessors, (123), 56 states have call successors, (123) [2024-09-12 19:53:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 574 transitions. [2024-09-12 19:53:40,494 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 574 transitions. Word has length 95 [2024-09-12 19:53:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:40,494 INFO L474 AbstractCegarLoop]: Abstraction has 453 states and 574 transitions. [2024-09-12 19:53:40,494 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (15), 11 states have call predecessors, (15), 7 states have call successors, (15) [2024-09-12 19:53:40,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 574 transitions. [2024-09-12 19:53:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 19:53:40,500 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:40,500 INFO L216 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:40,514 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 19:53:40,700 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 19:53:40,700 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:40,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1933934825, now seen corresponding path program 1 times [2024-09-12 19:53:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220567924] [2024-09-12 19:53:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:40,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 19:53:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 19:53:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 19:53:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 41 proven. 73 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:53:40,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:40,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220567924] [2024-09-12 19:53:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220567924] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918198475] [2024-09-12 19:53:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:40,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:40,908 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:40,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 19:53:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:40,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 19:53:40,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-12 19:53:41,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 19:53:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918198475] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:41,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 11] total 34 [2024-09-12 19:53:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588389951] [2024-09-12 19:53:41,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:41,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 19:53:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 19:53:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 19:53:41,420 INFO L87 Difference]: Start difference. First operand 453 states and 574 transitions. Second operand has 34 states, 33 states have (on average 3.303030303030303) internal successors, (109), 28 states have internal predecessors, (109), 14 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) [2024-09-12 19:53:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:42,945 INFO L93 Difference]: Finished difference Result 1034 states and 1475 transitions. [2024-09-12 19:53:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-09-12 19:53:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.303030303030303) internal successors, (109), 28 states have internal predecessors, (109), 14 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) Word has length 96 [2024-09-12 19:53:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:42,952 INFO L225 Difference]: With dead ends: 1034 [2024-09-12 19:53:42,952 INFO L226 Difference]: Without dead ends: 638 [2024-09-12 19:53:42,957 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 208 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=929, Invalid=6553, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 19:53:42,957 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 346 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:42,958 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 582 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 19:53:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-09-12 19:53:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 530. [2024-09-12 19:53:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 417 states have (on average 1.1103117505995204) internal successors, (463), 410 states have internal predecessors, (463), 64 states have call successors, (64), 21 states have call predecessors, (64), 44 states have return successors, (212), 98 states have call predecessors, (212), 63 states have call successors, (212) [2024-09-12 19:53:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 739 transitions. [2024-09-12 19:53:43,052 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 739 transitions. Word has length 96 [2024-09-12 19:53:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:43,056 INFO L474 AbstractCegarLoop]: Abstraction has 530 states and 739 transitions. [2024-09-12 19:53:43,056 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.303030303030303) internal successors, (109), 28 states have internal predecessors, (109), 14 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) [2024-09-12 19:53:43,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 739 transitions. [2024-09-12 19:53:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-12 19:53:43,057 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:43,057 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:43,073 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:43,257 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 19:53:43,258 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:43,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1305162308, now seen corresponding path program 1 times [2024-09-12 19:53:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:43,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014902537] [2024-09-12 19:53:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 19:53:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 19:53:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-09-12 19:53:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014902537] [2024-09-12 19:53:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014902537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:43,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650164337] [2024-09-12 19:53:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:43,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:43,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:43,472 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:43,473 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 19:53:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:43,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:53:43,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-09-12 19:53:43,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-09-12 19:53:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650164337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:44,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2024-09-12 19:53:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388898544] [2024-09-12 19:53:44,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:44,007 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 19:53:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 19:53:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-12 19:53:44,008 INFO L87 Difference]: Start difference. First operand 530 states and 739 transitions. Second operand has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (18), 17 states have call predecessors, (18), 7 states have call successors, (18) [2024-09-12 19:53:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:44,527 INFO L93 Difference]: Finished difference Result 1017 states and 1640 transitions. [2024-09-12 19:53:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 19:53:44,528 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (18), 17 states have call predecessors, (18), 7 states have call successors, (18) Word has length 110 [2024-09-12 19:53:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:44,534 INFO L225 Difference]: With dead ends: 1017 [2024-09-12 19:53:44,534 INFO L226 Difference]: Without dead ends: 1015 [2024-09-12 19:53:44,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 222 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=1533, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 19:53:44,536 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 33 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:44,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 591 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-09-12 19:53:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 712. [2024-09-12 19:53:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.0944741532976827) internal successors, (614), 552 states have internal predecessors, (614), 81 states have call successors, (81), 21 states have call predecessors, (81), 65 states have return successors, (353), 138 states have call predecessors, (353), 80 states have call successors, (353) [2024-09-12 19:53:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1048 transitions. [2024-09-12 19:53:44,686 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1048 transitions. Word has length 110 [2024-09-12 19:53:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:44,686 INFO L474 AbstractCegarLoop]: Abstraction has 712 states and 1048 transitions. [2024-09-12 19:53:44,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (11), 1 states have call predecessors, (11), 10 states have return successors, (18), 17 states have call predecessors, (18), 7 states have call successors, (18) [2024-09-12 19:53:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1048 transitions. [2024-09-12 