./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de32.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/in-de32.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 be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:26:56,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:26:57,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:26:57,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:26:57,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:26:57,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:26:57,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:26:57,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:26:57,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:26:57,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:26:57,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:26:57,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:26:57,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:26:57,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:26:57,061 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:26:57,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:26:57,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:26:57,062 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:26:57,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:26:57,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:26:57,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:26:57,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:26:57,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:26:57,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:26:57,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:26:57,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:26:57,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:26:57,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:26:57,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:26:57,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:26:57,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:26:57,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:26:57,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:26:57,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:26:57,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:26:57,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:26:57,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:26:57,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:26:57,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:26:57,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:26:57,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:26:57,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:26:57,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:26:57,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:26:57,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:26:57,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:26:57,389 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:26:57,389 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:26:57,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-09-11 19:26:58,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:26:59,039 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:26:59,040 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-09-11 19:26:59,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f4cb60749/9ab64e5adbe642c6ac436f2a91be0e28/FLAG2da66bb3b [2024-09-11 19:26:59,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f4cb60749/9ab64e5adbe642c6ac436f2a91be0e28 [2024-09-11 19:26:59,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:26:59,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:26:59,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:26:59,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:26:59,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:26:59,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11751d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59, skipping insertion in model container [2024-09-11 19:26:59,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:26:59,235 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/in-de32.c[368,381] [2024-09-11 19:26:59,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:26:59,256 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:26:59,267 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/in-de32.c[368,381] [2024-09-11 19:26:59,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:26:59,287 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:26:59,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59 WrapperNode [2024-09-11 19:26:59,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:26:59,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:26:59,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:26:59,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:26:59,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,320 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-09-11 19:26:59,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:26:59,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:26:59,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:26:59,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:26:59,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,340 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]. [2024-09-11 19:26:59,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:26:59,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:26:59,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:26:59,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:26:59,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (1/1) ... [2024-09-11 19:26:59,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:26:59,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:59,382 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) [2024-09-11 19:26:59,384 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 [2024-09-11 19:26:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:26:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:26:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:26:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:26:59,474 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:26:59,475 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:26:59,592 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-11 19:26:59,592 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:26:59,614 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:26:59,614 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-11 19:26:59,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:26:59 BoogieIcfgContainer [2024-09-11 19:26:59,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:26:59,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:26:59,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:26:59,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:26:59,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:26:59" (1/3) ... [2024-09-11 19:26:59,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a26bb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:26:59, skipping insertion in model container [2024-09-11 19:26:59,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:26:59" (2/3) ... [2024-09-11 19:26:59,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a26bb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:26:59, skipping insertion in model container [2024-09-11 19:26:59,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:26:59" (3/3) ... [2024-09-11 19:26:59,625 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de32.c [2024-09-11 19:26:59,642 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:26:59,642 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:26:59,703 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:26:59,709 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;@5186b945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:26:59,709 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:26:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 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) [2024-09-11 19:26:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-11 19:26:59,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:59,724 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:26:59,724 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:59,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash -593791358, now seen corresponding path program 1 times [2024-09-11 19:26:59,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505697558] [2024-09-11 19:26:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505697558] [2024-09-11 19:27:00,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505697558] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:00,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:00,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:27:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42513417] [2024-09-11 19:27:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:00,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:00,163 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-09-11 19:27:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:00,236 INFO L93 Difference]: Finished difference Result 24 states and 39 transitions. [2024-09-11 19:27:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2024-09-11 19:27:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:00,246 INFO L225 Difference]: With dead ends: 24 [2024-09-11 19:27:00,246 INFO L226 Difference]: Without dead ends: 11 [2024-09-11 19:27:00,248 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:00,252 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:00,253 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-11 19:27:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-11 19:27:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2024-09-11 19:27:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-09-11 19:27:00,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2024-09-11 19:27:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:00,284 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-09-11 19:27:00,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-09-11 19:27:00,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2024-09-11 19:27:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 19:27:00,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:00,286 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:00,286 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:27:00,287 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:00,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1225997519, now seen corresponding path program 1 times [2024-09-11 19:27:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126172358] [2024-09-11 19:27:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:00,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:00,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126172358] [2024-09-11 19:27:00,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126172358] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:00,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:00,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:27:00,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002063251] [2024-09-11 19:27:00,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:00,382 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-11 19:27:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-11 19:27:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:27:00,384 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-09-11 19:27:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:00,412 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-09-11 19:27:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-11 19:27:00,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2024-09-11 19:27:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:00,414 INFO L225 Difference]: With dead ends: 22 [2024-09-11 19:27:00,414 INFO L226 Difference]: Without dead ends: 16 [2024-09-11 19:27:00,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-11 19:27:00,415 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:00,416 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-11 19:27:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-11 19:27:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2024-09-11 19:27:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-09-11 19:27:00,427 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 9 [2024-09-11 19:27:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:00,428 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-09-11 19:27:00,428 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2024-09-11 19:27:00,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-09-11 19:27:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-11 19:27:00,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:00,431 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:00,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:27:00,431 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:00,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1180744990, now seen corresponding path program 1 times [2024-09-11 19:27:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:00,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026675790] [2024-09-11 19:27:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026675790] [2024-09-11 19:27:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026675790] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:27:00,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:27:00,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:27:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148786257] [2024-09-11 19:27:00,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:00,599 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:27:00,600 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-09-11 19:27:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:00,646 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2024-09-11 19:27:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:00,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2024-09-11 19:27:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:00,647 INFO L225 Difference]: With dead ends: 20 [2024-09-11 19:27:00,647 INFO L226 Difference]: Without dead ends: 12 [2024-09-11 19:27:00,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:27:00,649 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:00,649 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:00,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-11 19:27:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-11 19:27:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2024-09-11 19:27:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2024-09-11 19:27:00,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2024-09-11 19:27:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:00,654 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-09-11 19:27:00,655 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-09-11 19:27:00,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2024-09-11 19:27:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:27:00,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:00,656 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:00,656 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 19:27:00,656 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:00,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1468808784, now seen corresponding path program 1 times [2024-09-11 19:27:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532684046] [2024-09-11 19:27:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:00,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532684046] [2024-09-11 19:27:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532684046] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200209398] [2024-09-11 19:27:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:00,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:00,757 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) [2024-09-11 19:27:00,758 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:27:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:00,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:27:00,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:00,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200209398] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:00,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:27:00,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-09-11 19:27:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144092533] [2024-09-11 19:27:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:00,908 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:00,909 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-09-11 19:27:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:00,933 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-09-11 19:27:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:00,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2024-09-11 19:27:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:00,935 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:27:00,935 INFO L226 Difference]: Without dead ends: 11 [2024-09-11 19:27:00,935 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:00,936 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:00,936 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-11 19:27:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-11 19:27:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-09-11 19:27:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-09-11 19:27:00,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 10 [2024-09-11 19:27:00,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:00,942 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-09-11 19:27:00,943 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-09-11 19:27:00,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-09-11 19:27:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:27:00,947 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:00,947 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:00,965 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 19:27:01,153 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:01,154 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:01,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1514061313, now seen corresponding path program 1 times [2024-09-11 19:27:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925312342] [2024-09-11 19:27:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:01,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925312342] [2024-09-11 19:27:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925312342] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682295824] [2024-09-11 19:27:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:01,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:01,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:01,248 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) [2024-09-11 19:27:01,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:27:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:01,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:27:01,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:01,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682295824] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-11 19:27:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 8 [2024-09-11 19:27:01,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330306006] [2024-09-11 19:27:01,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:27:01,350 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:27:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:27:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:01,351 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-09-11 19:27:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:01,364 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-09-11 19:27:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:27:01,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2024-09-11 19:27:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:01,365 INFO L225 Difference]: With dead ends: 16 [2024-09-11 19:27:01,365 INFO L226 Difference]: Without dead ends: 12 [2024-09-11 19:27:01,365 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:01,366 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:01,366 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-11 19:27:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-11 19:27:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2024-09-11 19:27:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-09-11 19:27:01,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2024-09-11 19:27:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:01,371 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-09-11 19:27:01,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-09-11 19:27:01,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-09-11 19:27:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:27:01,372 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:01,372 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:01,389 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 19:27:01,576 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:01,577 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash -307074158, now seen corresponding path program 1 times [2024-09-11 19:27:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366062023] [2024-09-11 19:27:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:01,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:01,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366062023] [2024-09-11 19:27:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366062023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672776948] [2024-09-11 19:27:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:01,722 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) [2024-09-11 19:27:01,723 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 19:27:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:01,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:27:01,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:01,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672776948] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:01,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:01,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-09-11 19:27:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873213758] [2024-09-11 19:27:01,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:01,890 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-11 19:27:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-11 19:27:01,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:27:01,891 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-09-11 19:27:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:01,927 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-09-11 19:27:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:27:01,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) Word has length 11 [2024-09-11 19:27:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:01,928 INFO L225 Difference]: With dead ends: 19 [2024-09-11 19:27:01,928 INFO L226 Difference]: Without dead ends: 15 [2024-09-11 19:27:01,928 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-11 19:27:01,929 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:01,929 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-11 19:27:01,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-09-11 19:27:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2024-09-11 19:27:01,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-09-11 19:27:01,938 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 11 [2024-09-11 19:27:01,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:01,939 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-09-11 19:27:01,939 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-09-11 19:27:01,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-09-11 19:27:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-11 19:27:01,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:01,940 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:01,955 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:02,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:27:02,145 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:02,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash -927698911, now seen corresponding path program 2 times [2024-09-11 19:27:02,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:02,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583174010] [2024-09-11 19:27:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:02,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:02,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583174010] [2024-09-11 19:27:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583174010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355024639] [2024-09-11 19:27:02,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:02,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:02,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:02,208 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) [2024-09-11 19:27:02,210 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 19:27:02,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:02,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:02,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-11 19:27:02,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:02,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355024639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:02,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2024-09-11 19:27:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480008517] [2024-09-11 19:27:02,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:02,347 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:27:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:27:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:02,348 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-09-11 19:27:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:02,434 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-09-11 19:27:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:27:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) Word has length 12 [2024-09-11 19:27:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:02,437 INFO L225 Difference]: With dead ends: 54 [2024-09-11 19:27:02,437 INFO L226 Difference]: Without dead ends: 47 [2024-09-11 19:27:02,437 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:27:02,438 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:02,439 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 39 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-11 19:27:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2024-09-11 19:27:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 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) [2024-09-11 19:27:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-09-11 19:27:02,456 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 12 [2024-09-11 19:27:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:02,456 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-09-11 19:27:02,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-09-11 19:27:02,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-09-11 19:27:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-11 19:27:02,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:02,458 