./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann04.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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd 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/Ackermann04.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 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:46:31,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:46:31,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:46:31,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:46:31,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:46:31,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:46:31,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:46:31,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:46:31,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:46:31,453 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:46:31,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:46:31,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:46:31,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:46:31,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:46:31,456 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:46:31,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:46:31,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:46:31,457 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:46:31,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:46:31,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:46:31,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:46:31,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:46:31,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:46:31,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:46:31,462 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:46:31,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:46:31,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:46:31,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:46:31,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:46:31,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:46:31,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:46:31,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:46:31,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:46:31,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:46:31,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:46:31,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:46:31,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:46:31,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:46:31,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:46:31,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:46:31,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:46:31,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:46:31,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:46:31,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:46:31,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:46:31,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:46:31,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:46:31,753 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:46:31,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann04.c [2024-09-20 19:46:33,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:46:33,307 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:46:33,307 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c [2024-09-20 19:46:33,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8caf403ea/35865f3aaa3e4223ab8c781283e83385/FLAG6d209358a [2024-09-20 19:46:33,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8caf403ea/35865f3aaa3e4223ab8c781283e83385 [2024-09-20 19:46:33,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:46:33,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:46:33,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:46:33,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:46:33,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:46:33,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb279fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33, skipping insertion in model container [2024-09-20 19:46:33,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,350 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:46:33,485 WARN L248 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/Ackermann04.c[1166,1179] [2024-09-20 19:46:33,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:46:33,499 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:46:33,511 WARN L248 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/Ackermann04.c[1166,1179] [2024-09-20 19:46:33,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:46:33,525 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:46:33,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33 WrapperNode [2024-09-20 19:46:33,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:46:33,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:46:33,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:46:33,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:46:33,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,546 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:46:33,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:46:33,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:46:33,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:46:33,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:46:33,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,581 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]. [2024-09-20 19:46:33,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:46:33,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:46:33,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:46:33,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:46:33,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (1/1) ... [2024-09-20 19:46:33,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:46:33,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:33,639 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) [2024-09-20 19:46:33,642 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 [2024-09-20 19:46:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:46:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:46:33,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:46:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:46:33,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:46:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-20 19:46:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-20 19:46:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:46:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:46:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:46:33,755 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:46:33,757 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:46:33,982 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-20 19:46:33,984 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:46:34,011 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:46:34,011 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 19:46:34,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:46:34 BoogieIcfgContainer [2024-09-20 19:46:34,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:46:34,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:46:34,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:46:34,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:46:34,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:46:33" (1/3) ... [2024-09-20 19:46:34,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144caeca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:46:34, skipping insertion in model container [2024-09-20 19:46:34,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:33" (2/3) ... [2024-09-20 19:46:34,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144caeca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:46:34, skipping insertion in model container [2024-09-20 19:46:34,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:46:34" (3/3) ... [2024-09-20 19:46:34,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2024-09-20 19:46:34,040 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:46:34,041 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:46:34,100 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:46:34,107 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;@13ec4c02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:46:34,108 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:46:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:46:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 19:46:34,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:34,119 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:34,119 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:34,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-20 19:46:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936884164] [2024-09-20 19:46:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:46:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936884164] [2024-09-20 19:46:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936884164] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:46:34,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:46:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:46:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069537414] [2024-09-20 19:46:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:46:34,439 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:46:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:34,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:46:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:46:34,464 