19:53:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-09-12 19:53:44,687 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:44,687 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:44,699 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 19:53:44,891 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 19:53:44,892 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1805325983, now seen corresponding path program 1 times [2024-09-12 19:53:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632697560] [2024-09-12 19:53:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:44,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:44,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 19:53:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 19:53:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-09-12 19:53:45,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:45,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632697560] [2024-09-12 19:53:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632697560] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:45,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81817133] [2024-09-12 19:53:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:45,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:45,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:45,131 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:45,132 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 19:53:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:45,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 19:53:45,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-09-12 19:53:45,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-09-12 19:53:45,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81817133] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:45,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:45,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2024-09-12 19:53:45,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749560612] [2024-09-12 19:53:45,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:45,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 19:53:45,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:45,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 19:53:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:53:45,732 INFO L87 Difference]: Start difference. First operand 712 states and 1048 transitions. Second operand has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-09-12 19:53:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:46,194 INFO L93 Difference]: Finished difference Result 1142 states and 1849 transitions. [2024-09-12 19:53:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 19:53:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 111 [2024-09-12 19:53:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:46,203 INFO L225 Difference]: With dead ends: 1142 [2024-09-12 19:53:46,204 INFO L226 Difference]: Without dead ends: 1140 [2024-09-12 19:53:46,205 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 224 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 19:53:46,205 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 26 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:46,206 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 572 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-09-12 19:53:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 842. [2024-09-12 19:53:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 661 states have (on average 1.0741301059001513) internal successors, (710), 655 states have internal predecessors, (710), 93 states have call successors, (93), 21 states have call predecessors, (93), 83 states have return successors, (582), 165 states have call predecessors, (582), 92 states have call successors, (582) [2024-09-12 19:53:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1385 transitions. [2024-09-12 19:53:46,353 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1385 transitions. Word has length 111 [2024-09-12 19:53:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:46,353 INFO L474 AbstractCegarLoop]: Abstraction has 842 states and 1385 transitions. [2024-09-12 19:53:46,353 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-09-12 19:53:46,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1385 transitions. [2024-09-12 19:53:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-12 19:53:46,355 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:46,355 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:46,367 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 19:53:46,558 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 19:53:46,559 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:46,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash 631395001, now seen corresponding path program 1 times [2024-09-12 19:53:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175243731] [2024-09-12 19:53:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 19:53:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-09-12 19:53:46,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:46,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175243731] [2024-09-12 19:53:46,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175243731] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:46,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280615631] [2024-09-12 19:53:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:46,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:46,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:46,833 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:46,835 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 19:53:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:46,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 19:53:46,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-09-12 19:53:47,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-09-12 19:53:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280615631] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:47,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 20 [2024-09-12 19:53:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444340655] [2024-09-12 19:53:47,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:47,251 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 19:53:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 19:53:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-09-12 19:53:47,251 INFO L87 Difference]: Start difference. First operand 842 states and 1385 transitions. Second operand has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 16 states have internal predecessors, (91), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-12 19:53:47,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:47,792 INFO L93 Difference]: Finished difference Result 1822 states and 3069 transitions. [2024-09-12 19:53:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 19:53:47,792 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 16 states have internal predecessors, (91), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) Word has length 145 [2024-09-12 19:53:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:47,800 INFO L225 Difference]: With dead ends: 1822 [2024-09-12 19:53:47,800 INFO L226 Difference]: Without dead ends: 992 [2024-09-12 19:53:47,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 305 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2024-09-12 19:53:47,809 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 194 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:47,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 612 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:53:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2024-09-12 19:53:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 949. [2024-09-12 19:53:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 746 states have (on average 1.0750670241286864) internal successors, (802), 739 states have internal predecessors, (802), 105 states have call successors, (105), 24 states have call predecessors, (105), 93 states have return successors, (672), 185 states have call predecessors, (672), 104 states have call successors, (672) [2024-09-12 19:53:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2024-09-12 19:53:48,022 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 145 [2024-09-12 19:53:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:48,023 INFO L474 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2024-09-12 19:53:48,023 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 16 states have internal predecessors, (91), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-12 19:53:48,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2024-09-12 19:53:48,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-09-12 19:53:48,028 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:48,028 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:48,043 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 19:53:48,232 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:48,233 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:48,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1843942799, now seen corresponding path program 2 times [2024-09-12 19:53:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896840592] [2024-09-12 19:53:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 19:53:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 121 proven. 139 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-09-12 19:53:48,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:48,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896840592] [2024-09-12 19:53:48,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896840592] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:48,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518520304] [2024-09-12 19:53:48,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:48,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:48,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:48,498 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:48,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 19:53:48,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:48,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:48,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 19:53:48,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 172 proven. 