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:02,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 19:27:02,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:02,660 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:02,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:02,660 INFO L85 PathProgramCache]: Analyzing trace with hash 475129488, now seen corresponding path program 3 times [2024-09-11 19:27:02,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:02,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132111831] [2024-09-11 19:27:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:02,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132111831] [2024-09-11 19:27:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132111831] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406102603] [2024-09-11 19:27:02,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:02,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:02,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:02,730 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) [2024-09-11 19:27:02,731 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 19:27:02,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-11 19:27:02,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:02,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-11 19:27:02,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:02,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:02,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406102603] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:02,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:02,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-09-11 19:27:02,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042052773] [2024-09-11 19:27:02,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:02,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:27:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:27:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:02,880 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) [2024-09-11 19:27:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:03,047 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2024-09-11 19:27:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:27:03,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) Word has length 12 [2024-09-11 19:27:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:03,049 INFO L225 Difference]: With dead ends: 50 [2024-09-11 19:27:03,049 INFO L226 Difference]: Without dead ends: 36 [2024-09-11 19:27:03,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:27:03,050 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:03,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 47 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-11 19:27:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-09-11 19:27:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 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) [2024-09-11 19:27:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2024-09-11 19:27:03,067 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 12 [2024-09-11 19:27:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:03,068 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2024-09-11 19:27:03,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) [2024-09-11 19:27:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-09-11 19:27:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:27:03,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:03,069 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:03,086 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 19:27:03,273 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-11 19:27:03,274 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:03,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1847797890, now seen corresponding path program 4 times [2024-09-11 19:27:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599627210] [2024-09-11 19:27:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:03,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:03,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599627210] [2024-09-11 19:27:03,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599627210] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:03,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142533102] [2024-09-11 19:27:03,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:03,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:03,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:03,398 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) [2024-09-11 19:27:03,400 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 19:27:03,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:03,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:03,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:27:03,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:03,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142533102] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:03,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:03,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-09-11 19:27:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704917050] [2024-09-11 19:27:03,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:03,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 19:27:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 19:27:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:27:03,561 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-09-11 19:27:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:03,631 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2024-09-11 19:27:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 19:27:03,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) Word has length 14 [2024-09-11 19:27:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:03,632 INFO L225 Difference]: With dead ends: 53 [2024-09-11 19:27:03,632 INFO L226 Difference]: Without dead ends: 49 [2024-09-11 19:27:03,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:27:03,633 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:03,633 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-11 19:27:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2024-09-11 19:27:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 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) [2024-09-11 19:27:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2024-09-11 19:27:03,674 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 14 [2024-09-11 19:27:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:03,675 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2024-09-11 19:27:03,675 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2024-09-11 19:27:03,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2024-09-11 19:27:03,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:27:03,676 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:03,676 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:03,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-11 19:27:03,877 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:03,877 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:03,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1448825137, now seen corresponding path program 5 times [2024-09-11 19:27:03,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:03,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336794198] [2024-09-11 19:27:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:03,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:03,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:03,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336794198] [2024-09-11 19:27:03,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336794198] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:03,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955880199] [2024-09-11 19:27:03,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:03,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:03,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:03,954 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) [2024-09-11 19:27:03,956 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 19:27:04,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:27:04,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:04,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:27:04,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:04,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955880199] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:04,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:04,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-09-11 19:27:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230488682] [2024-09-11 19:27:04,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:04,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:27:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:27:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:27:04,105 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) [2024-09-11 19:27:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:04,254 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2024-09-11 19:27:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:27:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) Word has length 15 [2024-09-11 19:27:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:04,256 INFO L225 Difference]: With dead ends: 82 [2024-09-11 19:27:04,257 INFO L226 Difference]: Without dead ends: 74 [2024-09-11 19:27:04,258 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:27:04,258 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:04,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 60 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:27:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-11 19:27:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2024-09-11 19:27:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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) [2024-09-11 19:27:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-09-11 19:27:04,284 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 15 [2024-09-11 19:27:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:04,284 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-09-11 19:27:04,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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) [2024-09-11 19:27:04,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-09-11 19:27:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:27:04,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:04,286 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:04,302 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:04,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:04,487 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:04,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1986832546, now seen corresponding path program 6 times [2024-09-11 19:27:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784420381] [2024-09-11 19:27:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:04,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:04,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784420381] [2024-09-11 19:27:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784420381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:04,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834712437] [2024-09-11 19:27:04,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:04,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:04,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:04,574 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) [2024-09-11 19:27:04,575 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 19:27:04,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-11 19:27:04,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:04,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:27:04,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:04,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:04,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834712437] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:04,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:04,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-11 19:27:04,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010215766] [2024-09-11 19:27:04,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:04,740 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:27:04,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:04,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:27:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:04,741 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) [2024-09-11 19:27:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:04,843 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2024-09-11 19:27:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:27:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) Word has length 15 [2024-09-11 19:27:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:04,845 INFO L225 Difference]: With dead ends: 59 [2024-09-11 19:27:04,845 INFO L226 Difference]: Without dead ends: 47 [2024-09-11 19:27:04,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:27:04,847 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:04,847 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-11 19:27:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-11 19:27:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.434782608695652) internal successors, (66), 46 states have internal predecessors, (66), 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) [2024-09-11 19:27:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2024-09-11 19:27:04,869 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 15 [2024-09-11 19:27:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:04,871 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2024-09-11 19:27:04,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) [2024-09-11 19:27:04,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2024-09-11 19:27:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:27:04,872 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:04,872 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:04,890 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-11 19:27:05,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:05,082 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:05,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1372418386, now seen corresponding path program 7 times [2024-09-11 19:27:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996209110] [2024-09-11 19:27:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:05,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996209110] [2024-09-11 19:27:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996209110] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:05,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937593953] [2024-09-11 19:27:05,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:05,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:05,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:05,180 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:05,183 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 19:27:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:05,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:27:05,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:05,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 19:27:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937593953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:05,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:05,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-09-11 19:27:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366525741] [2024-09-11 19:27:05,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:05,344 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:27:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:27:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:05,345 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2024-09-11 19:27:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:05,452 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-09-11 19:27:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:27:05,452 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) Word has length 15 [2024-09-11 19:27:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:05,453 INFO L225 Difference]: With dead ends: 66 [2024-09-11 19:27:05,453 INFO L226 Difference]: Without dead ends: 51 [2024-09-11 19:27:05,453 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:27:05,454 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:05,454 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-11 19:27:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-11 19:27:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 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) [2024-09-11 19:27:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-09-11 19:27:05,479 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 15 [2024-09-11 19:27:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:05,479 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-09-11 19:27:05,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2024-09-11 19:27:05,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-09-11 19:27:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-11 19:27:05,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:05,481 INFO L216 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:05,497 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-11 19:27:05,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 19:27:05,685 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:05,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1927118544, now seen corresponding path program 8 times [2024-09-11 19:27:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480738425] [2024-09-11 19:27:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 19:27:05,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480738425] [2024-09-11 19:27:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480738425] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236498607] [2024-09-11 19:27:05,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:05,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:05,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:05,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 19:27:05,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:05,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:05,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:27:05,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:05,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236498607] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:06,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 17 [2024-09-11 19:27:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827604220] [2024-09-11 19:27:06,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:06,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:27:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:27:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:27:06,029 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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) [2024-09-11 19:27:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:06,220 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-09-11 19:27:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:27:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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) Word has length 16 [2024-09-11 19:27:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:06,222 INFO L225 Difference]: With dead ends: 76 [2024-09-11 19:27:06,222 INFO L226 Difference]: Without dead ends: 67 [2024-09-11 19:27:06,222 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:27:06,222 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:06,223 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 59 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-11 19:27:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2024-09-11 19:27:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 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) [2024-09-11 19:27:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-09-11 19:27:06,242 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 16 [2024-09-11 19:27:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:06,243 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-09-11 19:27:06,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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) [2024-09-11 19:27:06,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:06,243 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-09-11 19:27:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-11 19:27:06,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:06,244 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:06,261 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-11 19:27:06,448 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 19:27:06,449 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:06,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1519806738, now seen corresponding path program 9 times [2024-09-11 19:27:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391430708] [2024-09-11 19:27:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:06,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:06,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391430708] [2024-09-11 19:27:06,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391430708] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:06,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409688995] [2024-09-11 19:27:06,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:06,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:06,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:06,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:06,594 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 19:27:06,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:27:06,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:06,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-11 19:27:06,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:06,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:06,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409688995] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:06,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:06,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-09-11 19:27:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587797751] [2024-09-11 19:27:06,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:06,756 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:27:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:27:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:06,757 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2024-09-11 19:27:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:06,850 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2024-09-11 19:27:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:27:06,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) Word has length 17 [2024-09-11 19:27:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:06,851 INFO L225 Difference]: With dead ends: 85 [2024-09-11 19:27:06,852 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 19:27:06,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 11 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:27:06,853 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:06,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 19:27:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2024-09-11 19:27:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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) [2024-09-11 19:27:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-09-11 19:27:06,874 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 17 [2024-09-11 19:27:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:06,874 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-09-11 19:27:06,874 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2024-09-11 19:27:06,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:06,875 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-09-11 19:27:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 19:27:06,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:06,876 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:06,892 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 19:27:07,076 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 19:27:07,076 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:07,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash -630605488, now seen corresponding path program 10 times [2024-09-11 19:27:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799668194] [2024-09-11 19:27:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:07,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799668194] [2024-09-11 19:27:07,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799668194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:07,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764912324] [2024-09-11 19:27:07,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:07,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:07,181 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:07,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 19:27:07,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:07,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:07,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-11 19:27:07,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:07,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:07,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764912324] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:07,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:07,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 19 [2024-09-11 19:27:07,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033417073] [2024-09-11 19:27:07,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:07,445 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:27:07,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:27:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:27:07,446 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 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) [2024-09-11 19:27:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:08,422 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2024-09-11 19:27:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-11 19:27:08,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 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) Word has length 18 [2024-09-11 19:27:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:08,423 INFO L225 Difference]: With dead ends: 99 [2024-09-11 19:27:08,424 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 19:27:08,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=356, Invalid=1900, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:27:08,425 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 91 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:08,426 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 80 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:08,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 19:27:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2024-09-11 19:27:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 states have internal predecessors, (75), 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) [2024-09-11 