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:46:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:34,610 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-20 19:46:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 19:46:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-20 19:46:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:34,620 INFO L225 Difference]: With dead ends: 55 [2024-09-20 19:46:34,620 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 19:46:34,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:46:34,625 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:34,626 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:34,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 19:46:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-20 19:46:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-20 19:46:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-20 19:46:34,665 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-20 19:46:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:34,666 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-20 19:46:34,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:46:34,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-20 19:46:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 19:46:34,672 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:34,672 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] [2024-09-20 19:46:34,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:46:34,673 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:34,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-20 19:46:34,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:34,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003747619] [2024-09-20 19:46:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:34,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:46:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003747619] [2024-09-20 19:46:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003747619] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418404336] [2024-09-20 19:46:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:34,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:34,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:34,837 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) [2024-09-20 19:46:34,839 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:46:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:34,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-20 19:46:34,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:46:34,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:46:35,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418404336] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:35,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:35,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-20 19:46:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506549344] [2024-09-20 19:46:35,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:35,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 19:46:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 19:46:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-20 19:46:35,071 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 19:46:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:35,285 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-20 19:46:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 19:46:35,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 22 [2024-09-20 19:46:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:35,292 INFO L225 Difference]: With dead ends: 83 [2024-09-20 19:46:35,292 INFO L226 Difference]: Without dead ends: 59 [2024-09-20 19:46:35,293 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-20 19:46:35,296 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:35,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:46:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-20 19:46:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-20 19:46:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (28), 13 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-20 19:46:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-20 19:46:35,327 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-20 19:46:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:35,328 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-20 19:46:35,328 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 19:46:35,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-20 19:46:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-20 19:46:35,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:35,335 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:35,350 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:46:35,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:35,536 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:35,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-20 19:46:35,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:35,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993341359] [2024-09-20 19:46:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:35,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:35,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:35,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:35,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:35,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:35,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:36,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:46:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-20 19:46:36,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:36,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993341359] [2024-09-20 19:46:36,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993341359] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:36,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861046855] [2024-09-20 19:46:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:36,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:36,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:36,017 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) [2024-09-20 19:46:36,019 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:46:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:36,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 19:46:36,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-20 19:46:36,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-20 19:46:36,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861046855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:36,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:36,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-20 19:46:36,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437958265] [2024-09-20 19:46:36,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:36,799 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 19:46:36,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 19:46:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-20 19:46:36,801 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-20 19:46:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:36,914 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-20 19:46:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:46:36,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-20 19:46:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:36,917 INFO L225 Difference]: With dead ends: 123 [2024-09-20 19:46:36,917 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 19:46:36,919 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-20 19:46:36,920 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:36,920 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 19:46:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 19:46:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-20 19:46:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-20 19:46:36,935 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-20 19:46:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:36,935 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-20 19:46:36,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-20 19:46:36,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-20 19:46:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-20 19:46:36,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:36,939 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:36,955 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:46:37,139 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:37,140 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:37,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-20 19:46:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872699252] [2024-09-20 19:46:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 19:46:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-20 19:46:37,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872699252] [2024-09-20 19:46:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872699252] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037358523] [2024-09-20 19:46:37,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:46:37,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:37,850 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) [2024-09-20 19:46:37,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:46:37,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:46:37,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:37,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-20 19:46:37,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-20 