151 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-09-12 19:53:48,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 172 proven. 157 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-12 19:53:49,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518520304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:49,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:49,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19] total 27 [2024-09-12 19:53:49,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860415434] [2024-09-12 19:53:49,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:49,216 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 19:53:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 19:53:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:53:49,217 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand has 27 states, 26 states have (on average 4.923076923076923) internal successors, (128), 23 states have internal predecessors, (128), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (21), 9 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 19:53:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:49,865 INFO L93 Difference]: Finished difference Result 1857 states and 3578 transitions. [2024-09-12 19:53:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 19:53:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.923076923076923) internal successors, (128), 23 states have internal predecessors, (128), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (21), 9 states have call predecessors, (21), 12 states have call successors, (21) Word has length 183 [2024-09-12 19:53:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:49,877 INFO L225 Difference]: With dead ends: 1857 [2024-09-12 19:53:49,878 INFO L226 Difference]: Without dead ends: 985 [2024-09-12 19:53:49,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 382 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 19:53:49,888 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 278 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:49,889 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 387 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-09-12 19:53:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 914. [2024-09-12 19:53:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 719 states have (on average 1.0737134909596662) internal successors, (772), 711 states have internal predecessors, (772), 101 states have call successors, (101), 26 states have call predecessors, (101), 89 states have return successors, (599), 176 states have call predecessors, (599), 100 states have call successors, (599) [2024-09-12 19:53:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1472 transitions. [2024-09-12 19:53:50,093 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1472 transitions. Word has length 183 [2024-09-12 19:53:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:50,094 INFO L474 AbstractCegarLoop]: Abstraction has 914 states and 1472 transitions. [2024-09-12 19:53:50,094 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.923076923076923) internal successors, (128), 23 states have internal predecessors, (128), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (21), 9 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 19:53:50,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1472 transitions. [2024-09-12 19:53:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-12 19:53:50,096 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:50,096 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:50,108 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 19:53:50,296 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:50,297 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:50,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 654782576, now seen corresponding path program 3 times [2024-09-12 19:53:50,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:50,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653329950] [2024-09-12 19:53:50,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:50,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 19:53:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 19:53:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 123 proven. 120 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-12 19:53:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653329950] [2024-09-12 19:53:50,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653329950] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455301484] [2024-09-12 19:53:50,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:53:50,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:50,513 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:50,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 19:53:50,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 19:53:50,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:50,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 19:53:50,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 138 proven. 4 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-09-12 19:53:50,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-09-12 19:53:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455301484] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:50,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7] total 20 [2024-09-12 19:53:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314796174] [2024-09-12 19:53:50,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:50,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 19:53:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 19:53:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-09-12 19:53:50,963 INFO L87 Difference]: Start difference. First operand 914 states and 1472 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-12 19:53:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:51,584 INFO L93 Difference]: Finished difference Result 1745 states and 3057 transitions. [2024-09-12 19:53:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 19:53:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 165 [2024-09-12 19:53:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:51,591 INFO L225 Difference]: With dead ends: 1745 [2024-09-12 19:53:51,591 INFO L226 Difference]: Without dead ends: 899 [2024-09-12 19:53:51,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 359 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2024-09-12 19:53:51,598 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 130 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:51,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 460 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-09-12 19:53:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 896. [2024-09-12 19:53:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 706 states have (on average 1.075070821529745) internal successors, (759), 696 states have internal predecessors, (759), 98 states have call successors, (98), 28 states have call predecessors, (98), 87 states have return successors, (559), 171 states have call predecessors, (559), 97 states have call successors, (559) [2024-09-12 19:53:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1416 transitions. [2024-09-12 19:53:51,763 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1416 transitions. Word has length 165 [2024-09-12 19:53:51,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:51,764 INFO L474 AbstractCegarLoop]: Abstraction has 896 states and 1416 transitions. [2024-09-12 19:53:51,764 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-12 19:53:51,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,764 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1416 transitions. [2024-09-12 19:53:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-12 19:53:51,765 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:51,765 INFO L216 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:51,780 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 19:53:51,966 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:51,966 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:51,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -837638657, now seen corresponding path program 4 times [2024-09-12 19:53:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375339051] [2024-09-12 19:53:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:51,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 19:53:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-09-12 19:53:52,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375339051] [2024-09-12 19:53:52,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375339051] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744497682] [2024-09-12 19:53:52,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:53:52,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:52,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:52,392 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:52,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 19:53:52,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:53:52,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:52,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 19:53:52,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-09-12 19:53:52,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-12 19:53:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744497682] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:53,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2024-09-12 19:53:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732077166] [2024-09-12 