19:27:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-11 19:27:08,458 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 18 [2024-09-11 19:27:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:08,458 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-11 19:27:08,458 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 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) [2024-09-11 19:27:08,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-11 19:27:08,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 19:27:08,459 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:08,460 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:08,476 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:08,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:27:08,660 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:08,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash 39467650, now seen corresponding path program 11 times [2024-09-11 19:27:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:08,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026690031] [2024-09-11 19:27:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:08,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026690031] [2024-09-11 19:27:08,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026690031] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672210191] [2024-09-11 19:27:08,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:08,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:08,827 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-11 19:27:08,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-11 19:27:08,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:08,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:27:08,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:08,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:09,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672210191] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:09,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:09,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-11 19:27:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364684856] [2024-09-11 19:27:09,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:09,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:27:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:27:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:27:09,028 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-09-11 19:27:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:09,137 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2024-09-11 19:27:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:27:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 20 [2024-09-11 19:27:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:09,138 INFO L225 Difference]: With dead ends: 85 [2024-09-11 19:27:09,138 INFO L226 Difference]: Without dead ends: 76 [2024-09-11 19:27:09,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:27:09,139 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:09,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-11 19:27:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2024-09-11 19:27:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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) [2024-09-11 19:27:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-09-11 19:27:09,188 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 20 [2024-09-11 19:27:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:09,188 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-09-11 19:27:09,188 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-09-11 19:27:09,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-09-11 19:27:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 19:27:09,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:09,190 INFO L216 NwaCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:09,209 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:09,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-11 19:27:09,395 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:09,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash -273828190, now seen corresponding path program 12 times [2024-09-11 19:27:09,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:09,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119214733] [2024-09-11 19:27:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:09,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:09,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119214733] [2024-09-11 19:27:09,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119214733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:09,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259721583] [2024-09-11 19:27:09,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:09,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:09,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:09,553 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-11 19:27:09,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:27:09,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:09,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:27:09,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:09,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-11 19:27:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259721583] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:09,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:09,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2024-09-11 19:27:09,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047959961] [2024-09-11 19:27:09,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:09,795 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:27:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:09,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:27:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:27:09,797 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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) [2024-09-11 19:27:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:10,255 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2024-09-11 19:27:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 19:27:10,256 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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) Word has length 20 [2024-09-11 19:27:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:10,256 INFO L225 Difference]: With dead ends: 86 [2024-09-11 19:27:10,257 INFO L226 Difference]: Without dead ends: 71 [2024-09-11 19:27:10,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:27:10,258 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:10,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 94 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-11 19:27:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-09-11 19:27:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 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) [2024-09-11 19:27:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-09-11 19:27:10,280 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 20 [2024-09-11 19:27:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:10,280 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-09-11 19:27:10,281 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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) [2024-09-11 19:27:10,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-09-11 19:27:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-11 19:27:10,281 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:10,281 INFO L216 NwaCegarLoop]: trace histogram [7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:10,298 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-11 19:27:10,482 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-11 19:27:10,482 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:10,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1688897729, now seen corresponding path program 13 times [2024-09-11 19:27:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674573861] [2024-09-11 19:27:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:27:10,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674573861] [2024-09-11 19:27:10,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674573861] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645678218] [2024-09-11 19:27:10,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:10,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:10,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:10,650 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:10,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-11 19:27:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:10,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:27:10,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:10,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645678218] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:10,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 8] total 23 [2024-09-11 19:27:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628541372] [2024-09-11 19:27:10,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:10,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:27:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:27:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:27:10,892 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 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) [2024-09-11 19:27:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:11,189 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2024-09-11 19:27:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:27:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 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) Word has length 20 [2024-09-11 19:27:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:11,191 INFO L225 Difference]: With dead ends: 116 [2024-09-11 19:27:11,191 INFO L226 Difference]: Without dead ends: 107 [2024-09-11 19:27:11,192 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:27:11,193 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 58 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:11,193 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 108 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-11 19:27:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 67. [2024-09-11 19:27:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2024-09-11 19:27:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-09-11 19:27:11,218 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 20 [2024-09-11 19:27:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:11,219 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-09-11 19:27:11,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 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) [2024-09-11 19:27:11,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-09-11 19:27:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-11 19:27:11,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:11,223 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:11,240 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-11 19:27:11,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-11 19:27:11,423 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:11,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1440760222, now seen corresponding path program 14 times [2024-09-11 19:27:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:11,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332233839] [2024-09-11 19:27:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:11,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:11,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332233839] [2024-09-11 19:27:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332233839] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075163621] [2024-09-11 19:27:11,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:11,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:11,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:11,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:11,569 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-11 19:27:11,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:11,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:11,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-11 19:27:11,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:11,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075163621] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:11,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:11,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 23 [2024-09-11 19:27:11,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576521132] [2024-09-11 19:27:11,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:11,846 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:27:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:27:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:27:11,847 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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) [2024-09-11 19:27:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:13,193 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2024-09-11 19:27:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-11 19:27:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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) Word has length 21 [2024-09-11 19:27:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:13,194 INFO L225 Difference]: With dead ends: 133 [2024-09-11 19:27:13,194 INFO L226 Difference]: Without dead ends: 106 [2024-09-11 19:27:13,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=678, Invalid=3744, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 19:27:13,196 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 146 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:13,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 94 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-11 19:27:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2024-09-11 19:27:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 75 states have internal predecessors, (92), 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) [2024-09-11 19:27:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2024-09-11 19:27:13,235 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 21 [2024-09-11 19:27:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:13,236 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2024-09-11 19:27:13,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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) [2024-09-11 19:27:13,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2024-09-11 19:27:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:27:13,237 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:13,237 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:13,254 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-11 19:27:13,437 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:13,437 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:13,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash 493700754, now seen corresponding path program 15 times [2024-09-11 19:27:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795595400] [2024-09-11 19:27:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:13,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:13,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:13,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795595400] [2024-09-11 19:27:13,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795595400] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:13,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528101183] [2024-09-11 19:27:13,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:13,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:13,612 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:13,613 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-11 19:27:13,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:27:13,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:13,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-11 19:27:13,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:13,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528101183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:13,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-09-11 19:27:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036801119] [2024-09-11 19:27:13,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:13,817 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:27:13,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:13,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:27:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:27:13,821 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2024-09-11 19:27:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:13,913 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2024-09-11 19:27:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:27:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) Word has length 23 [2024-09-11 19:27:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:13,914 INFO L225 Difference]: With dead ends: 99 [2024-09-11 19:27:13,914 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 19:27:13,914 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:27:13,915 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:13,915 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 19:27:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2024-09-11 19:27:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 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) [2024-09-11 19:27:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-09-11 19:27:13,952 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 23 [2024-09-11 19:27:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:13,952 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-09-11 19:27:13,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2024-09-11 19:27:13,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-09-11 19:27:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:27:13,953 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:13,953 INFO L216 NwaCegarLoop]: trace histogram [8, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:13,967 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-11 19:27:14,157 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,158 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:14,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1792301602, now seen corresponding path program 16 times [2024-09-11 19:27:14,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:14,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541871553] [2024-09-11 19:27:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541871553] [2024-09-11 19:27:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541871553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841897092] [2024-09-11 19:27:14,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:14,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:14,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:14,338 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:14,339 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-11 19:27:14,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:14,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:14,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:27:14,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:14,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841897092] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:14,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 10] total 27 [2024-09-11 19:27:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015447651] [2024-09-11 19:27:14,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:14,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-11 19:27:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-11 19:27:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:27:14,646 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) [2024-09-11 19:27:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:15,310 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2024-09-11 19:27:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-11 19:27:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) Word has length 23 [2024-09-11 19:27:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:15,312 INFO L225 Difference]: With dead ends: 116 [2024-09-11 19:27:15,312 INFO L226 Difference]: Without dead ends: 95 [2024-09-11 19:27:15,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=2037, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:27:15,313 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:15,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 148 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-11 19:27:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2024-09-11 19:27:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.197674418604651) internal successors, (103), 86 states have internal predecessors, (103), 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) [2024-09-11 19:27:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-09-11 19:27:15,342 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 23 [2024-09-11 19:27:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:15,342 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-09-11 19:27:15,343 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) [2024-09-11 19:27:15,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-09-11 19:27:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-11 19:27:15,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:15,343 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:15,355 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-11 19:27:15,544 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-11 19:27:15,544 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:15,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1382259728, now seen corresponding path program 17 times [2024-09-11 19:27:15,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306894459] [2024-09-11 19:27:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306894459] [2024-09-11 19:27:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306894459] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035102635] [2024-09-11 19:27:15,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:15,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:15,710 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:15,712 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-11 19:27:15,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:27:15,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:15,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:27:15,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:15,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 19:27:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035102635] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:16,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:16,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 32 [2024-09-11 19:27:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357631620] [2024-09-11 19:27:16,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:16,118 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:27:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:27:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:27:16,119 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 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) [2024-09-11 19:27:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:16,717 INFO L93 Difference]: Finished difference Result 162 states and 198 transitions. [2024-09-11 19:27:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-11 19:27:16,717 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 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) Word has length 24 [2024-09-11 19:27:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:16,718 INFO L225 Difference]: With dead ends: 162 [2024-09-11 19:27:16,719 INFO L226 Difference]: Without dead ends: 144 [2024-09-11 19:27:16,719 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:27:16,720 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 104 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:16,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 117 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:27:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-11 19:27:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 90. [2024-09-11 19:27:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.202247191011236) internal successors, (107), 89 states have internal predecessors, (107), 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) [2024-09-11 19:27:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2024-09-11 19:27:16,756 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 24 [2024-09-11 19:27:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:16,757 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2024-09-11 19:27:16,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 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) [2024-09-11 19:27:16,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2024-09-11 19:27:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 19:27:16,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:16,757 INFO L216 NwaCegarLoop]: trace histogram [10, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:16,774 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-11 19:27:16,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-11 19:27:16,962 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:16,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -860812111, now seen corresponding path program 18 times [2024-09-11 19:27:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:16,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357412343] [2024-09-11 19:27:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:16,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 19:27:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357412343] [2024-09-11 19:27:17,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357412343] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736371424] [2024-09-11 19:27:17,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:17,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:17,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:17,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:17,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-11 19:27:17,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:27:17,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:17,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:27:17,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:27:17,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:27:17,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736371424] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:17,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:17,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 30 [2024-09-11 19:27:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594933488] [2024-09-11 19:27:17,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:17,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:27:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:27:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:27:17,630 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2024-09-11 19:27:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:18,618 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2024-09-11 19:27:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-11 19:27:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) Word has length 25 [2024-09-11 19:27:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:18,619 INFO L225 Difference]: With dead ends: 133 [2024-09-11 19:27:18,619 INFO L226 Difference]: Without dead ends: 122 [2024-09-11 19:27:18,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=844, Invalid=3848, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:27:18,621 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 163 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:18,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 175 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-11 19:27:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2024-09-11 19:27:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 88 states have internal predecessors, (104), 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) [2024-09-11 19:27:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-09-11 19:27:18,652 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 25 [2024-09-11 19:27:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:18,652 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-09-11 19:27:18,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2024-09-11 19:27:18,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-09-11 19:27:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:27:18,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:18,653 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:18,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:18,854 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-11 19:27:18,854 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:18,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash -553341822, now seen corresponding path program 19 times [2024-09-11 19:27:18,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:18,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567790018] [2024-09-11 19:27:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567790018] [2024-09-11 19:27:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567790018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057179938] [2024-09-11 19:27:19,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:19,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:19,062 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:19,064 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-11 19:27:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:19,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:27:19,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:19,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:19,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057179938] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:19,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:19,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2024-09-11 19:27:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428676652] [2024-09-11 19:27:19,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:19,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:27:19,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:27:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:27:19,290 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2024-09-11 19:27:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:19,420 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2024-09-11 19:27:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:27:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) Word has length 26 [2024-09-11 19:27:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:19,421 INFO L225 Difference]: With dead ends: 141 [2024-09-11 19:27:19,421 INFO L226 Difference]: Without dead ends: 130 [2024-09-11 19:27:19,421 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 18 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:27:19,422 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:19,422 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-11 19:27:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2024-09-11 19:27:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 96 states have internal predecessors, (115), 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) [2024-09-11 19:27:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2024-09-11 19:27:19,456 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 26 [2024-09-11 19:27:19,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:19,456 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2024-09-11 19:27:19,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2024-09-11 19:27:19,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2024-09-11 19:27:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:27:19,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:19,457 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:19,470 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-11 19:27:19,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-11 19:27:19,661 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:19,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2123332574, now seen corresponding path program 20 times [2024-09-11 19:27:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:19,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336466284] [2024-09-11 19:27:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:19,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:19,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336466284] [2024-09-11 19:27:19,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336466284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:19,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524707669] [2024-09-11 19:27:19,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:19,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:19,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:19,876 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:19,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-11 19:27:19,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:19,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:19,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 19:27:19,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:19,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:20,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524707669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:20,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:20,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 31 [2024-09-11 19:27:20,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934122595] [2024-09-11 19:27:20,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:20,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:27:20,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:27:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:27:20,397 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 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) [2024-09-11 19:27:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:24,728 INFO L93 Difference]: Finished difference Result 217 states and 265 transitions. [2024-09-11 19:27:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-09-11 19:27:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 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) Word has length 27 [2024-09-11 19:27:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:24,733 INFO L225 Difference]: With dead ends: 217 [2024-09-11 19:27:24,733 INFO L226 Difference]: Without dead ends: 180 [2024-09-11 19:27:24,739 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3708 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1949, Invalid=10933, Unknown=0, NotChecked=0, Total=12882 [2024-09-11 19:27:24,740 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 336 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:24,740 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 118 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:27:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-11 19:27:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 120. [2024-09-11 19:27:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 119 states have internal predecessors, (144), 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) [2024-09-11 19:27:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2024-09-11 19:27:24,892 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 27 [2024-09-11 19:27:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:24,893 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2024-09-11 19:27:24,893 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 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) [2024-09-11 19:27:24,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2024-09-11 19:27:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:27:24,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:24,894 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:24,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:25,098 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-11 19:27:25,099 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:25,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash 5440530, now seen corresponding path program 21 times [2024-09-11 19:27:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162227185] [2024-09-11 19:27:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162227185] [2024-09-11 19:27:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162227185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:25,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479233020] [2024-09-11 19:27:25,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:25,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:25,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:25,343 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:25,344 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-11 19:27:25,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-11 19:27:25,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:25,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 19:27:25,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:25,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479233020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:25,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-09-11 19:27:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447649914] [2024-09-11 19:27:25,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:25,626 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:27:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:27:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:25,626 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2024-09-11 19:27:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:25,783 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2024-09-11 19:27:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:27:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) Word has length 29 [2024-09-11 19:27:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:25,784 INFO L225 Difference]: With dead ends: 152 [2024-09-11 19:27:25,784 INFO L226 Difference]: Without dead ends: 140 [2024-09-11 19:27:25,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 19 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:27:25,785 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:25,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-11 19:27:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2024-09-11 19:27:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 126 states have internal predecessors, (153), 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) [2024-09-11 19:27:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2024-09-11 19:27:25,838 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 29 [2024-09-11 19:27:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:25,839 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2024-09-11 19:27:25,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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) [2024-09-11 19:27:25,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2024-09-11 19:27:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:27:25,839 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:25,839 INFO L216 NwaCegarLoop]: trace histogram [11, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:25,851 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-11 19:27:26,040 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-11 19:27:26,040 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:26,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash -442528957, now seen corresponding path program 22 times [2024-09-11 19:27:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666416250] [2024-09-11 19:27:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:26,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:26,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666416250] [2024-09-11 19:27:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666416250] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:26,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773451436] [2024-09-11 19:27:26,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:26,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:26,303 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:26,304 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-11 19:27:26,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:26,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:26,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-11 19:27:26,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:26,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-09-11 19:27:26,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773451436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:26,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 12] total 34 [2024-09-11 19:27:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71251746] [2024-09-11 19:27:26,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:26,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:27:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:27:26,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:27:26,683 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 34 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2024-09-11 19:27:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:28,073 INFO L93 Difference]: Finished difference Result 173 states and 211 transitions. [2024-09-11 19:27:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-11 19:27:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) Word has length 29 [2024-09-11 19:27:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:28,074 INFO L225 Difference]: With dead ends: 173 [2024-09-11 19:27:28,074 INFO L226 Difference]: Without dead ends: 141 [2024-09-11 19:27:28,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=525, Invalid=4167, Unknown=0, NotChecked=0, Total=4692 [2024-09-11 19:27:28,076 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:28,076 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 223 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:27:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-11 19:27:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 130. [2024-09-11 19:27:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.186046511627907) internal successors, (153), 129 states have internal predecessors, (153), 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) [2024-09-11 19:27:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-09-11 19:27:28,136 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 29 [2024-09-11 19:27:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:28,136 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-09-11 19:27:28,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2024-09-11 19:27:28,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-09-11 19:27:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-11 19:27:28,137 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:28,137 INFO L216 NwaCegarLoop]: trace histogram [12, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:28,149 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-11 19:27:28,338 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-11 19:27:28,338 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:28,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash 939081186, now seen corresponding path program 23 times [2024-09-11 19:27:28,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:28,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441667516] [2024-09-11 19:27:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 19:27:28,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:28,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441667516] [2024-09-11 19:27:28,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441667516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:28,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647081307] [2024-09-11 19:27:28,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:28,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:28,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:28,630 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:28,632 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-11 19:27:28,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-11 19:27:28,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:28,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-11 19:27:28,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:28,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:27:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647081307] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:29,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 12] total 36 [2024-09-11 19:27:29,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057574587] [2024-09-11 19:27:29,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:29,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 19:27:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 19:27:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:27:29,084 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 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) [2024-09-11 19:27:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:29,987 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2024-09-11 19:27:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-11 19:27:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 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) Word has length 29 [2024-09-11 19:27:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:29,989 INFO L225 Difference]: With dead ends: 228 [2024-09-11 19:27:29,989 INFO L226 Difference]: Without dead ends: 217 [2024-09-11 19:27:29,990 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=918, Invalid=2864, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:27:29,990 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 133 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:29,990 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 240 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-11 19:27:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 130. [2024-09-11 19:27:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 129 states have internal predecessors, (151), 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) [2024-09-11 19:27:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2024-09-11 19:27:30,054 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 29 [2024-09-11 19:27:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:30,055 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2024-09-11 19:27:30,055 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 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) [2024-09-11 19:27:30,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2024-09-11 19:27:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:27:30,056 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:30,056 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:30,069 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-11 19:27:30,260 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-11 19:27:30,260 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:30,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2094559536, now seen corresponding path program 24 times [2024-09-11 19:27:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:30,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370335323] [2024-09-11 19:27:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:30,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370335323] [2024-09-11 19:27:30,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370335323] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448371226] [2024-09-11 19:27:30,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:30,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:30,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:30,498 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:30,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-11 19:27:30,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-11 19:27:30,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:30,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 19:27:30,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:30,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-11 19:27:31,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448371226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:31,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:31,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 42 [2024-09-11 19:27:31,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886269524] [2024-09-11 19:27:31,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:31,079 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:27:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:27:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:27:31,080 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 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) [2024-09-11 19:27:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:32,517 INFO L93 Difference]: Finished difference Result 246 states and 281 transitions. [2024-09-11 19:27:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-09-11 19:27:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 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) Word has length 30 [2024-09-11 19:27:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:32,519 INFO L225 Difference]: With dead ends: 246 [2024-09-11 19:27:32,519 INFO L226 Difference]: Without dead ends: 224 [2024-09-11 19:27:32,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=975, Invalid=3855, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 19:27:32,520 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 241 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:32,521 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 142 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:27:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-11 19:27:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 127. [2024-09-11 19:27:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1666666666666667) internal successors, (147), 126 states have internal predecessors, (147), 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) [2024-09-11 19:27:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2024-09-11 19:27:32,579 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 30 [2024-09-11 19:27:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:32,579 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2024-09-11 19:27:32,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 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) [2024-09-11 19:27:32,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2024-09-11 19:27:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-11 19:27:32,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:32,580 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:32,592 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-11 19:27:32,780 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:32,781 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:32,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:32,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2115600766, now seen corresponding path program 25 times [2024-09-11 19:27:32,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:32,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806800812] [2024-09-11 19:27:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:32,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:33,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806800812] [2024-09-11 19:27:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806800812] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826424834] [2024-09-11 19:27:33,045 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:27:33,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:33,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:33,046 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:33,047 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-11 19:27:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:33,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:27:33,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:33,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826424834] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:33,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2024-09-11 19:27:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401874886] [2024-09-11 19:27:33,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:33,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:27:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:27:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:27:33,304 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2024-09-11 19:27:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:33,528 INFO L93 Difference]: Finished difference Result 220 states and 251 transitions. [2024-09-11 19:27:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 19:27:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) Word has length 32 [2024-09-11 19:27:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:33,529 INFO L225 Difference]: With dead ends: 220 [2024-09-11 19:27:33,529 INFO L226 Difference]: Without dead ends: 207 [2024-09-11 19:27:33,530 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 22 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:27:33,530 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:33,531 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-11 19:27:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 143. [2024-09-11 19:27:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 142 states have internal predecessors, (170), 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) [2024-09-11 19:27:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2024-09-11 19:27:33,605 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 32 [2024-09-11 19:27:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:33,606 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2024-09-11 19:27:33,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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) [2024-09-11 19:27:33,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2024-09-11 19:27:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 19:27:33,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:33,606 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:33,618 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:33,807 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:33,807 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:33,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1645672930, now seen corresponding path program 26 times [2024-09-11 19:27:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595745159] [2024-09-11 19:27:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:33,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:34,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595745159] [2024-09-11 19:27:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595745159] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:34,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492888899] [2024-09-11 19:27:34,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:27:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:34,079 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:34,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-11 19:27:34,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:27:34,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:34,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:27:34,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:34,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:27:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492888899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:34,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 39 [2024-09-11 19:27:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401335584] [2024-09-11 19:27:34,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:34,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:27:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:27:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:27:34,646 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand has 40 states, 40 states have (on average 1.225) internal successors, (49), 39 states have internal predecessors, (49), 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) [2024-09-11 19:27:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:46,256 INFO L93 Difference]: Finished difference Result 313 states and 376 transitions. [2024-09-11 19:27:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-09-11 19:27:46,257 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.225) internal successors, (49), 39 states have internal predecessors, (49), 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) Word has length 33 [2024-09-11 19:27:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:46,258 INFO L225 Difference]: With dead ends: 313 [2024-09-11 19:27:46,258 INFO L226 Difference]: Without dead ends: 261 [2024-09-11 19:27:46,260 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9895 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=4521, Invalid=25235, Unknown=0, NotChecked=0, Total=29756 [2024-09-11 19:27:46,260 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 701 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:46,261 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 141 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:27:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-09-11 19:27:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 167. [2024-09-11 19:27:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 166 states have internal predecessors, (199), 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) [2024-09-11 19:27:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 199 transitions. [2024-09-11 19:27:46,355 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 199 transitions. Word has length 33 [2024-09-11 19:27:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:46,355 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 199 transitions. [2024-09-11 19:27:46,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.225) internal successors, (49), 39 states have internal predecessors, (49), 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) [2024-09-11 19:27:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 199 transitions. [2024-09-11 19:27:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:27:46,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:46,356 INFO L216 NwaCegarLoop]: trace histogram [15, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:46,368 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-11 19:27:46,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:46,557 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:46,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash -861960767, now seen corresponding path program 27 times [2024-09-11 19:27:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:46,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097111198] [2024-09-11 19:27:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097111198] [2024-09-11 19:27:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097111198] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138456732] [2024-09-11 19:27:46,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:27:46,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:46,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:46,917 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:46,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-11 19:27:46,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-11 19:27:46,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:46,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:27:46,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:27:47,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:27:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138456732] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:47,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14, 14] total 42 [2024-09-11 19:27:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928333748] [2024-09-11 19:27:47,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:47,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:27:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:27:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1576, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:27:47,563 INFO L87 Difference]: Start difference. First operand 167 states and 199 transitions. Second operand has 42 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 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) [2024-09-11 19:27:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:51,223 INFO L93 Difference]: Finished difference Result 260 states and 318 transitions. [2024-09-11 19:27:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-09-11 19:27:51,224 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 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) Word has length 34 [2024-09-11 19:27:51,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:51,225 INFO L225 Difference]: With dead ends: 260 [2024-09-11 19:27:51,225 INFO L226 Difference]: Without dead ends: 221 [2024-09-11 19:27:51,227 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3505 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1183, Invalid=14317, Unknown=0, NotChecked=0, Total=15500 [2024-09-11 19:27:51,227 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:51,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 403 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-11 19:27:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-09-11 19:27:51,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 192. [2024-09-11 19:27:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.162303664921466) internal successors, (222), 191 states have internal predecessors, (222), 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) [2024-09-11 19:27:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 222 transitions. [2024-09-11 19:27:51,351 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 222 transitions. Word has length 34 [2024-09-11 19:27:51,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:51,351 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 222 transitions. [2024-09-11 19:27:51,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 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) [2024-09-11 19:27:51,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 222 transitions. [2024-09-11 19:27:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:27:51,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:51,352 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:51,364 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-11 19:27:51,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:51,553 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:51,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2057068142, now seen corresponding path program 28 times [2024-09-11 19:27:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307014431] [2024-09-11 19:27:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:27:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307014431] [2024-09-11 19:27:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307014431] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439008001] [2024-09-11 19:27:51,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:27:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:51,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:51,889 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:51,890 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-11 19:27:51,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:27:51,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:51,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-11 19:27:51,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:27:52,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 19:27:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439008001] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:52,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-09-11 19:27:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769490213] [2024-09-11 19:27:52,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:52,192 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:27:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:27:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:52,192 INFO L87 Difference]: Start difference. First operand 192 states and 222 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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) [2024-09-11 19:27:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:52,445 INFO L93 Difference]: Finished difference Result 229 states and 263 transitions. [2024-09-11 19:27:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:27:52,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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) Word has length 35 [2024-09-11 19:27:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:52,447 INFO L225 Difference]: With dead ends: 229 [2024-09-11 19:27:52,447 INFO L226 Difference]: Without dead ends: 215 [2024-09-11 19:27:52,447 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 24 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:27:52,447 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:52,447 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 127 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:27:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-09-11 19:27:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 200. [2024-09-11 19:27:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.1608040201005025) internal successors, (231), 199 states have internal predecessors, (231), 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) [2024-09-11 19:27:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2024-09-11 19:27:52,571 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 35 [2024-09-11 19:27:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:52,571 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2024-09-11 19:27:52,572 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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) [2024-09-11 19:27:52,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2024-09-11 19:27:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-11 19:27:52,572 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:52,572 INFO L216 NwaCegarLoop]: trace histogram [16, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:52,587 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-11 19:27:52,773 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-11 19:27:52,773 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:52,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1432047742, now seen corresponding path program 29 times [2024-09-11 19:27:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553813914] [2024-09-11 19:27:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-11 19:27:53,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:53,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553813914] [2024-09-11 19:27:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553813914] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:53,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399745080] [2024-09-11 19:27:53,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:27:53,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:53,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:53,231 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:53,232 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-11 19:27:53,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-09-11 19:27:53,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:53,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-11 19:27:53,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:27:53,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-11 19:27:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399745080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:53,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:53,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 16] total 48 [2024-09-11 19:27:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86581611] [2024-09-11 19:27:53,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:53,973 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:27:53,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:27:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=1806, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:27:53,974 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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) [2024-09-11 19:27:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:27:56,154 INFO L93 Difference]: Finished difference Result 406 states and 483 transitions. [2024-09-11 19:27:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-09-11 19:27:56,155 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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) Word has length 37 [2024-09-11 19:27:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:27:56,157 INFO L225 Difference]: With dead ends: 406 [2024-09-11 19:27:56,157 INFO L226 Difference]: Without dead ends: 386 [2024-09-11 19:27:56,158 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2323, Invalid=7183, Unknown=0, NotChecked=0, Total=9506 [2024-09-11 19:27:56,158 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 444 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:27:56,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 350 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 19:27:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-09-11 19:27:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 192. [2024-09-11 19:27:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.1518324607329844) internal successors, (220), 191 states have internal predecessors, (220), 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) [2024-09-11 19:27:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 220 transitions. [2024-09-11 19:27:56,314 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 220 transitions. Word has length 37 [2024-09-11 19:27:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:27:56,315 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 220 transitions. [2024-09-11 19:27:56,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 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) [2024-09-11 19:27:56,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 220 transitions. [2024-09-11 19:27:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:27:56,316 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:27:56,316 INFO L216 NwaCegarLoop]: trace histogram [12, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:27:56,327 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-11 19:27:56,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-11 19:27:56,516 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:27:56,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:27:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1558214192, now seen corresponding path program 30 times [2024-09-11 19:27:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:27:56,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520128641] [2024-09-11 19:27:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:27:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:27:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:27:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-11 19:27:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:27:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520128641] [2024-09-11 19:27:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520128641] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:27:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074325126] [2024-09-11 19:27:56,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:27:56,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:27:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:27:56,857 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:27:56,858 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-11 19:27:56,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 19:27:56,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:27:56,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-11 19:27:56,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:27:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-11 19:27:57,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:27:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-11 19:27:57,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074325126] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:27:57,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:27:57,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 52 [2024-09-11 19:27:57,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024690161] [2024-09-11 19:27:57,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:27:57,768 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-11 19:27:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:27:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-11 19:27:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:27:57,769 INFO L87 Difference]: Start difference. First operand 192 states and 220 transitions. Second operand has 52 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 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) [2024-09-11 19:28:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:00,856 INFO L93 Difference]: Finished difference Result 356 states and 400 transitions. [2024-09-11 19:28:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-11 19:28:00,857 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 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) Word has length 38 [2024-09-11 19:28:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:00,858 INFO L225 Difference]: With dead ends: 356 [2024-09-11 19:28:00,858 INFO L226 Difference]: Without dead ends: 328 [2024-09-11 19:28:00,858 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1861, Invalid=7451, Unknown=0, NotChecked=0, Total=9312 [2024-09-11 19:28:00,859 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 249 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:00,859 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 191 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:28:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-11 19:28:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 186. [2024-09-11 19:28:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 185 states have internal predecessors, (213), 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) [2024-09-11 19:28:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 213 transitions. [2024-09-11 19:28:00,988 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 213 transitions. Word has length 38 [2024-09-11 19:28:00,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:00,989 INFO L474 AbstractCegarLoop]: Abstraction has 186 states and 213 transitions. [2024-09-11 19:28:00,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 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) [2024-09-11 19:28:00,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 213 transitions. [2024-09-11 19:28:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:28:00,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:00,989 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:01,002 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-11 19:28:01,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-11 19:28:01,190 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:01,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash -524046206, now seen corresponding path program 31 times [2024-09-11 19:28:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:01,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65254755] [2024-09-11 19:28:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:01,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:01,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65254755] [2024-09-11 19:28:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65254755] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:01,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390566089] [2024-09-11 19:28:01,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:28:01,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:01,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:01,506 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:01,507 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-11 19:28:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:01,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-11 19:28:01,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:01,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:01,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390566089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:01,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:01,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-09-11 19:28:01,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384946044] [2024-09-11 19:28:01,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:01,865 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:28:01,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:01,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:28:01,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:28:01,866 INFO L87 Difference]: Start difference. First operand 186 states and 213 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) [2024-09-11 19:28:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:02,265 INFO L93 Difference]: Finished difference Result 301 states and 338 transitions. [2024-09-11 19:28:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:28:02,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) Word has length 38 [2024-09-11 19:28:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:02,266 INFO L225 Difference]: With dead ends: 301 [2024-09-11 19:28:02,266 INFO L226 Difference]: Without dead ends: 286 [2024-09-11 19:28:02,267 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 59 SyntacticMatches, 26 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:28:02,267 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:02,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 151 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:28:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-09-11 19:28:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 204. [2024-09-11 19:28:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.1724137931034482) internal successors, (238), 203 states have internal predecessors, (238), 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) [2024-09-11 19:28:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2024-09-11 19:28:02,412 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2024-09-11 19:28:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:02,412 INFO L474 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2024-09-11 19:28:02,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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) [2024-09-11 19:28:02,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2024-09-11 19:28:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 19:28:02,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:02,413 INFO L216 NwaCegarLoop]: trace histogram [12, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:02,427 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-11 19:28:02,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-11 19:28:02,614 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:02,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 565286018, now seen corresponding path program 32 times [2024-09-11 19:28:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375626626] [2024-09-11 19:28:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 22 proven. 110 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-11 19:28:02,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:02,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375626626] [2024-09-11 19:28:02,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375626626] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:02,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383400717] [2024-09-11 19:28:02,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:28:02,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:02,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:02,951 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:02,952 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-11 19:28:03,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:28:03,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:03,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-11 19:28:03,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:03,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383400717] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:03,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 49 [2024-09-11 19:28:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542790772] [2024-09-11 19:28:03,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:03,749 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-11 19:28:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-11 19:28:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2083, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:28:03,749 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 49 states have internal predecessors, (60), 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) [2024-09-11 19:28:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:33,290 INFO L93 Difference]: Finished difference Result 453 states and 536 transitions. [2024-09-11 19:28:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2024-09-11 19:28:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 49 states have internal predecessors, (60), 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) Word has length 40 [2024-09-11 19:28:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:33,292 INFO L225 Difference]: With dead ends: 453 [2024-09-11 19:28:33,292 INFO L226 Difference]: Without dead ends: 388 [2024-09-11 19:28:33,294 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25488 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=9285, Invalid=60147, Unknown=0, NotChecked=0, Total=69432 [2024-09-11 19:28:33,295 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 1217 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:33,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 234 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-11 19:28:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-09-11 19:28:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 240. [2024-09-11 19:28:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.205020920502092) internal successors, (288), 239 states have internal predecessors, (288), 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) [2024-09-11 19:28:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 288 transitions. [2024-09-11 19:28:33,496 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 288 transitions. Word has length 40 [2024-09-11 19:28:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:33,497 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 288 transitions. [2024-09-11 19:28:33,497 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 49 states have internal predecessors, (60), 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) [2024-09-11 19:28:33,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:33,497 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 288 transitions. [2024-09-11 19:28:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:28:33,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:33,498 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:33,516 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-11 19:28:33,698 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-11 19:28:33,699 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:33,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1497686254, now seen corresponding path program 33 times [2024-09-11 19:28:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:33,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815536454] [2024-09-11 19:28:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:33,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:28:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815536454] [2024-09-11 19:28:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815536454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564476355] [2024-09-11 19:28:34,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:28:34,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:34,098 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:34,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-11 19:28:34,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-11 19:28:34,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:34,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-11 19:28:34,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:28:34,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-11 19:28:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564476355] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:34,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-09-11 19:28:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875486994] [2024-09-11 19:28:34,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:34,475 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:28:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:34,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:28:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:28:34,476 INFO L87 Difference]: Start difference. First operand 240 states and 288 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2024-09-11 19:28:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:34,981 INFO L93 Difference]: Finished difference Result 322 states and 374 transitions. [2024-09-11 19:28:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:28:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) Word has length 41 [2024-09-11 19:28:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:34,983 INFO L225 Difference]: With dead ends: 322 [2024-09-11 19:28:34,983 INFO L226 Difference]: Without dead ends: 306 [2024-09-11 19:28:34,983 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 27 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:28:34,984 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:34,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 189 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:28:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-09-11 19:28:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 250. [2024-09-11 19:28:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.2008032128514057) internal successors, (299), 249 states have internal predecessors, (299), 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) [2024-09-11 19:28:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 299 transitions. [2024-09-11 19:28:35,196 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 299 transitions. Word has length 41 [2024-09-11 19:28:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:35,197 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 299 transitions. [2024-09-11 19:28:35,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2024-09-11 19:28:35,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 299 transitions. [2024-09-11 19:28:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-11 19:28:35,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:35,197 INFO L216 NwaCegarLoop]: trace histogram [17, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:35,210 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-11 19:28:35,398 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-11 19:28:35,398 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:35,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash -775202333, now seen corresponding path program 34 times [2024-09-11 19:28:35,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:35,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161905027] [2024-09-11 19:28:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:35,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:35,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161905027] [2024-09-11 19:28:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161905027] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435832988] [2024-09-11 19:28:35,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:28:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:35,850 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:35,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-11 19:28:35,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:28:35,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:35,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-11 19:28:35,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:28:36,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-09-11 19:28:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435832988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:36,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:36,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 16] total 48 [2024-09-11 19:28:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387602869] [2024-09-11 19:28:36,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:36,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:28:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:28:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:28:36,533 INFO L87 Difference]: Start difference. First operand 250 states and 299 transitions. Second operand has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 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) [2024-09-11 19:28:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:40,739 INFO L93 Difference]: Finished difference Result 305 states and 365 transitions. [2024-09-11 19:28:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-09-11 19:28:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 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) Word has length 41 [2024-09-11 19:28:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:40,741 INFO L225 Difference]: With dead ends: 305 [2024-09-11 19:28:40,741 INFO L226 Difference]: Without dead ends: 274 [2024-09-11 19:28:40,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1185, Invalid=12621, Unknown=0, NotChecked=0, Total=13806 [2024-09-11 19:28:40,742 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:40,742 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 446 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-11 19:28:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-09-11 19:28:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2024-09-11 19:28:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.171875) internal successors, (300), 256 states have internal predecessors, (300), 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) [2024-09-11 19:28:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 300 transitions. [2024-09-11 19:28:41,009 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 300 transitions. Word has length 41 [2024-09-11 19:28:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:41,009 INFO L474 AbstractCegarLoop]: Abstraction has 257 states and 300 transitions. [2024-09-11 19:28:41,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 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) [2024-09-11 19:28:41,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 300 transitions. [2024-09-11 19:28:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:28:41,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:41,010 INFO L216 NwaCegarLoop]: trace histogram [19, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:41,022 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-11 19:28:41,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-11 19:28:41,211 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:41,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash -112811935, now seen corresponding path program 35 times [2024-09-11 19:28:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615975464] [2024-09-11 19:28:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:28:41,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:41,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615975464] [2024-09-11 19:28:41,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615975464] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:41,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474053203] [2024-09-11 19:28:41,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:28:41,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:41,659 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:41,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-11 19:28:42,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-11 19:28:42,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:42,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 19:28:42,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:28:42,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-11 19:28:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474053203] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:42,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:42,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 18] total 54 [2024-09-11 19:28:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947739932] [2024-09-11 19:28:42,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:42,794 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:28:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:28:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2575, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:28:42,795 INFO L87 Difference]: Start difference. First operand 257 states and 300 transitions. Second operand has 54 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 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) [2024-09-11 19:28:49,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:49,634 INFO L93 Difference]: Finished difference Result 327 states and 388 transitions. [2024-09-11 19:28:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-09-11 19:28:49,634 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 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) Word has length 42 [2024-09-11 19:28:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:49,635 INFO L225 Difference]: With dead ends: 327 [2024-09-11 19:28:49,636 INFO L226 Difference]: Without dead ends: 295 [2024-09-11 19:28:49,636 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6077 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1745, Invalid=21817, Unknown=0, NotChecked=0, Total=23562 [2024-09-11 19:28:49,637 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 135 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:49,637 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 594 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-11 19:28:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-09-11 19:28:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 267. [2024-09-11 19:28:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.1390977443609023) internal successors, (303), 266 states have internal predecessors, (303), 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) [2024-09-11 19:28:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 303 transitions. [2024-09-11 19:28:49,883 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 303 transitions. Word has length 42 [2024-09-11 19:28:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:49,883 INFO L474 AbstractCegarLoop]: Abstraction has 267 states and 303 transitions. [2024-09-11 19:28:49,884 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 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) [2024-09-11 19:28:49,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 303 transitions. [2024-09-11 19:28:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:28:49,884 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:49,884 INFO L216 NwaCegarLoop]: trace histogram [13, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:49,896 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-11 19:28:50,085 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-11 19:28:50,085 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:50,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2062825774, now seen corresponding path program 36 times [2024-09-11 19:28:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406359475] [2024-09-11 19:28:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:50,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 24 proven. 132 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-09-11 19:28:50,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:50,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406359475] [2024-09-11 19:28:50,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406359475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:50,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508941210] [2024-09-11 19:28:50,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:28:50,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:50,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:50,482 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:50,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-11 19:28:50,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-11 19:28:50,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:28:50,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 19:28:50,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 24 proven. 132 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-09-11 19:28:50,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 24 proven. 132 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-09-11 19:28:51,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508941210] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:51,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:51,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 26] total 62 [2024-09-11 19:28:51,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463719929] [2024-09-11 19:28:51,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:51,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-11 19:28:51,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-11 19:28:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3205, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:28:51,696 INFO L87 Difference]: Start difference. First operand 267 states and 303 transitions. Second operand has 62 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 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) [2024-09-11 19:28:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:57,617 INFO L93 Difference]: Finished difference Result 526 states and 589 transitions. [2024-09-11 19:28:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-09-11 19:28:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 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) Word has length 43 [2024-09-11 19:28:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:57,619 INFO L225 Difference]: With dead ends: 526 [2024-09-11 19:28:57,619 INFO L226 Difference]: Without dead ends: 495 [2024-09-11 19:28:57,619 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3228, Invalid=13028, Unknown=0, NotChecked=0, Total=16256 [2024-09-11 19:28:57,620 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 360 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:57,620 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 212 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 19:28:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-09-11 19:28:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 269. [2024-09-11 19:28:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.1417910447761195) internal successors, (306), 268 states have internal predecessors, (306), 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) [2024-09-11 19:28:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 306 transitions. [2024-09-11 19:28:57,880 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 306 transitions. Word has length 43 [2024-09-11 19:28:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:57,880 INFO L474 AbstractCegarLoop]: Abstraction has 269 states and 306 transitions. [2024-09-11 19:28:57,880 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 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) [2024-09-11 19:28:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 306 transitions. [2024-09-11 19:28:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 19:28:57,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:57,881 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:57,894 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-11 19:28:58,081 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:58,082 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:58,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1453309310, now seen corresponding path program 37 times [2024-09-11 19:28:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645990894] [2024-09-11 19:28:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:28:58,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:28:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645990894] [2024-09-11 19:28:58,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645990894] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:28:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188749664] [2024-09-11 19:28:58,437 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:28:58,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:28:58,439 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:28:58,441 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-11 19:28:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:28:58,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-11 19:28:58,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:28:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:28:58,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:28:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:28:58,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188749664] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:28:58,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:28:58,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2024-09-11 19:28:58,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384781259] [2024-09-11 19:28:58,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:28:58,813 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:28:58,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:28:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:28:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:28:58,814 INFO L87 Difference]: Start difference. First operand 269 states and 306 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2024-09-11 19:28:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:28:59,443 INFO L93 Difference]: Finished difference Result 402 states and 455 transitions. [2024-09-11 19:28:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-11 19:28:59,444 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) Word has length 44 [2024-09-11 19:28:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:28:59,445 INFO L225 Difference]: With dead ends: 402 [2024-09-11 19:28:59,445 INFO L226 Difference]: Without dead ends: 385 [2024-09-11 19:28:59,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 30 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:28:59,446 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:28:59,446 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 203 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:28:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-09-11 19:28:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 296. [2024-09-11 19:28:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.159322033898305) internal successors, (342), 295 states have internal predecessors, (342), 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) [2024-09-11 19:28:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 342 transitions. [2024-09-11 19:28:59,736 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 342 transitions. Word has length 44 [2024-09-11 19:28:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:28:59,736 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 342 transitions. [2024-09-11 19:28:59,736 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2024-09-11 19:28:59,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 342 transitions. [2024-09-11 19:28:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-11 19:28:59,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:28:59,737 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:28:59,750 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-11 19:28:59,937 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:28:59,938 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:28:59,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:28:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash -213584542, now seen corresponding path program 38 times [2024-09-11 19:28:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:28:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248414370] [2024-09-11 19:28:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:28:59,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:28:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:29:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248414370] [2024-09-11 19:29:00,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248414370] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212553929] [2024-09-11 19:29:00,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:29:00,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:00,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:00,334 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:00,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-11 19:29:00,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:29:00,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:00,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-11 19:29:00,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:29:00,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:29:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212553929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:01,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-09-11 19:29:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344343248] [2024-09-11 19:29:01,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:01,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:29:01,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:01,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:29:01,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2731, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:29:01,209 INFO L87 Difference]: Start difference. First operand 296 states and 342 transitions. Second operand has 54 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 53 states have internal predecessors, (62), 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) [2024-09-11 19:29:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:02,099 INFO L93 Difference]: Finished difference Result 313 states and 358 transitions. [2024-09-11 19:29:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 19:29:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 53 states have internal predecessors, (62), 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) Word has length 45 [2024-09-11 19:29:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:02,101 INFO L225 Difference]: With dead ends: 313 [2024-09-11 19:29:02,101 INFO L226 Difference]: Without dead ends: 281 [2024-09-11 19:29:02,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=209, Invalid=4213, Unknown=0, NotChecked=0, Total=4422 [2024-09-11 19:29:02,102 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:02,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 232 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:29:02,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-09-11 19:29:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-09-11 19:29:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.1607142857142858) internal successors, (325), 280 states have internal predecessors, (325), 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) [2024-09-11 19:29:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 325 transitions. [2024-09-11 19:29:02,494 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 325 transitions. Word has length 45 [2024-09-11 19:29:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:02,494 INFO L474 AbstractCegarLoop]: Abstraction has 281 states and 325 transitions. [2024-09-11 19:29:02,494 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 53 states have internal predecessors, (62), 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) [2024-09-11 19:29:02,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 325 transitions. [2024-09-11 19:29:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 19:29:02,495 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:02,495 INFO L216 NwaCegarLoop]: trace histogram [21, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:02,511 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:02,696 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-11 19:29:02,696 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:02,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2141462721, now seen corresponding path program 39 times [2024-09-11 19:29:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:02,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281405936] [2024-09-11 19:29:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-11 19:29:03,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281405936] [2024-09-11 19:29:03,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281405936] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:03,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689820868] [2024-09-11 19:29:03,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:29:03,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:03,295 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:03,296 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-11 19:29:03,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:29:03,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:03,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:29:03,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-11 19:29:03,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-11 19:29:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689820868] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:04,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:04,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 20] total 61 [2024-09-11 19:29:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697097452] [2024-09-11 19:29:04,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:04,758 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-11 19:29:04,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-11 19:29:04,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=3136, Unknown=0, NotChecked=0, Total=3660 [2024-09-11 19:29:04,759 INFO L87 Difference]: Start difference. First operand 281 states and 325 transitions. Second operand has 61 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 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) [2024-09-11 19:29:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:13,704 INFO L93 Difference]: Finished difference Result 405 states and 472 transitions. [2024-09-11 19:29:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2024-09-11 19:29:13,705 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 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) Word has length 46 [2024-09-11 19:29:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:13,706 INFO L225 Difference]: With dead ends: 405 [2024-09-11 19:29:13,706 INFO L226 Difference]: Without dead ends: 368 [2024-09-11 19:29:13,709 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12390 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5982, Invalid=38328, Unknown=0, NotChecked=0, Total=44310 [2024-09-11 19:29:13,709 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 1115 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 5479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:13,709 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 656 Invalid, 5479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 5283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-11 19:29:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-11 19:29:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 276. [2024-09-11 19:29:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.1672727272727272) internal successors, (321), 275 states have internal predecessors, (321), 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) [2024-09-11 19:29:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 321 transitions. [2024-09-11 19:29:13,975 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 321 transitions. Word has length 46 [2024-09-11 19:29:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:13,975 INFO L474 AbstractCegarLoop]: Abstraction has 276 states and 321 transitions. [2024-09-11 19:29:13,976 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 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) [2024-09-11 19:29:13,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 321 transitions. [2024-09-11 19:29:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:29:13,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:13,977 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:13,992 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-11 19:29:14,177 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:14,177 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:14,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1770685294, now seen corresponding path program 40 times [2024-09-11 19:29:14,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:14,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995440284] [2024-09-11 19:29:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:14,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 19:29:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:14,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995440284] [2024-09-11 19:29:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995440284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:14,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895604275] [2024-09-11 19:29:14,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:29:14,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:14,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:14,635 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:14,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-11 19:29:14,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:29:14,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:14,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-11 19:29:14,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 19:29:14,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 19:29:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895604275] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:15,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:15,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-09-11 19:29:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548207530] [2024-09-11 19:29:15,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:15,127 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:29:15,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:29:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:29:15,127 INFO L87 Difference]: Start difference. First operand 276 states and 321 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2024-09-11 19:29:16,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:16,088 INFO L93 Difference]: Finished difference Result 486 states and 542 transitions. [2024-09-11 19:29:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:29:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) Word has length 47 [2024-09-11 19:29:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:16,090 INFO L225 Difference]: With dead ends: 486 [2024-09-11 19:29:16,090 INFO L226 Difference]: Without dead ends: 468 [2024-09-11 19:29:16,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 74 SyntacticMatches, 32 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:29:16,090 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:16,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 216 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-09-11 19:29:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 292. [2024-09-11 19:29:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.168384879725086) internal successors, (340), 291 states have internal predecessors, (340), 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) [2024-09-11 19:29:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 340 transitions. [2024-09-11 19:29:16,450 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 340 transitions. Word has length 47 [2024-09-11 19:29:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:16,451 INFO L474 AbstractCegarLoop]: Abstraction has 292 states and 340 transitions. [2024-09-11 19:29:16,451 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2024-09-11 19:29:16,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 340 transitions. [2024-09-11 19:29:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-11 19:29:16,452 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:16,452 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:16,468 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-11 19:29:16,656 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:16,657 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:16,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash -666908912, now seen corresponding path program 41 times [2024-09-11 19:29:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976303926] [2024-09-11 19:29:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 19:29:17,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976303926] [2024-09-11 19:29:17,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976303926] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788841363] [2024-09-11 19:29:17,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:29:17,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:17,185 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:17,186 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-11 19:29:17,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-11 19:29:17,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:17,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-11 19:29:17,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 19:29:18,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 19:29:19,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788841363] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:19,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:19,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 30] total 72 [2024-09-11 19:29:19,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225109572] [2024-09-11 19:29:19,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:19,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-11 19:29:19,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:19,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-11 19:29:19,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=4355, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:29:19,140 INFO L87 Difference]: Start difference. First operand 292 states and 340 transitions. Second operand has 72 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 states have internal predecessors, (84), 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) [2024-09-11 19:29:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:29,842 INFO L93 Difference]: Finished difference Result 717 states and 809 transitions. [2024-09-11 19:29:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-09-11 19:29:29,843 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 states have internal predecessors, (84), 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) Word has length 48 [2024-09-11 19:29:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:29,845 INFO L225 Difference]: With dead ends: 717 [2024-09-11 19:29:29,845 INFO L226 Difference]: Without dead ends: 683 [2024-09-11 19:29:29,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7731 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=5216, Invalid=21190, Unknown=0, NotChecked=0, Total=26406 [2024-09-11 19:29:29,846 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 637 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:29,846 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 276 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 19:29:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-09-11 19:29:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 284. [2024-09-11 19:29:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.1554770318021201) internal successors, (327), 283 states have internal predecessors, (327), 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) [2024-09-11 19:29:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 327 transitions. [2024-09-11 19:29:30,192 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 327 transitions. Word has length 48 [2024-09-11 19:29:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:30,193 INFO L474 AbstractCegarLoop]: Abstraction has 284 states and 327 transitions. [2024-09-11 19:29:30,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 states have internal predecessors, (84), 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) [2024-09-11 19:29:30,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 327 transitions. [2024-09-11 19:29:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-11 19:29:30,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:30,194 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:30,211 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-11 19:29:30,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-11 19:29:30,395 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:30,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:30,395 INFO L85 PathProgramCache]: Analyzing trace with hash 573558562, now seen corresponding path program 42 times [2024-09-11 19:29:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:30,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88391970] [2024-09-11 19:29:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:30,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 19:29:30,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:30,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88391970] [2024-09-11 19:29:30,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88391970] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:30,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561638114] [2024-09-11 19:29:30,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:29:30,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:30,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:30,982 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:30,982 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-11 19:29:31,116 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-11 19:29:31,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:31,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-11 19:29:31,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 19:29:31,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 19:29:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561638114] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:32,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:32,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 73 [2024-09-11 19:29:32,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943812509] [2024-09-11 19:29:32,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:32,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-11 19:29:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-11 19:29:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=4663, Unknown=0, NotChecked=0, Total=5256 [2024-09-11 19:29:32,499 INFO L87 Difference]: Start difference. First operand 284 states and 327 transitions. Second operand has 73 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 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) [2024-09-11 19:29:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:36,293 INFO L93 Difference]: Finished difference Result 441 states and 515 transitions. [2024-09-11 19:29:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-11 19:29:36,293 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 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) Word has length 49 [2024-09-11 19:29:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:36,295 INFO L225 Difference]: With dead ends: 441 [2024-09-11 19:29:36,295 INFO L226 Difference]: Without dead ends: 327 [2024-09-11 19:29:36,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1358 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=922, Invalid=6560, Unknown=0, NotChecked=0, Total=7482 [2024-09-11 19:29:36,296 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:36,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 160 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-11 19:29:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-09-11 19:29:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 312. [2024-09-11 19:29:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.1639871382636655) internal successors, (362), 311 states have internal predecessors, (362), 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) [2024-09-11 19:29:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2024-09-11 19:29:36,670 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 49 [2024-09-11 19:29:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:36,670 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2024-09-11 19:29:36,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 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) [2024-09-11 19:29:36,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2024-09-11 19:29:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-11 19:29:36,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:36,671 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:36,688 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-11 19:29:36,875 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-11 19:29:36,876 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:36,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2122304382, now seen corresponding path program 43 times [2024-09-11 19:29:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:36,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978633336] [2024-09-11 19:29:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:36,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 19:29:37,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:37,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978633336] [2024-09-11 19:29:37,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978633336] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:37,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522205350] [2024-09-11 19:29:37,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:29:37,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:37,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:37,235 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:37,236 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-11 19:29:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:37,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-11 19:29:37,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 19:29:37,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 19:29:37,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522205350] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:37,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 19 [2024-09-11 19:29:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088636868] [2024-09-11 19:29:37,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:37,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:29:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:29:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:29:37,677 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2024-09-11 19:29:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:39,049 INFO L93 Difference]: Finished difference Result 588 states and 652 transitions. [2024-09-11 19:29:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 19:29:39,049 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) Word has length 50 [2024-09-11 19:29:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:39,051 INFO L225 Difference]: With dead ends: 588 [2024-09-11 19:29:39,051 INFO L226 Difference]: Without dead ends: 569 [2024-09-11 19:29:39,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 79 SyntacticMatches, 34 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:29:39,052 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:39,052 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 228 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:29:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-09-11 19:29:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 340. [2024-09-11 19:29:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.1651917404129795) internal successors, (395), 339 states have internal predecessors, (395), 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) [2024-09-11 19:29:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 395 transitions. [2024-09-11 19:29:39,483 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 395 transitions. Word has length 50 [2024-09-11 19:29:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:39,483 INFO L474 AbstractCegarLoop]: Abstraction has 340 states and 395 transitions. [2024-09-11 19:29:39,483 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2024-09-11 19:29:39,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 395 transitions. [2024-09-11 19:29:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-11 19:29:39,483 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:39,484 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:39,496 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-09-11 19:29:39,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:39,684 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:39,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1268902288, now seen corresponding path program 44 times [2024-09-11 19:29:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:39,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480276289] [2024-09-11 19:29:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:39,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:29:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480276289] [2024-09-11 19:29:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480276289] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489659184] [2024-09-11 19:29:40,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:29:40,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:40,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:40,291 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:40,292 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-11 19:29:40,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:29:40,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:40,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-11 19:29:40,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:29:40,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:29:41,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489659184] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:41,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 78 [2024-09-11 19:29:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598917334] [2024-09-11 19:29:41,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:41,965 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-11 19:29:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-11 19:29:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=665, Invalid=5341, Unknown=0, NotChecked=0, Total=6006 [2024-09-11 19:29:41,966 INFO L87 Difference]: Start difference. First operand 340 states and 395 transitions. Second operand has 78 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 78 states have internal predecessors, (88), 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) [2024-09-11 19:29:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:29:46,880 INFO L93 Difference]: Finished difference Result 471 states and 546 transitions. [2024-09-11 19:29:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-09-11 19:29:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 78 states have internal predecessors, (88), 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) Word has length 52 [2024-09-11 19:29:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:29:46,882 INFO L225 Difference]: With dead ends: 471 [2024-09-11 19:29:46,882 INFO L226 Difference]: Without dead ends: 351 [2024-09-11 19:29:46,883 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1346, Invalid=9996, Unknown=0, NotChecked=0, Total=11342 [2024-09-11 19:29:46,883 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:29:46,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 197 Invalid, 3132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-11 19:29:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-09-11 19:29:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 335. [2024-09-11 19:29:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.152694610778443) internal successors, (385), 334 states have internal predecessors, (385), 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) [2024-09-11 19:29:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 385 transitions. [2024-09-11 19:29:47,284 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 385 transitions. Word has length 52 [2024-09-11 19:29:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:29:47,284 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 385 transitions. [2024-09-11 19:29:47,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 78 states have internal predecessors, (88), 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) [2024-09-11 19:29:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 385 transitions. [2024-09-11 19:29:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-11 19:29:47,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:29:47,285 INFO L216 NwaCegarLoop]: trace histogram [25, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:29:47,299 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-11 19:29:47,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:47,486 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:29:47,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:29:47,486 INFO L85 PathProgramCache]: Analyzing trace with hash -421487839, now seen corresponding path program 45 times [2024-09-11 19:29:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:29:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189973434] [2024-09-11 19:29:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:29:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:29:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:29:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:29:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:29:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189973434] [2024-09-11 19:29:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189973434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:29:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524721861] [2024-09-11 19:29:48,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:29:48,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:29:48,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:29:48,111 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:29:48,112 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-11 19:29:48,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:29:48,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:29:48,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-11 19:29:48,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:29:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-11 19:29:48,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:29:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-11 19:29:49,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524721861] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:29:49,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:29:49,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 68 [2024-09-11 19:29:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366585321] [2024-09-11 19:29:49,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:29:49,837 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-11 19:29:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:29:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-11 19:29:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4274, Unknown=0, NotChecked=0, Total=4556 [2024-09-11 19:29:49,838 INFO L87 Difference]: Start difference. First operand 335 states and 385 transitions. Second operand has 68 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 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) [2024-09-11 19:30:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:10,404 INFO L93 Difference]: Finished difference Result 587 states and 716 transitions. [2024-09-11 19:30:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2024-09-11 19:30:10,405 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 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) Word has length 52 [2024-09-11 19:30:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:10,406 INFO L225 Difference]: With dead ends: 587 [2024-09-11 19:30:10,406 INFO L226 Difference]: Without dead ends: 502 [2024-09-11 19:30:10,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28731 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=4610, Invalid=89332, Unknown=0, NotChecked=0, Total=93942 [2024-09-11 19:30:10,409 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 290 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 9934 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 10156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 9934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:10,409 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 994 Invalid, 10156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 9934 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-09-11 19:30:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-09-11 19:30:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 424. [2024-09-11 19:30:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.099290780141844) internal successors, (465), 423 states have internal predecessors, (465), 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) [2024-09-11 19:30:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 465 transitions. [2024-09-11 19:30:10,987 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 465 transitions. Word has length 52 [2024-09-11 19:30:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:10,987 INFO L474 AbstractCegarLoop]: Abstraction has 424 states and 465 transitions. [2024-09-11 19:30:10,987 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 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) [2024-09-11 19:30:10,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 465 transitions. [2024-09-11 19:30:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-11 19:30:10,988 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:10,988 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:11,001 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-11 19:30:11,189 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-11 19:30:11,189 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:11,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2125380114, now seen corresponding path program 46 times [2024-09-11 19:30:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53800229] [2024-09-11 19:30:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:30:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53800229] [2024-09-11 19:30:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53800229] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842874171] [2024-09-11 19:30:11,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:30:11,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:11,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:11,667 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:11,669 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-11 19:30:11,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:30:11,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:11,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-11 19:30:11,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:30:11,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-11 19:30:12,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842874171] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:12,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:12,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-09-11 19:30:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434122283] [2024-09-11 19:30:12,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:12,230 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:30:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:30:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:30:12,231 INFO L87 Difference]: Start difference. First operand 424 states and 465 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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) [2024-09-11 19:30:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:13,243 INFO L93 Difference]: Finished difference Result 516 states and 566 transitions. [2024-09-11 19:30:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:30:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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) Word has length 53 [2024-09-11 19:30:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:13,245 INFO L225 Difference]: With dead ends: 516 [2024-09-11 19:30:13,245 INFO L226 Difference]: Without dead ends: 496 [2024-09-11 19:30:13,245 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 84 SyntacticMatches, 36 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:30:13,246 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:13,246 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 210 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:30:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-09-11 19:30:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 448. [2024-09-11 19:30:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.1006711409395973) internal successors, (492), 447 states have internal predecessors, (492), 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) [2024-09-11 19:30:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 492 transitions. [2024-09-11 19:30:13,873 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 492 transitions. Word has length 53 [2024-09-11 19:30:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:13,873 INFO L474 AbstractCegarLoop]: Abstraction has 448 states and 492 transitions. [2024-09-11 19:30:13,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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) [2024-09-11 19:30:13,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 492 transitions. [2024-09-11 19:30:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-11 19:30:13,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:13,875 INFO L216 NwaCegarLoop]: trace histogram [26, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:13,886 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-09-11 19:30:14,075 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:14,075 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:14,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1350885026, now seen corresponding path program 47 times [2024-09-11 19:30:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:14,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577470491] [2024-09-11 19:30:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-11 19:30:14,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:14,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577470491] [2024-09-11 19:30:14,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577470491] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840384718] [2024-09-11 19:30:14,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:30:14,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:14,791 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:14,792 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-11 19:30:15,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-11 19:30:15,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:15,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-11 19:30:15,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:30:16,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-09-11 19:30:16,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840384718] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:16,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:16,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 24] total 74 [2024-09-11 19:30:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706230508] [2024-09-11 19:30:16,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:16,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 19:30:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 19:30:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=4388, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:30:16,911 INFO L87 Difference]: Start difference. First operand 448 states and 492 transitions. Second operand has 74 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 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) [2024-09-11 19:30:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:25,451 INFO L93 Difference]: Finished difference Result 935 states and 1058 transitions. [2024-09-11 19:30:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-09-11 19:30:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 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) Word has length 55 [2024-09-11 19:30:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:25,454 INFO L225 Difference]: With dead ends: 935 [2024-09-11 19:30:25,454 INFO L226 Difference]: Without dead ends: 905 [2024-09-11 19:30:25,456 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13491 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=9532, Invalid=28688, Unknown=0, NotChecked=0, Total=38220 [2024-09-11 19:30:25,456 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 785 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 5516 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 5516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:25,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1042 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 5516 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-11 19:30:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-09-11 19:30:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 417. [2024-09-11 19:30:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.09375) internal successors, (455), 416 states have internal predecessors, (455), 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) [2024-09-11 19:30:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 455 transitions. [2024-09-11 19:30:26,003 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 455 transitions. Word has length 55 [2024-09-11 19:30:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:26,004 INFO L474 AbstractCegarLoop]: Abstraction has 417 states and 455 transitions. [2024-09-11 19:30:26,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 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) [2024-09-11 19:30:26,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 455 transitions. [2024-09-11 19:30:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-11 19:30:26,005 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:26,005 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:26,019 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-09-11 19:30:26,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:26,205 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:26,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1189578370, now seen corresponding path program 48 times [2024-09-11 19:30:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117967927] [2024-09-11 19:30:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-11 19:30:26,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117967927] [2024-09-11 19:30:26,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117967927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051401673] [2024-09-11 19:30:26,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:30:26,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:26,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:26,821 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:26,823 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-11 19:30:27,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-09-11 19:30:27,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:27,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-11 19:30:27,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-11 19:30:27,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-11 19:30:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051401673] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:27,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 21 [2024-09-11 19:30:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122257523] [2024-09-11 19:30:27,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:27,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:30:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:30:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:30:27,486 INFO L87 Difference]: Start difference. First operand 417 states and 455 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 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) [2024-09-11 19:30:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:28,770 INFO L93 Difference]: Finished difference Result 534 states and 579 transitions. [2024-09-11 19:30:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 19:30:28,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 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) Word has length 56 [2024-09-11 19:30:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:28,772 INFO L225 Difference]: With dead ends: 534 [2024-09-11 19:30:28,772 INFO L226 Difference]: Without dead ends: 513 [2024-09-11 19:30:28,773 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 90 SyntacticMatches, 37 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:30:28,773 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:28,773 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 241 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:30:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-09-11 19:30:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 433. [2024-09-11 19:30:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.0949074074074074) internal successors, (473), 432 states have internal predecessors, (473), 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) [2024-09-11 19:30:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 473 transitions. [2024-09-11 19:30:29,343 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 473 transitions. Word has length 56 [2024-09-11 19:30:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:29,343 INFO L474 AbstractCegarLoop]: Abstraction has 433 states and 473 transitions. [2024-09-11 19:30:29,343 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 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) [2024-09-11 19:30:29,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 473 transitions. [2024-09-11 19:30:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-11 19:30:29,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:29,344 INFO L216 NwaCegarLoop]: trace histogram [27, 12, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:29,361 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-11 19:30:29,545 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-09-11 19:30:29,545 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:29,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash -669669789, now seen corresponding path program 49 times [2024-09-11 19:30:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:29,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293144037] [2024-09-11 19:30:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:30:30,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:30,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293144037] [2024-09-11 19:30:30,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293144037] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:30,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105867621] [2024-09-11 19:30:30,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:30:30,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:30,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:30,246 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:30,247 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-11 19:30:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:30,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-11 19:30:30,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 433 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:30:30,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 22 proven. 110 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-09-11 19:30:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105867621] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:31,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 24] total 74 [2024-09-11 19:30:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426045287] [2024-09-11 19:30:31,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:31,633 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 19:30:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 19:30:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=4940, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:30:31,634 INFO L87 Difference]: Start difference. First operand 433 states and 473 transitions. Second operand has 74 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 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) [2024-09-11 19:30:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:56,361 INFO L93 Difference]: Finished difference Result 590 states and 667 transitions. [2024-09-11 19:30:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2024-09-11 19:30:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 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) Word has length 57 [2024-09-11 19:30:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:56,363 INFO L225 Difference]: With dead ends: 590 [2024-09-11 19:30:56,363 INFO L226 Difference]: Without dead ends: 492 [2024-09-11 19:30:56,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24650 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=4259, Invalid=75547, Unknown=0, NotChecked=0, Total=79806 [2024-09-11 19:30:56,366 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 264 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 7347 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 7493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 7347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:56,366 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1309 Invalid, 7493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 7347 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-09-11 19:30:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-09-11 19:30:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 465. [2024-09-11 19:30:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.0883620689655173) internal successors, (505), 464 states have internal predecessors, (505), 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) [2024-09-11 19:30:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 505 transitions. [2024-09-11 19:30:57,020 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 505 transitions. Word has length 57 [2024-09-11 19:30:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:30:57,020 INFO L474 AbstractCegarLoop]: Abstraction has 465 states and 505 transitions. [2024-09-11 19:30:57,020 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 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) [2024-09-11 19:30:57,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 505 transitions. [2024-09-11 19:30:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-11 19:30:57,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:30:57,021 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:30:57,033 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-09-11 19:30:57,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:57,222 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:30:57,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:30:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1099093906, now seen corresponding path program 50 times [2024-09-11 19:30:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:30:57,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350318827] [2024-09-11 19:30:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:30:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:30:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:30:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-11 19:30:57,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:30:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350318827] [2024-09-11 19:30:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350318827] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:30:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891920337] [2024-09-11 19:30:57,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:30:57,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:30:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:30:57,721 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:30:57,722 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-11 19:30:57,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:30:57,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:30:57,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 19:30:57,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:30:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-11 19:30:57,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:30:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-11 19:30:58,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891920337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:30:58,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:30:58,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-09-11 19:30:58,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326166517] [2024-09-11 19:30:58,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:30:58,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:30:58,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:30:58,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:30:58,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:30:58,307 INFO L87 Difference]: Start difference. First operand 465 states and 505 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 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) [2024-09-11 19:30:59,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:30:59,403 INFO L93 Difference]: Finished difference Result 526 states and 572 transitions. [2024-09-11 19:30:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:30:59,404 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 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) Word has length 59 [2024-09-11 19:30:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:30:59,405 INFO L225 Difference]: With dead ends: 526 [2024-09-11 19:30:59,406 INFO L226 Difference]: Without dead ends: 504 [2024-09-11 19:30:59,406 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 94 SyntacticMatches, 40 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:30:59,406 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:30:59,406 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 288 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:30:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-09-11 19:31:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 481. [2024-09-11 19:31:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.0895833333333333) internal successors, (523), 480 states have internal predecessors, (523), 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) [2024-09-11 19:31:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 523 transitions. [2024-09-11 19:31:00,075 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 523 transitions. Word has length 59 [2024-09-11 19:31:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:31:00,075 INFO L474 AbstractCegarLoop]: Abstraction has 481 states and 523 transitions. [2024-09-11 19:31:00,075 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 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) [2024-09-11 19:31:00,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 523 transitions. [2024-09-11 19:31:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-11 19:31:00,076 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:31:00,076 INFO L216 NwaCegarLoop]: trace histogram [28, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:31:00,088 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-11 19:31:00,277 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:00,277 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:31:00,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:31:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash -287764382, now seen corresponding path program 51 times [2024-09-11 19:31:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:31:00,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462654306] [2024-09-11 19:31:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:31:00,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:31:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:31:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-11 19:31:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:31:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462654306] [2024-09-11 19:31:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462654306] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:31:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699111030] [2024-09-11 19:31:01,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:31:01,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:31:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:31:01,154 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:31:01,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-11 19:31:01,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-11 19:31:01,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:31:01,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 19:31:01,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:31:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2024-09-11 19:31:02,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:31:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2024-09-11 19:31:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699111030] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:31:03,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:31:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 26, 26] total 79 [2024-09-11 19:31:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961651311] [2024-09-11 19:31:03,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:31:03,455 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-11 19:31:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:31:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-11 19:31:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=5804, Unknown=0, NotChecked=0, Total=6162 [2024-09-11 19:31:03,456 INFO L87 Difference]: Start difference. First operand 481 states and 523 transitions. Second operand has 79 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 79 states have internal predecessors, (89), 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)