19:46:37,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-20 19:46:39,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037358523] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:39,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-20 19:46:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228471678] [2024-09-20 19:46:39,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:39,549 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 19:46:39,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 19:46:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-20 19:46:39,551 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-20 19:46:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:40,016 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-20 19:46:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 19:46:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) Word has length 82 [2024-09-20 19:46:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:40,024 INFO L225 Difference]: With dead ends: 122 [2024-09-20 19:46:40,024 INFO L226 Difference]: Without dead ends: 74 [2024-09-20 19:46:40,026 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 19:46:40,029 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:40,030 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 192 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:46:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-20 19:46:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-20 19:46:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (25), 12 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-20 19:46:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-20 19:46:40,055 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-20 19:46:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:40,056 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-20 19:46:40,056 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-20 19:46:40,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-20 19:46:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-20 19:46:40,064 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:40,064 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:40,083 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:46:40,265 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:40,266 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:40,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:40,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-20 19:46:40,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865655380] [2024-09-20 19:46:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:40,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 19:46:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:40,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:41,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:41,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-20 19:46:41,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:41,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865655380] [2024-09-20 19:46:41,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865655380] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:41,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683047505] [2024-09-20 19:46:41,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:46:41,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:41,011 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) [2024-09-20 19:46:41,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:46:41,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-20 19:46:41,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:41,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 19:46:41,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-20 19:46:41,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-20 19:46:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683047505] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:42,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:42,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-20 19:46:42,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598992410] [2024-09-20 19:46:42,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:42,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 19:46:42,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 19:46:42,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-20 19:46:42,418 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-20 19:46:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:42,948 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-20 19:46:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-20 19:46:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 108 [2024-09-20 19:46:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:42,951 INFO L225 Difference]: With dead ends: 122 [2024-09-20 19:46:42,951 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 19:46:42,956 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 19:46:42,957 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:42,957 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 239 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:46:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 19:46:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-20 19:46:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-20 19:46:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-20 19:46:42,976 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-20 19:46:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:42,978 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-20 19:46:42,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-20 19:46:42,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-20 19:46:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-20 19:46:42,986 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:42,986 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 20, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:42,998 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:46:43,186 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:43,187 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:43,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-20 19:46:43,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:43,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612647351] [2024-09-20 19:46:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:43,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:43,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 19:46:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 19:46:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 19:46:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 19:46:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-20 19:46:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612647351] [2024-09-20 19:46:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612647351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929934731] [2024-09-20 19:46:44,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:46:44,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:44,207 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) [2024-09-20 19:46:44,208 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 19:46:44,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:46:44,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:44,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-20 19:46:44,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1455 proven. 210 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2024-09-20 19:46:44,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 223 proven. 1020 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2024-09-20 19:46:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929934731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:47,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 15] total 32 [2024-09-20 19:46:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163101468] [2024-09-20 19:46:47,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:47,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 19:46:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:47,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 19:46:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-09-20 19:46:47,044 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 29 states have internal predecessors, (97), 18 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-20 19:46:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:48,922 INFO L93 Difference]: Finished difference Result 181 states and 367 transitions. [2024-09-20 19:46:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-20 19:46:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 29 states have internal predecessors, (97), 18 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) Word has length 227 [2024-09-20 19:46:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:48,926 INFO L225 Difference]: With dead ends: 181 [2024-09-20 19:46:48,926 INFO L226 Difference]: Without dead ends: 120 [2024-09-20 19:46:48,934 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 497 SyntacticMatches, 11 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1851, Invalid=8451, Unknown=0, NotChecked=0, Total=10302 [2024-09-20 19:46:48,936 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 285 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:48,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 275 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 19:46:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-20 19:46:48,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2024-09-20 19:46:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 