19:53:53,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:53,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 19:53:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 19:53:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 19:53:53,588 INFO L87 Difference]: Start difference. First operand 896 states and 1416 transitions. Second operand has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (25), 25 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-12 19:53:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:54,415 INFO L93 Difference]: Finished difference Result 1697 states and 3185 transitions. [2024-09-12 19:53:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 19:53:54,416 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (25), 25 states have call predecessors, (25), 9 states have call successors, (25) Word has length 164 [2024-09-12 19:53:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:54,428 INFO L225 Difference]: With dead ends: 1697 [2024-09-12 19:53:54,428 INFO L226 Difference]: Without dead ends: 1672 [2024-09-12 19:53:54,430 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 335 SyntacticMatches, 16 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=334, Invalid=2116, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 19:53:54,430 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 32 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:54,430 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 650 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:53:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-09-12 19:53:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1110. [2024-09-12 19:53:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 873 states have (on average 1.0492554410080184) internal successors, (916), 862 states have internal predecessors, (916), 120 states have call successors, (120), 28 states have call predecessors, (120), 112 states have return successors, (847), 219 states have call predecessors, (847), 119 states have call successors, (847) [2024-09-12 19:53:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1883 transitions. [2024-09-12 19:53:54,672 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1883 transitions. Word has length 164 [2024-09-12 19:53:54,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:54,674 INFO L474 AbstractCegarLoop]: Abstraction has 1110 states and 1883 transitions. [2024-09-12 19:53:54,674 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (13), 1 states have call predecessors, (13), 12 states have return successors, (25), 25 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-12 19:53:54,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1883 transitions. [2024-09-12 19:53:54,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-12 19:53:54,676 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:54,676 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 12, 12, 10, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:54,693 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:54,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 19:53:54,881 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:54,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093396, now seen corresponding path program 2 times [2024-09-12 19:53:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778696121] [2024-09-12 19:53:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 19:53:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 19:53:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 19:53:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 19:53:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 19:53:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 242 proven. 168 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-09-12 19:53:55,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778696121] [2024-09-12 19:53:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778696121] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240575610] [2024-09-12 19:53:55,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:55,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:55,179 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:55,180 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 19:53:55,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:55,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:55,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 19:53:55,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 495 proven. 266 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-09-12 19:53:55,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 153 proven. 400 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-09-12 19:53:56,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240575610] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:56,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:56,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 19] total 35 [2024-09-12 19:53:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124251567] [2024-09-12 19:53:56,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:56,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 19:53:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 19:53:56,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 19:53:56,338 INFO L87 Difference]: Start difference. First operand 1110 states and 1883 transitions. Second operand has 35 states, 33 states have (on average 5.545454545454546) internal successors, (183), 29 states have internal predecessors, (183), 23 states have call successors, (35), 8 states have call predecessors, (35), 10 states have return successors, (30), 13 states have call predecessors, (30), 17 states have call successors, (30) [2024-09-12 19:53:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:57,361 INFO L93 Difference]: Finished difference Result 2171 states and 4249 transitions. [2024-09-12 19:53:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 19:53:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 5.545454545454546) internal successors, (183), 29 states have internal predecessors, (183), 23 states have call successors, (35), 8 states have call predecessors, (35), 10 states have return successors, (30), 13 states have call predecessors, (30), 17 states have call successors, (30) Word has length 256 [2024-09-12 19:53:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:57,370 INFO L225 Difference]: With dead ends: 2171 [2024-09-12 19:53:57,370 INFO L226 Difference]: Without dead ends: 991 [2024-09-12 19:53:57,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 536 SyntacticMatches, 12 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=450, Invalid=3090, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 19:53:57,382 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 450 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:57,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 888 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:53:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-09-12 19:53:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 861. [2024-09-12 19:53:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 681 states have (on average 1.0631424375917768) internal successors, (724), 668 states have internal predecessors, (724), 92 states have call successors, (92), 31 states have call predecessors, (92), 83 states have return successors, (514), 161 states have call predecessors, (514), 91 states have call successors, (514) [2024-09-12 19:53:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1330 transitions. [2024-09-12 19:53:57,571 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1330 transitions. Word has length 256 [2024-09-12 19:53:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:57,572 INFO L474 AbstractCegarLoop]: Abstraction has 861 states and 1330 transitions. [2024-09-12 19:53:57,572 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 5.545454545454546) internal successors, (183), 29 states have internal predecessors, (183), 23 states have call successors, (35), 8 states have call predecessors, (35), 10 states have return successors, (30), 13 states have call predecessors, (30), 17 states have call successors, (30) [2024-09-12 19:53:57,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1330 transitions. [2024-09-12 19:53:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-12 19:53:57,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:57,573 INFO L216 NwaCegarLoop]: trace histogram [16, 14, 12, 11, 10, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:57,589 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 19:53:57,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 19:53:57,774 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:53:57,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1453211070, now seen corresponding path program 2 times [2024-09-12 19:53:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335276280] [2024-09-12 19:53:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 19:53:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:53:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:53:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 19:53:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 19:53:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 264 proven. 186 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2024-09-12 19:53:58,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335276280] [2024-09-12 19:53:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335276280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784974959] [2024-09-12 19:53:58,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:58,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:58,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:58,257 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:58,258 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 19:53:58,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:58,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:58,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 19:53:58,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 301 proven. 175 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2024-09-12 19:53:58,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 301 proven. 181 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2024-09-12 19:53:59,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784974959] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:59,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:59,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 34 [2024-09-12 19:53:59,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677572972] [2024-09-12 19:53:59,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:59,177 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 19:53:59,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 19:53:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 19:53:59,179 INFO L87 Difference]: Start difference. First operand 861 states and 1330 transitions. Second operand has 34 states, 32 states have (on average 4.78125) internal successors, (153), 28 states have internal predecessors, (153), 20 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) [2024-09-12 19:54:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:00,009 INFO L93 Difference]: Finished difference Result 1820 states and 3254 transitions. [2024-09-12 19:54:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 19:54:00,010 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.78125) internal successors, (153), 28 states have internal predecessors, (153), 20 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) Word has length 256 [2024-09-12 19:54:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:00,020 INFO L225 Difference]: With dead ends: 1820 [2024-09-12 19:54:00,020 INFO L226 Difference]: Without dead ends: 1023 [2024-09-12 19:54:00,030 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 540 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=2683, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 19:54:00,031 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 357 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:00,031 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 870 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:54:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-09-12 19:54:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 953. [2024-09-12 19:54:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 749 states have (on average 1.0427236315086783) internal successors, (781), 742 states have internal predecessors, (781), 108 states have call successors, (108), 35 states have call predecessors, (108), 91 states have return successors, (421), 175 states have call predecessors, (421), 107 states have call successors, (421) [2024-09-12 19:54:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1310 transitions. [2024-09-12 19:54:00,244 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1310 transitions. Word has length 256 [2024-09-12 19:54:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:00,244 INFO L474 AbstractCegarLoop]: Abstraction has 953 states and 1310 transitions. [2024-09-12 19:54:00,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.78125) internal successors, (153), 28 states have internal predecessors, (153), 20 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) [2024-09-12 19:54:00,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1310 transitions. [2024-09-12 19:54:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-09-12 19:54:00,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:00,246 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 12, 12, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:00,259 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 19:54:00,450 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:00,451 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:00,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash 838394369, now seen corresponding path program 3 times [2024-09-12 19:54:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432426919] [2024-09-12 19:54:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 19:54:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:54:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 19:54:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 19:54:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 19:54:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:54:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 163 proven. 522 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-09-12 19:54:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432426919] [2024-09-12 19:54:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432426919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275459888] [2024-09-12 19:54:00,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:54:00,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:00,889 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:00,891 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 19:54:00,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 19:54:00,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:00,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 19:54:00,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 982 trivial. 0 not checked. [2024-09-12 19:54:00,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:54:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275459888] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:54:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:54:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 23 [2024-09-12 19:54:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480469896] [2024-09-12 19:54:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:54:01,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 19:54:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 19:54:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:54:01,001 INFO L87 Difference]: Start difference. First operand 953 states and 1310 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 19:54:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:01,137 INFO L93 Difference]: Finished difference Result 1407 states and 1966 transitions. [2024-09-12 19:54:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 19:54:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 274 [2024-09-12 19:54:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:01,144 INFO L225 Difference]: With dead ends: 1407 [2024-09-12 19:54:01,144 INFO L226 Difference]: Without dead ends: 521 [2024-09-12 19:54:01,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-09-12 19:54:01,149 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:01,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 109 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:54:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-09-12 19:54:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-09-12 19:54:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 411 states have (on average 1.0316301703163018) internal successors, (424), 409 states have internal predecessors, (424), 62 states have call successors, (62), 35 states have call predecessors, (62), 45 states have return successors, (112), 76 states have call predecessors, (112), 61 states have call successors, (112) [2024-09-12 19:54:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 598 transitions. [2024-09-12 19:54:01,247 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 598 transitions. Word has length 274 [2024-09-12 19:54:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:01,248 INFO L474 AbstractCegarLoop]: Abstraction has 521 states and 598 transitions. [2024-09-12 19:54:01,248 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 19:54:01,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 598 transitions. [2024-09-12 19:54:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-12 19:54:01,249 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:01,249 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:01,261 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 19:54:01,450 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 19:54:01,450 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:01,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2026874926, now seen corresponding path program 4 times [2024-09-12 19:54:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660989138] [2024-09-12 19:54:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 19:54:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 19:54:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-09-12 19:54:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660989138] [2024-09-12 19:54:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660989138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193075259] [2024-09-12 19:54:02,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 19:54:02,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:02,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:02,446 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:02,448 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 19:54:02,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 19:54:02,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:02,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-12 19:54:02,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2024-09-12 19:54:02,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-09-12 19:54:05,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193075259] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:05,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:05,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2024-09-12 19:54:05,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354564489] [2024-09-12 19:54:05,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:05,449 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 19:54:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 19:54:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 19:54:05,452 INFO L87 Difference]: Start difference. First operand 521 states and 598 transitions. Second operand has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (33), 33 states have call predecessors, (33), 12 states have call successors, (33) [2024-09-12 19:54:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:05,854 INFO L93 Difference]: Finished difference Result 611 states and 711 transitions. [2024-09-12 19:54:05,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 19:54:05,854 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (33), 33 states have call predecessors, (33), 12 states have call successors, (33) Word has length 256 [2024-09-12 19:54:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:05,858 INFO L225 Difference]: With dead ends: 611 [2024-09-12 19:54:05,858 INFO L226 Difference]: Without dead ends: 541 [2024-09-12 19:54:05,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 531 SyntacticMatches, 33 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=357, Invalid=2399, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 19:54:05,863 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:05,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 553 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:54:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-09-12 19:54:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 464. [2024-09-12 19:54:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 366 states have (on average 1.030054644808743) internal successors, (377), 365 states have internal predecessors, (377), 56 states have call successors, (56), 35 states have call predecessors, (56), 39 states have return successors, (86), 63 states have call predecessors, (86), 55 states have call successors, (86) [2024-09-12 19:54:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 519 transitions. [2024-09-12 19:54:05,983 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 519 transitions. Word has length 256 [2024-09-12 19:54:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:05,983 INFO L474 AbstractCegarLoop]: Abstraction has 464 states and 519 transitions. [2024-09-12 19:54:05,983 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (33), 33 states have call predecessors, (33), 12 states have call successors, (33) [2024-09-12 19:54:05,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 519 transitions. [2024-09-12 19:54:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-09-12 19:54:05,985 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:05,986 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 18, 18, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:05,998 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 19:54:06,189 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 19:54:06,190 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:06,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 280205458, now seen corresponding path program 5 times [2024-09-12 19:54:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:06,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673910741] [2024-09-12 19:54:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:06,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:54:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 19:54:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 19:54:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 19:54:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 600 proven. 314 refuted. 0 times theorem prover too weak. 2193 trivial. 0 not checked. [2024-09-12 19:54:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673910741] [2024-09-12 19:54:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673910741] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116083324] [2024-09-12 19:54:06,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 19:54:06,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:06,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:06,654 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:06,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 19:54:06,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-09-12 19:54:06,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:06,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 19:54:06,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 585 proven. 766 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-09-12 19:54:07,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3107 backedges. 589 proven. 788 refuted. 0 times theorem prover too weak. 1730 trivial. 0 not checked. [2024-09-12 19:54:08,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116083324] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:08,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:08,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 23] total 39 [2024-09-12 19:54:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232245819] [2024-09-12 19:54:08,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:08,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 19:54:08,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 19:54:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 19:54:08,492 INFO L87 Difference]: Start difference. First operand 464 states and 519 transitions. Second operand has 39 states, 38 states have (on average 5.684210526315789) internal successors, (216), 37 states have internal predecessors, (216), 27 states have call successors, (40), 3 states have call predecessors, (40), 14 states have return successors, (45), 19 states have call predecessors, (45), 25 states have call successors, (45) [2024-09-12 19:54:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:09,462 INFO L93 Difference]: Finished difference Result 895 states and 1036 transitions. [2024-09-12 19:54:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 19:54:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.684210526315789) internal successors, (216), 37 states have internal predecessors, (216), 27 states have call successors, (40), 3 states have call predecessors, (40), 14 states have return successors, (45), 19 states have call predecessors, (45), 25 states have call successors, (45) Word has length 427 [2024-09-12 19:54:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:09,468 INFO L225 Difference]: With dead ends: 895 [2024-09-12 19:54:09,468 INFO L226 Difference]: Without dead ends: 500 [2024-09-12 19:54:09,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 910 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=694, Invalid=3862, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 19:54:09,471 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 252 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:09,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 891 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:54:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-09-12 19:54:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 479. [2024-09-12 19:54:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 378 states have (on average 1.0238095238095237) internal successors, (387), 378 states have internal predecessors, (387), 59 states have call successors, (59), 37 states have call predecessors, (59), 39 states have return successors, (81), 63 states have call predecessors, (81), 58 states have call successors, (81) [2024-09-12 19:54:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 527 transitions. [2024-09-12 19:54:09,557 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 527 transitions. Word has length 427 [2024-09-12 19:54:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:09,557 INFO L474 AbstractCegarLoop]: Abstraction has 479 states and 527 transitions. [2024-09-12 19:54:09,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.684210526315789) internal successors, (216), 37 states have internal predecessors, (216), 27 states have call successors, (40), 3 states have call predecessors, (40), 14 states have return successors, (45), 19 states have call predecessors, (45), 25 states have call successors, (45) [2024-09-12 19:54:09,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 527 transitions. [2024-09-12 19:54:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-09-12 19:54:09,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:09,560 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:09,572 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 19:54:09,763 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 19:54:09,764 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:09,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash -257499487, now seen corresponding path program 6 times [2024-09-12 19:54:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511317310] [2024-09-12 19:54:09,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:09,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:10,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:10,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:54:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:10,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:10,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:10,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:10,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 19:54:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2024-09-12 19:54:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:11,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511317310] [2024-09-12 19:54:11,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511317310] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:11,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382548015] [2024-09-12 19:54:11,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 19:54:11,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:11,687 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:11,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 19:54:11,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-12 19:54:11,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:11,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-12 19:54:11,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2024-09-12 19:54:12,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 585 proven. 468 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2024-09-12 19:54:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382548015] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:18,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 37] total 58 [2024-09-12 19:54:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885465501] [2024-09-12 19:54:18,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:18,329 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 19:54:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 19:54:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=3007, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 19:54:18,332 INFO L87 Difference]: Start difference. First operand 479 states and 527 transitions. Second operand has 59 states, 58 states have (on average 2.6551724137931036) internal successors, (154), 59 states have internal predecessors, (154), 15 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (41), 41 states have call predecessors, (41), 15 states have call successors, (41) [2024-09-12 19:54:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:18,617 INFO L93 Difference]: Finished difference Result 487 states and 535 transitions. [2024-09-12 19:54:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 19:54:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.6551724137931036) internal successors, (154), 59 states have internal predecessors, (154), 15 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (41), 41 states have call predecessors, (41), 15 states have call successors, (41) Word has length 407 [2024-09-12 19:54:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:18,621 INFO L225 Difference]: With dead ends: 487 [2024-09-12 19:54:18,621 INFO L226 Difference]: Without dead ends: 387 [2024-09-12 19:54:18,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 857 SyntacticMatches, 62 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4520 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=449, Invalid=3211, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 19:54:18,622 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:18,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 641 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:54:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-12 19:54:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 365. [2024-09-12 19:54:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 287 states have (on average 1.0209059233449478) internal successors, (293), 288 states have internal predecessors, (293), 46 states have call successors, (46), 32 states have call predecessors, (46), 30 states have return successors, (51), 44 states have call predecessors, (51), 45 states have call successors, (51) [2024-09-12 19:54:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 390 transitions. [2024-09-12 19:54:18,681 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 390 transitions. Word has length 407 [2024-09-12 19:54:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:18,682 INFO L474 AbstractCegarLoop]: Abstraction has 365 states and 390 transitions. [2024-09-12 19:54:18,682 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.6551724137931036) internal successors, (154), 59 states have internal predecessors, (154), 15 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (41), 41 states have call predecessors, (41), 15 states have call successors, (41) [2024-09-12 19:54:18,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 390 transitions. [2024-09-12 19:54:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2024-09-12 19:54:18,684 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:18,685 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:18,698 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 19:54:18,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 19:54:18,888 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:18,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1685219610, now seen corresponding path program 5 times [2024-09-12 19:54:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725322218] [2024-09-12 19:54:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:54:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 19:54:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2024-09-12 19:54:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 1390 proven. 277 refuted. 0 times theorem prover too weak. 4992 trivial. 0 not checked. [2024-09-12 19:54:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725322218] [2024-09-12 19:54:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725322218] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337808783] [2024-09-12 19:54:19,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 19:54:19,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:19,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:19,501 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:19,502 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 19:54:19,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 19:54:19,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:19,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 19:54:19,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 777 proven. 1177 refuted. 0 times theorem prover too weak. 4705 trivial. 0 not checked. [2024-09-12 19:54:20,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 785 proven. 1193 refuted. 0 times theorem prover too weak. 4681 trivial. 0 not checked. [2024-09-12 19:54:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337808783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:21,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 40 [2024-09-12 19:54:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361116214] [2024-09-12 19:54:21,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:21,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 19:54:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:21,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 19:54:21,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1359, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 19:54:21,585 INFO L87 Difference]: Start difference. First operand 365 states and 390 transitions. Second operand has 40 states, 39 states have (on average 5.615384615384615) internal successors, (219), 39 states have internal predecessors, (219), 25 states have call successors, (40), 2 states have call predecessors, (40), 16 states have return successors, (45), 26 states have call predecessors, (45), 24 states have call successors, (45) [2024-09-12 19:54:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:22,366 INFO L93 Difference]: Finished difference Result 504 states and 541 transitions. [2024-09-12 19:54:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 19:54:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.615384615384615) internal successors, (219), 39 states have internal predecessors, (219), 25 states have call successors, (40), 2 states have call predecessors, (40), 16 states have return successors, (45), 26 states have call predecessors, (45), 24 states have call successors, (45) Word has length 617 [2024-09-12 19:54:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:22,371 INFO L225 Difference]: With dead ends: 504 [2024-09-12 19:54:22,371 INFO L226 Difference]: Without dead ends: 368 [2024-09-12 19:54:22,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1397 GetRequests, 1330 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=476, Invalid=2946, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 19:54:22,372 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 208 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:22,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 980 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:54:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-12 19:54:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2024-09-12 19:54:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 290 states have (on average 1.0241379310344827) internal successors, (297), 286 states have internal predecessors, (297), 45 states have call successors, (45), 38 states have call predecessors, (45), 27 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 19:54:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 386 transitions. [2024-09-12 19:54:22,434 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 386 transitions. Word has length 617 [2024-09-12 19:54:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:22,435 INFO L474 AbstractCegarLoop]: Abstraction has 364 states and 386 transitions. [2024-09-12 19:54:22,435 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.615384615384615) internal successors, (219), 39 states have internal predecessors, (219), 25 states have call successors, (40), 2 states have call predecessors, (40), 16 states have return successors, (45), 26 states have call predecessors, (45), 24 states have call successors, (45) [2024-09-12 19:54:22,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 386 transitions. [2024-09-12 19:54:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2024-09-12 19:54:22,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:22,439 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:22,457 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 19:54:22,643 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:22,644 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:22,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1556269579, now seen corresponding path program 6 times [2024-09-12 19:54:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400162102] [2024-09-12 19:54:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:24,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:24,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:54:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 19:54:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:25,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2024-09-12 19:54:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2024-09-12 19:54:26,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400162102] [2024-09-12 19:54:26,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400162102] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584753845] [2024-09-12 19:54:26,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 19:54:26,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:26,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:26,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:26,619 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 19:54:26,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-09-12 19:54:26,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:26,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-12 19:54:26,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2024-09-12 19:54:27,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1543 proven. 1316 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2024-09-12 19:54:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584753845] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:42,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:42,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 46] total 69 [2024-09-12 19:54:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100321512] [2024-09-12 19:54:42,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:42,272 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 19:54:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 19:54:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 19:54:42,273 INFO L87 Difference]: Start difference. First operand 364 states and 386 transitions. Second operand has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 70 states have internal predecessors, (181), 18 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (49), 49 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-12 19:54:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:42,457 INFO L93 Difference]: Finished difference Result 364 states and 386 transitions. [2024-09-12 19:54:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 19:54:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 70 states have internal predecessors, (181), 18 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (49), 49 states have call predecessors, (49), 18 states have call successors, (49) Word has length 656 [2024-09-12 19:54:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:42,461 INFO L225 Difference]: With dead ends: 364 [2024-09-12 19:54:42,461 INFO L226 Difference]: Without dead ends: 363 [2024-09-12 19:54:42,462 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1578 GetRequests, 1399 SyntacticMatches, 111 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8705 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 19:54:42,463 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:42,463 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:54:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-12 19:54:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-09-12 19:54:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 290 states have (on average 1.0206896551724138) internal successors, (296), 285 states have internal predecessors, (296), 45 states have call successors, (45), 38 states have call predecessors, (45), 27 states have return successors, (44), 39 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 19:54:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 385 transitions. [2024-09-12 19:54:42,516 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 385 transitions. Word has length 656 [2024-09-12 19:54:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:42,516 INFO L474 AbstractCegarLoop]: Abstraction has 363 states and 385 transitions. [2024-09-12 19:54:42,517 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 70 states have internal predecessors, (181), 18 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (49), 49 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-12 19:54:42,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 385 transitions. [2024-09-12 19:54:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2024-09-12 19:54:42,520 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:42,520 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:42,537 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-12 19:54:42,724 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 19:54:42,725 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 19:54:42,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -209639219, now seen corresponding path program 1 times [2024-09-12 19:54:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166411450] [2024-09-12 19:54:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:45,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:45,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:46,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:46,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 19:54:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:47,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2024-09-12 19:54:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 19:54:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7618 backedges. 0 proven. 2741 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2024-09-12 19:54:48,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166411450] [2024-09-12 19:54:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166411450] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34450499] [2024-09-12 19:54:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:48,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:48,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:48,628 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:48,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 19:54:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:49,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 271 conjuncts are in the unsatisfiable core [2024-09-12 19:54:49,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7618 backedges. 0 proven. 2741 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2024-09-12 19:54:49,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7618 backedges. 0 proven. 2741 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2024-09-12 19:54:51,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34450499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:51,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:51,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2024-09-12 19:54:51,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416828042] [2024-09-12 19:54:51,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:51,854 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 19:54:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 19:54:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 19:54:51,856 INFO L87 Difference]: Start difference. First operand 363 states and 385 transitions. Second operand has 52 states, 52 states have (on average 2.5961538461538463) internal successors, (135), 51 states have internal predecessors, (135), 11 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 11 states have call successors, (36) [2024-09-12 19:54:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:52,579 INFO L93 Difference]: Finished difference Result 363 states and 385 transitions. [2024-09-12 19:54:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 19:54:52,580 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5961538461538463) internal successors, (135), 51 states have internal predecessors, (135), 11 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 11 states have call successors, (36) Word has length 661 [2024-09-12 19:54:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:52,583 INFO L225 Difference]: With dead ends: 363 [2024-09-12 19:54:52,583 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 19:54:52,584 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1594 GetRequests, 1544 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 19:54:52,584 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 3355 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:52,585 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3443 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 19:54:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 19:54:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 19:54:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 19:54:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 19:54:52,586 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 661 [2024-09-12 19:54:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:52,586 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 19:54:52,586 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5961538461538463) internal successors, (135), 51 states have internal predecessors, (135), 11 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 11 states have call successors, (36) [2024-09-12 19:54:52,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 19:54:52,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 19:54:52,589 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (12 of 13 remaining) [2024-09-12 19:54:52,589 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-09-12 19:54:52,589 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-09-12 19:54:52,589 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-09-12 19:54:52,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-09-12 19:54:52,605 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 19:54:52,794 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:52,797 INFO L408 BasicCegarLoop]: Path program histogram: [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:52,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 19:56:38,831 WARN L293 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 158 DAG size of output: 91 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)