68 states have internal predecessors, (75), 20 states have call successors, (20), 11 states have call predecessors, (20), 15 states have return successors, (60), 23 states have call predecessors, (60), 19 states have call successors, (60) [2024-09-20 19:46:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 155 transitions. [2024-09-20 19:46:48,973 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 155 transitions. Word has length 227 [2024-09-20 19:46:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:48,973 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 155 transitions. [2024-09-20 19:46:48,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 29 states have internal predecessors, (97), 18 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-20 19:46:48,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:48,974 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 155 transitions. [2024-09-20 19:46:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-20 19:46:48,975 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:48,976 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:48,989 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 19:46:49,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 19:46:49,179 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:49,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-20 19:46:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396666268] [2024-09-20 19:46:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:46:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 19:46:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 19:46:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:46:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 19:46:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-20 19:46:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396666268] [2024-09-20 19:46:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396666268] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734135370] [2024-09-20 19:46:50,338 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 19:46:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:50,340 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) [2024-09-20 19:46:50,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 19:46:50,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-20 19:46:50,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:50,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-20 19:46:50,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-20 19:46:50,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-20 19:46:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734135370] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:54,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-20 19:46:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387991496] [2024-09-20 19:46:54,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:54,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 19:46:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 19:46:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 19:46:54,399 INFO L87 Difference]: Start difference. First operand 103 states and 155 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-20 19:46:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:55,158 INFO L93 Difference]: Finished difference Result 227 states and 402 transitions. [2024-09-20 19:46:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 19:46:55,159 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) Word has length 160 [2024-09-20 19:46:55,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:55,164 INFO L225 Difference]: With dead ends: 227 [2024-09-20 19:46:55,165 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 19:46:55,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=874, Invalid=3818, Unknown=0, NotChecked=0, Total=4692 [2024-09-20 19:46:55,169 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 114 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:55,169 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 326 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:46:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 19:46:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2024-09-20 19:46:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.105263157894737) internal successors, (84), 77 states have internal predecessors, (84), 23 states have call successors, (23), 11 states have call predecessors, (23), 18 states have return successors, (81), 29 states have call predecessors, (81), 22 states have call successors, (81) [2024-09-20 19:46:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 188 transitions. [2024-09-20 19:46:55,236 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 188 transitions. Word has length 160 [2024-09-20 19:46:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:55,237 INFO L474 AbstractCegarLoop]: Abstraction has 118 states and 188 transitions. [2024-09-20 19:46:55,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-20 19:46:55,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 188 transitions. [2024-09-20 19:46:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-20 19:46:55,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:55,241 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:55,257 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 19:46:55,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:55,446 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:55,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 6 times [2024-09-20 19:46:55,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:55,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998346840] [2024-09-20 19:46:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:46:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:46:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:46:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 19:46:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 19:46:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:46:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:46:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 19:46:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:46:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 19:46:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-20 19:46:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998346840] [2024-09-20 19:46:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998346840] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760207257] [2024-09-20 19:46:56,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 19:46:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:56,710 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) [2024-09-20 19:46:56,712 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 19:46:56,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-20 19:46:56,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:56,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 19:46:56,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-20 19:46:57,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 711 proven. 75 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-20 19:47:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760207257] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:03,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 38 [2024-09-20 19:47:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460272300] [2024-09-20 19:47:03,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:03,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 19:47:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 19:47:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 19:47:03,281 INFO L87 Difference]: Start difference. First operand 118 states and 188 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (11), 1 states have call predecessors, (11), 15 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2024-09-20 19:47:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:04,509 INFO L93 Difference]: Finished difference Result 195 states and 346 transitions. [2024-09-20 19:47:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 19:47:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (11), 1 states have call predecessors, (11), 15 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) Word has length 186 [2024-09-20 19:47:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:04,514 INFO L225 Difference]: With dead ends: 195 [2024-09-20 19:47:04,514 INFO L226 Difference]: Without dead ends: 191 [2024-09-20 19:47:04,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 400 SyntacticMatches, 20 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1027, Invalid=4673, Unknown=0, NotChecked=0, Total=5700 [2024-09-20 19:47:04,518 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 69 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:04,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 342 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:47:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-20 19:47:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2024-09-20 19:47:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 92 states have internal predecessors, (99), 24 states have call successors, (24), 11 states have call predecessors, (24), 25 states have return successors, (122), 37 states have call predecessors, (122), 23 states have call successors, (122) [2024-09-20 19:47:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 245 transitions. [2024-09-20 19:47:04,569 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 245 transitions. Word has length 186 [2024-09-20 19:47:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:04,569 INFO L474 AbstractCegarLoop]: Abstraction has 141 states and 245 transitions. [2024-09-20 19:47:04,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (11), 1 states have call predecessors, (11), 15 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2024-09-20 19:47:04,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 245 transitions. [2024-09-20 19:47:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-20 19:47:04,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:04,574 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:04,591 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 19:47:04,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:04,774 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:04,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 7 times [2024-09-20 19:47:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700963292] [2024-09-20 19:47:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 19:47:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:47:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:47:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:47:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:47:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 19:47:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 19:47:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:47:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 19:47:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 19:47:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:47:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-20 19:47:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700963292] [2024-09-20 19:47:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700963292] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749466369] [2024-09-20 19:47:05,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 19:47:05,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:05,881 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) [2024-09-20 19:47:05,882 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 19:47:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:06,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-20 19:47:06,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-20 19:47:06,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-20 19:47:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749466369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:10,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-20 19:47:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790706031] [2024-09-20 19:47:10,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:10,118 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 19:47:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 19:47:10,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 19:47:10,119 INFO L87 Difference]: Start difference. First operand 141 states and 245 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-20 19:47:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:10,865 INFO L93 Difference]: Finished difference Result 285 states and 576 transitions. [2024-09-20 19:47:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-20 19:47:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 173 [2024-09-20 19:47:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:10,868 INFO L225 Difference]: With dead ends: 285 [2024-09-20 19:47:10,869 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:47:10,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=993, Invalid=3977, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 19:47:10,874 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 77 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:10,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 240 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:47:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:47:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:47:10,876 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) [2024-09-20 19:47:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:47:10,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2024-09-20 19:47:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:10,876 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:47:10,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-20 19:47:10,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:47:10,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:47:10,881 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:47:10,900 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 19:47:11,081 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:11,084 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2024-09-20 19:47:11,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:47:20,947 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:47:20,982 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 19:47:20,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:47:20 BoogieIcfgContainer [2024-09-20 19:47:20,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:47:20,984 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:47:20,984 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:47:20,984 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:47:20,985 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:46:34" (3/4) ... [2024-09-20 19:47:20,986 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:47:21,039 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:47:21,040 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:47:21,041 INFO L158 Benchmark]: Toolchain (without parser) took 47711.52ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 853.5MB). Free memory was 151.4MB in the beginning and 996.5MB in the end (delta: -845.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-09-20 19:47:21,041 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 76.5MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:47:21,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.56ms. Allocated memory is still 195.0MB. Free memory was 151.4MB in the beginning and 139.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:47:21,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.09ms. Allocated memory is still 195.0MB. Free memory was 139.7MB in the beginning and 138.8MB in the end (delta: 914.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:47:21,042 INFO L158 Benchmark]: Boogie Preprocessor took 47.49ms. Allocated memory is still 195.0MB. Free memory was 138.8MB in the beginning and 137.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:47:21,043 INFO L158 Benchmark]: RCFGBuilder took 415.96ms. Allocated memory is still 195.0MB. Free memory was 137.7MB in the beginning and 160.0MB in the end (delta: -22.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 19:47:21,043 INFO L158 Benchmark]: TraceAbstraction took 46968.48ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 853.5MB). Free memory was 159.1MB in the beginning and 998.6MB in the end (delta: -839.5MB). Peak memory consumption was 643.0MB. Max. memory is 16.1GB. [2024-09-20 19:47:21,043 INFO L158 Benchmark]: Witness Printer took 55.63ms. Allocated memory is still 1.0GB. Free memory was 998.6MB in the beginning and 996.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:47:21,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 76.5MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.56ms. Allocated memory is still 195.0MB. Free memory was 151.4MB in the beginning and 139.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.09ms. Allocated memory is still 195.0MB. Free memory was 139.7MB in the beginning and 138.8MB in the end (delta: 914.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.49ms. Allocated memory is still 195.0MB. Free memory was 138.8MB in the beginning and 137.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.96ms. Allocated memory is still 195.0MB. Free memory was 137.7MB in the beginning and 160.0MB in the end (delta: -22.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 46968.48ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 853.5MB). Free memory was 159.1MB in the beginning and 998.6MB in the end (delta: -839.5MB). Peak memory consumption was 643.0MB. Max. memory is 16.1GB. * Witness Printer took 55.63ms. Allocated memory is still 1.0GB. Free memory was 998.6MB in the beginning and 996.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.0s, OverallIterations: 9, TraceHistogramMax: 33, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 683 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 646 mSDsluCounter, 1902 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1652 mSDsCounter, 872 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4458 IncrementalHoareTripleChecker+Invalid, 5330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 872 mSolverCounterUnsat, 250 mSDtfsCounter, 4458 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2680 GetRequests, 2178 SyntacticMatches, 75 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7159 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=8, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 27.3s InterpolantComputationTime, 2027 NumberOfCodeBlocks, 1933 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 3008 ConstructedInterpolants, 0 QuantifiedInterpolants, 5872 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2747 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 19128/23808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((\old(n) < \result) || (\old(m) != 0)) && ((0 < \old(m)) || (\old(m) == 0))) RESULT: Ultimate proved your program to be correct! [2024-09-20 19:47:21,081 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE