./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --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/loop-invgen/down.i -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 d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --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 19:22:13,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:22:13,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:22:13,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:22:13,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:22:13,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:22:13,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:22:13,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:22:13,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:22:13,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:22:13,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:22:13,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:22:13,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:22:13,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:22:13,862 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:22:13,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:22:13,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:22:13,863 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:22:13,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:22:13,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:22:13,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:22:13,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:22:13,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:22:13,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:22:13,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:22:13,868 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:22:13,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:22:13,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:22:13,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:22:13,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:22:13,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:22:13,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:22:13,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:22:13,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:22:13,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:22:13,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:22:13,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:22:13,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:22:13,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:22:13,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:22:13,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:22:13,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:22:13,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:22:14,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:22:14,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:22:14,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:22:14,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:22:14,163 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:22:14,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-09-11 19:22:15,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:22:15,726 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:22:15,727 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-09-11 19:22:15,740 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9dbbb9964/797a3f00339d4b6191812bb24ff7cb7d/FLAGb21df9f83 [2024-09-11 19:22:15,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9dbbb9964/797a3f00339d4b6191812bb24ff7cb7d [2024-09-11 19:22:15,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:22:15,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:22:15,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:22:15,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:22:15,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:22:15,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260de8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:15, skipping insertion in model container [2024-09-11 19:22:15,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:22:15" (1/1) ... [2024-09-11 19:22:15,805 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:22:15,949 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/loop-invgen/down.i[893,906] [2024-09-11 19:22:15,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:22:15,977 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:22:15,989 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/loop-invgen/down.i[893,906] [2024-09-11 19:22:15,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:22:16,011 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:22:16,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16 WrapperNode [2024-09-11 19:22:16,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:22:16,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:22:16,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:22:16,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:22:16,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,048 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2024-09-11 19:22:16,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:22:16,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:22:16,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:22:16,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:22:16,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,069 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 19:22:16,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:22:16,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:22:16,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:22:16,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:22:16,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (1/1) ... [2024-09-11 19:22:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:22:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:16,111 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 19:22:16,113 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 19:22:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:22:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:22:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:22:16,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:22:16,201 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:22:16,203 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:22:16,288 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-11 19:22:16,289 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:22:16,308 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:22:16,309 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-11 19:22:16,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:22:16 BoogieIcfgContainer [2024-09-11 19:22:16,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:22:16,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:22:16,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:22:16,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:22:16,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:22:15" (1/3) ... [2024-09-11 19:22:16,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b86a79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:22:16, skipping insertion in model container [2024-09-11 19:22:16,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:22:16" (2/3) ... [2024-09-11 19:22:16,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b86a79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:22:16, skipping insertion in model container [2024-09-11 19:22:16,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:22:16" (3/3) ... [2024-09-11 19:22:16,319 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-09-11 19:22:16,337 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:22:16,337 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:22:16,381 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:22:16,386 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;@49362c67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:22:16,386 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:22:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 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 19:22:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:22:16,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:16,396 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:22:16,397 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:16,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2138998487, now seen corresponding path program 1 times [2024-09-11 19:22:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801506068] [2024-09-11 19:22:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:16,637 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 19:22:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801506068] [2024-09-11 19:22:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801506068] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:22:16,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:22:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-11 19:22:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365471288] [2024-09-11 19:22:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:22:16,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:22:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:16,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:22:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:22:16,676 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 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) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 19:22:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:16,733 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2024-09-11 19:22:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:22:16,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-09-11 19:22:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:16,746 INFO L225 Difference]: With dead ends: 21 [2024-09-11 19:22:16,746 INFO L226 Difference]: Without dead ends: 9 [2024-09-11 19:22:16,749 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 19:22:16,754 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:16,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-09-11 19:22:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-09-11 19:22:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 19:22:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-09-11 19:22:16,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2024-09-11 19:22:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:16,801 INFO L474 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-09-11 19:22:16,802 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 19:22:16,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-09-11 19:22:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:22:16,813 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:16,814 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:16,814 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:22:16,814 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:16,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:16,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1832997516, now seen corresponding path program 1 times [2024-09-11 19:22:16,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:16,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844311638] [2024-09-11 19:22:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:16,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844311638] [2024-09-11 19:22:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844311638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:17,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571839210] [2024-09-11 19:22:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:17,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:17,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:17,035 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 19:22:17,037 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 19:22:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:17,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-11 19:22:17,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:17,168 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 19:22:17,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-11 19:22:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571839210] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:22:17,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-11 19:22:17,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-09-11 19:22:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561395783] [2024-09-11 19:22:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:22:17,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 19:22:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 19:22:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-11 19:22:17,176 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 19:22:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:17,225 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-09-11 19:22:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 19:22:17,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2024-09-11 19:22:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:17,227 INFO L225 Difference]: With dead ends: 19 [2024-09-11 19:22:17,227 INFO L226 Difference]: Without dead ends: 17 [2024-09-11 19:22:17,227 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:22:17,229 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:17,229 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:17,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-11 19:22:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2024-09-11 19:22:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 19:22:17,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-09-11 19:22:17,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2024-09-11 19:22:17,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:17,237 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-09-11 19:22:17,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 19:22:17,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-09-11 19:22:17,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:22:17,239 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:17,239 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:17,253 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 19:22:17,440 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:17,441 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:17,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -609977531, now seen corresponding path program 1 times [2024-09-11 19:22:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917727199] [2024-09-11 19:22:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917727199] [2024-09-11 19:22:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917727199] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:17,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414191354] [2024-09-11 19:22:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:17,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:17,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:17,579 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 19:22:17,581 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 19:22:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:17,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 19:22:17,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414191354] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:17,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:17,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-09-11 19:22:17,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775851831] [2024-09-11 19:22:17,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:17,723 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:22:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:17,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:22:17,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:22:17,724 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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 19:22:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:17,756 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-09-11 19:22:17,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 19:22:17,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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 19:22:17,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:17,758 INFO L225 Difference]: With dead ends: 22 [2024-09-11 19:22:17,758 INFO L226 Difference]: Without dead ends: 12 [2024-09-11 19:22:17,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:22:17,759 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:17,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-11 19:22:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-11 19:22:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 19:22:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-09-11 19:22:17,764 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2024-09-11 19:22:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:17,764 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-09-11 19:22:17,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 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 19:22:17,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-09-11 19:22:17,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 19:22:17,766 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:17,766 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:22:17,782 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 19:22:17,966 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:17,967 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:17,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1749586448, now seen corresponding path program 2 times [2024-09-11 19:22:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339630718] [2024-09-11 19:22:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339630718] [2024-09-11 19:22:18,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339630718] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:18,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381153657] [2024-09-11 19:22:18,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:18,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:18,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:18,119 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 19:22:18,121 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 19:22:18,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:18,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:18,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-11 19:22:18,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381153657] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:18,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:18,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-09-11 19:22:18,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823379349] [2024-09-11 19:22:18,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:18,261 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-11 19:22:18,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-11 19:22:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-11 19:22:18,262 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.875) 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 19:22:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:18,320 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-09-11 19:22:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-11 19:22:18,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) 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 11 [2024-09-11 19:22:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:18,321 INFO L225 Difference]: With dead ends: 23 [2024-09-11 19:22:18,321 INFO L226 Difference]: Without dead ends: 21 [2024-09-11 19:22:18,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:22:18,322 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:18,323 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:18,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-11 19:22:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2024-09-11 19:22:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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 19:22:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-09-11 19:22:18,330 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2024-09-11 19:22:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:18,331 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-09-11 19:22:18,331 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) 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 19:22:18,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-09-11 19:22:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-11 19:22:18,332 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:18,332 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-09-11 19:22:18,349 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 19:22:18,532 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:18,533 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:18,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1788411607, now seen corresponding path program 3 times [2024-09-11 19:22:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936741019] [2024-09-11 19:22:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:18,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936741019] [2024-09-11 19:22:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936741019] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624949546] [2024-09-11 19:22:18,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:18,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:18,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:18,656 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 19:22:18,657 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 19:22:18,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-11 19:22:18,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:18,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 19:22:18,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:18,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624949546] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:18,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:18,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-11 19:22:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458781676] [2024-09-11 19:22:18,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:18,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:22:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:22:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:22:18,789 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 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 19:22:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:18,830 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-11 19:22:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 19:22:18,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 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 19:22:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:18,831 INFO L225 Difference]: With dead ends: 29 [2024-09-11 19:22:18,832 INFO L226 Difference]: Without dead ends: 16 [2024-09-11 19:22:18,832 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:22:18,833 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:18,833 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-11 19:22:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-11 19:22:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 19:22:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-11 19:22:18,837 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2024-09-11 19:22:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:18,837 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-11 19:22:18,837 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 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 19:22:18,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-11 19:22:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-11 19:22:18,838 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:18,838 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-09-11 19:22:18,854 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:19,039 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:19,039 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:19,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1899805300, now seen corresponding path program 4 times [2024-09-11 19:22:19,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:19,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806993208] [2024-09-11 19:22:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:19,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806993208] [2024-09-11 19:22:19,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806993208] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448506255] [2024-09-11 19:22:19,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:19,129 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 19:22:19,131 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 19:22:19,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:19,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:19,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:22:19,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448506255] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:19,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-09-11 19:22:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325369487] [2024-09-11 19:22:19,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:19,268 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-11 19:22:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-11 19:22:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-11 19:22:19,269 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 19:22:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:19,323 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2024-09-11 19:22:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 19:22:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 15 [2024-09-11 19:22:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:19,324 INFO L225 Difference]: With dead ends: 27 [2024-09-11 19:22:19,324 INFO L226 Difference]: Without dead ends: 25 [2024-09-11 19:22:19,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:22:19,325 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:19,326 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-11 19:22:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2024-09-11 19:22:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 19:22:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-09-11 19:22:19,332 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2024-09-11 19:22:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:19,332 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-09-11 19:22:19,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 19:22:19,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-09-11 19:22:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 19:22:19,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:19,334 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-09-11 19:22:19,346 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 19:22:19,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-11 19:22:19,536 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:19,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1974514107, now seen corresponding path program 5 times [2024-09-11 19:22:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362145333] [2024-09-11 19:22:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362145333] [2024-09-11 19:22:19,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362145333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:19,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138211025] [2024-09-11 19:22:19,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:19,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:19,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:19,656 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 19:22:19,658 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 19:22:19,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-11 19:22:19,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:19,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 19:22:19,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:19,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138211025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:19,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2024-09-11 19:22:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363789667] [2024-09-11 19:22:19,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:19,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:22:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:22:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:22:19,824 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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 19:22:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:19,876 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-11 19:22:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:22:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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 19:22:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:19,877 INFO L225 Difference]: With dead ends: 36 [2024-09-11 19:22:19,878 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 19:22:19,878 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:22:19,879 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:19,879 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 19:22:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-09-11 19:22:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 19:22:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-09-11 19:22:19,884 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2024-09-11 19:22:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:19,884 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-09-11 19:22:19,885 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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 19:22:19,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-09-11 19:22:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 19:22:19,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:19,886 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2024-09-11 19:22:19,903 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 19:22:20,090 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:20,091 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:20,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1497273840, now seen corresponding path program 6 times [2024-09-11 19:22:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821279385] [2024-09-11 19:22:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:20,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821279385] [2024-09-11 19:22:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821279385] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:20,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147352717] [2024-09-11 19:22:20,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:20,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:20,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:20,205 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 19:22:20,206 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 19:22:20,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-11 19:22:20,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:20,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:22:20,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147352717] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:20,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:20,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-09-11 19:22:20,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635749540] [2024-09-11 19:22:20,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:20,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 19:22:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:20,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 19:22:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-11 19:22:20,354 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 19:22:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:20,426 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-11 19:22:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 19:22:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 19 [2024-09-11 19:22:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:20,427 INFO L225 Difference]: With dead ends: 31 [2024-09-11 19:22:20,427 INFO L226 Difference]: Without dead ends: 29 [2024-09-11 19:22:20,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:22:20,428 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:20,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-11 19:22:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-09-11 19:22:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 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 19:22:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-11 19:22:20,440 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2024-09-11 19:22:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:20,440 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-11 19:22:20,440 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 19:22:20,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-11 19:22:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-11 19:22:20,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:20,441 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2024-09-11 19:22:20,455 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 19:22:20,641 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:20,642 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:20,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2044778199, now seen corresponding path program 7 times [2024-09-11 19:22:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:20,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437194498] [2024-09-11 19:22:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:20,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437194498] [2024-09-11 19:22:20,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437194498] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:20,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618741137] [2024-09-11 19:22:20,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:20,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:20,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:20,785 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 19:22:20,787 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 19:22:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:20,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:22:20,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618741137] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:20,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:20,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2024-09-11 19:22:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947849031] [2024-09-11 19:22:20,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:20,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:22:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:22:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:22:20,978 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 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 19:22:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:21,046 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-09-11 19:22:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-11 19:22:21,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 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 22 [2024-09-11 19:22:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:21,048 INFO L225 Difference]: With dead ends: 43 [2024-09-11 19:22:21,048 INFO L226 Difference]: Without dead ends: 24 [2024-09-11 19:22:21,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:22:21,049 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:21,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-11 19:22:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-11 19:22:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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 19:22:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-11 19:22:21,054 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2024-09-11 19:22:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:21,054 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-11 19:22:21,054 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 13 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 19:22:21,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-11 19:22:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 19:22:21,056 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:21,056 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2024-09-11 19:22:21,073 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:21,259 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:21,260 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:21,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1590139020, now seen corresponding path program 8 times [2024-09-11 19:22:21,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:21,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211222643] [2024-09-11 19:22:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211222643] [2024-09-11 19:22:21,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211222643] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530951983] [2024-09-11 19:22:21,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:21,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:21,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:21,418 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 19:22:21,420 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 19:22:21,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:21,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:21,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-11 19:22:21,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:21,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530951983] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:21,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-09-11 19:22:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784076203] [2024-09-11 19:22:21,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:21,591 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 19:22:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 19:22:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-11 19:22:21,592 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 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 19:22:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:21,673 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-09-11 19:22:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-11 19:22:21,674 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 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 23 [2024-09-11 19:22:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:21,675 INFO L225 Difference]: With dead ends: 35 [2024-09-11 19:22:21,675 INFO L226 Difference]: Without dead ends: 33 [2024-09-11 19:22:21,676 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:21,677 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:21,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-11 19:22:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2024-09-11 19:22:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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 19:22:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-11 19:22:21,683 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2024-09-11 19:22:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:21,683 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-11 19:22:21,683 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 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 19:22:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-11 19:22:21,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 19:22:21,684 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:21,684 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2024-09-11 19:22:21,701 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 19:22:21,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-11 19:22:21,889 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:21,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1662550341, now seen corresponding path program 9 times [2024-09-11 19:22:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:21,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263701923] [2024-09-11 19:22:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263701923] [2024-09-11 19:22:22,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263701923] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:22,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681805382] [2024-09-11 19:22:22,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:22,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:22,039 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 19:22:22,041 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 19:22:22,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 19:22:22,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:22,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-11 19:22:22,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681805382] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:22,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-09-11 19:22:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258448327] [2024-09-11 19:22:22,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:22,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:22:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:22:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:22,250 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 19:22:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:22,310 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-09-11 19:22:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 19:22:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 19:22:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:22,311 INFO L225 Difference]: With dead ends: 50 [2024-09-11 19:22:22,311 INFO L226 Difference]: Without dead ends: 28 [2024-09-11 19:22:22,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:22,312 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:22,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-11 19:22:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-11 19:22:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 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 19:22:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-09-11 19:22:22,320 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2024-09-11 19:22:22,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:22,320 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-09-11 19:22:22,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 19:22:22,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:22,321 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-09-11 19:22:22,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-11 19:22:22,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:22,321 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2024-09-11 19:22:22,338 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 19:22:22,522 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 19:22:22,522 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:22,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1216110064, now seen corresponding path program 10 times [2024-09-11 19:22:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:22,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439060023] [2024-09-11 19:22:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:22,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:22,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439060023] [2024-09-11 19:22:22,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439060023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:22,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091448799] [2024-09-11 19:22:22,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:22,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:22,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:22,674 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 19:22:22,675 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 19:22:22,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:22,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:22,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:22:22,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:22,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091448799] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:22,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:22,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-09-11 19:22:22,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931944042] [2024-09-11 19:22:22,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:22,866 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 19:22:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 19:22:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-11 19:22:22,867 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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 19:22:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:22,954 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2024-09-11 19:22:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-11 19:22:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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 27 [2024-09-11 19:22:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:22,955 INFO L225 Difference]: With dead ends: 39 [2024-09-11 19:22:22,955 INFO L226 Difference]: Without dead ends: 37 [2024-09-11 19:22:22,955 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:22:22,957 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:22,958 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-11 19:22:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-09-11 19:22:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 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 19:22:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-11 19:22:22,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2024-09-11 19:22:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:22,963 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-11 19:22:22,963 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 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 19:22:22,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-11 19:22:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-11 19:22:22,966 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:22,966 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2024-09-11 19:22:22,982 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 19:22:23,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:23,171 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:23,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1080954583, now seen corresponding path program 11 times [2024-09-11 19:22:23,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:23,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905365993] [2024-09-11 19:22:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:23,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905365993] [2024-09-11 19:22:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905365993] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846499508] [2024-09-11 19:22:23,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:23,371 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 19:22:23,372 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 19:22:23,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-11 19:22:23,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:23,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-11 19:22:23,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:23,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:23,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846499508] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:23,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:23,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2024-09-11 19:22:23,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628869660] [2024-09-11 19:22:23,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:23,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:22:23,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:22:23,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:22:23,604 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 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 19:22:23,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:23,678 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2024-09-11 19:22:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-11 19:22:23,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 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 19:22:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:23,679 INFO L225 Difference]: With dead ends: 57 [2024-09-11 19:22:23,679 INFO L226 Difference]: Without dead ends: 32 [2024-09-11 19:22:23,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:22:23,680 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:23,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-11 19:22:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-11 19:22:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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 19:22:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-11 19:22:23,685 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2024-09-11 19:22:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:23,685 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-11 19:22:23,685 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 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 19:22:23,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-11 19:22:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-11 19:22:23,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:23,686 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2024-09-11 19:22:23,703 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 19:22:23,887 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 19:22:23,887 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:23,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1264995212, now seen corresponding path program 12 times [2024-09-11 19:22:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:23,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420587702] [2024-09-11 19:22:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:24,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420587702] [2024-09-11 19:22:24,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420587702] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623907712] [2024-09-11 19:22:24,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:24,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:24,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:24,055 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 19:22:24,056 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 19:22:24,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-11 19:22:24,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:24,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:22:24,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623907712] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:24,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2024-09-11 19:22:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470346121] [2024-09-11 19:22:24,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:24,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 19:22:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 19:22:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-09-11 19:22:24,285 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 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 19:22:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:24,371 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-11 19:22:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-11 19:22:24,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 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 31 [2024-09-11 19:22:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:24,372 INFO L225 Difference]: With dead ends: 43 [2024-09-11 19:22:24,373 INFO L226 Difference]: Without dead ends: 41 [2024-09-11 19:22:24,373 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:24,374 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:24,374 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-11 19:22:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2024-09-11 19:22:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 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 19:22:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-09-11 19:22:24,378 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2024-09-11 19:22:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:24,379 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-09-11 19:22:24,379 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 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 19:22:24,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-09-11 19:22:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-11 19:22:24,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:24,380 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2024-09-11 19:22:24,398 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-11 19:22:24,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 19:22:24,580 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:24,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1424485307, now seen corresponding path program 13 times [2024-09-11 19:22:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377286631] [2024-09-11 19:22:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377286631] [2024-09-11 19:22:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377286631] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784877929] [2024-09-11 19:22:24,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:24,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:24,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:24,813 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 19:22:24,815 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 19:22:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:24,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-11 19:22:24,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:24,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784877929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:25,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 19 [2024-09-11 19:22:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422770404] [2024-09-11 19:22:25,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:25,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:22:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:22:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:25,109 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 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 19:22:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:25,163 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-09-11 19:22:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-11 19:22:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 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 19:22:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:25,170 INFO L225 Difference]: With dead ends: 64 [2024-09-11 19:22:25,170 INFO L226 Difference]: Without dead ends: 36 [2024-09-11 19:22:25,170 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:25,171 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:25,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:25,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-11 19:22:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-11 19:22:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 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 19:22:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-11 19:22:25,177 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2024-09-11 19:22:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:25,177 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-11 19:22:25,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 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 19:22:25,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-11 19:22:25,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-11 19:22:25,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:25,179 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2024-09-11 19:22:25,193 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:25,382 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 19:22:25,383 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:25,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2069415408, now seen corresponding path program 14 times [2024-09-11 19:22:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712949386] [2024-09-11 19:22:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:25,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712949386] [2024-09-11 19:22:25,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712949386] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:25,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138258933] [2024-09-11 19:22:25,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:25,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:25,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:25,549 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 19:22:25,550 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 19:22:25,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:25,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:25,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-11 19:22:25,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138258933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:25,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-09-11 19:22:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384881244] [2024-09-11 19:22:25,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:25,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:22:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:22:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:22:25,799 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 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 19:22:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:25,902 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2024-09-11 19:22:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-11 19:22:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 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 35 [2024-09-11 19:22:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:25,902 INFO L225 Difference]: With dead ends: 47 [2024-09-11 19:22:25,902 INFO L226 Difference]: Without dead ends: 45 [2024-09-11 19:22:25,903 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:22:25,903 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:25,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-11 19:22:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2024-09-11 19:22:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 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 19:22:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-11 19:22:25,909 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2024-09-11 19:22:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:25,910 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-11 19:22:25,910 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 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 19:22:25,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-11 19:22:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-11 19:22:25,911 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:25,911 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2024-09-11 19:22:25,927 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:26,111 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-11 19:22:26,111 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:26,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash 10967337, now seen corresponding path program 15 times [2024-09-11 19:22:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:26,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718122389] [2024-09-11 19:22:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:26,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718122389] [2024-09-11 19:22:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718122389] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972660497] [2024-09-11 19:22:26,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:26,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:26,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:26,345 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 19:22:26,346 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 19:22:26,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-11 19:22:26,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:26,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 19:22:26,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:26,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972660497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:26,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:26,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 21 [2024-09-11 19:22:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447811871] [2024-09-11 19:22:26,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:26,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:22:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:22:26,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:22:26,664 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 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 19:22:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:26,731 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2024-09-11 19:22:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-11 19:22:26,732 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 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 19:22:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:26,732 INFO L225 Difference]: With dead ends: 71 [2024-09-11 19:22:26,732 INFO L226 Difference]: Without dead ends: 40 [2024-09-11 19:22:26,733 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:22:26,733 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:26,733 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-11 19:22:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-11 19:22:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 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 19:22:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-11 19:22:26,738 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2024-09-11 19:22:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:26,738 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-11 19:22:26,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 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 19:22:26,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:26,739 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-11 19:22:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-11 19:22:26,740 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:26,740 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2024-09-11 19:22:26,756 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 19:22:26,940 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:26,940 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:26,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1891065484, now seen corresponding path program 16 times [2024-09-11 19:22:26,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:26,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750184280] [2024-09-11 19:22:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:27,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750184280] [2024-09-11 19:22:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750184280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:27,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918536112] [2024-09-11 19:22:27,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:27,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:27,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:27,123 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 19:22:27,125 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 19:22:27,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:27,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:27,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:22:27,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918536112] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:27,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:27,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2024-09-11 19:22:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886057316] [2024-09-11 19:22:27,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:27,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-11 19:22:27,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-11 19:22:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-09-11 19:22:27,392 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 19:22:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:27,497 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2024-09-11 19:22:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 19:22:27,497 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 39 [2024-09-11 19:22:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:27,498 INFO L225 Difference]: With dead ends: 51 [2024-09-11 19:22:27,498 INFO L226 Difference]: Without dead ends: 49 [2024-09-11 19:22:27,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 65 SyntacticMatches, 18 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:22:27,499 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:27,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:22:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-11 19:22:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2024-09-11 19:22:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 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 19:22:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2024-09-11 19:22:27,508 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2024-09-11 19:22:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:27,509 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2024-09-11 19:22:27,509 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 19:22:27,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2024-09-11 19:22:27,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-11 19:22:27,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:27,510 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2024-09-11 19:22:27,527 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 19:22:27,710 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-11 19:22:27,711 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:27,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash 359008069, now seen corresponding path program 17 times [2024-09-11 19:22:27,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:27,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980064349] [2024-09-11 19:22:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:27,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980064349] [2024-09-11 19:22:27,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980064349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835766422] [2024-09-11 19:22:27,990 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:27,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:27,991 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 19:22:27,994 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 19:22:28,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-11 19:22:28,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:28,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-11 19:22:28,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:28,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835766422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:28,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:28,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2024-09-11 19:22:28,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143371] [2024-09-11 19:22:28,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:28,311 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:22:28,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:22:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:22:28,312 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 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 19:22:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:28,371 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-09-11 19:22:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-11 19:22:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 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 42 [2024-09-11 19:22:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:28,372 INFO L225 Difference]: With dead ends: 78 [2024-09-11 19:22:28,372 INFO L226 Difference]: Without dead ends: 44 [2024-09-11 19:22:28,373 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:22:28,373 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:28,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-11 19:22:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-11 19:22:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 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 19:22:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2024-09-11 19:22:28,378 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2024-09-11 19:22:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:28,378 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2024-09-11 19:22:28,379 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 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 19:22:28,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2024-09-11 19:22:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-11 19:22:28,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:28,380 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2024-09-11 19:22:28,397 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 19:22:28,583 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:28,584 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:28,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1715745296, now seen corresponding path program 18 times [2024-09-11 19:22:28,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:28,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090879198] [2024-09-11 19:22:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:28,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:28,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:28,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090879198] [2024-09-11 19:22:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090879198] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528548508] [2024-09-11 19:22:28,797 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:28,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:28,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:28,799 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 19:22:28,800 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 19:22:28,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-11 19:22:28,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:28,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:22:28,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:28,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528548508] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:29,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:29,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-09-11 19:22:29,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330207553] [2024-09-11 19:22:29,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:29,105 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 19:22:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 19:22:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:22:29,107 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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 19:22:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:29,240 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-11 19:22:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-11 19:22:29,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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 19:22:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:29,241 INFO L225 Difference]: With dead ends: 55 [2024-09-11 19:22:29,242 INFO L226 Difference]: Without dead ends: 53 [2024-09-11 19:22:29,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:22:29,242 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:29,243 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-11 19:22:29,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-09-11 19:22:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 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 19:22:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-11 19:22:29,248 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2024-09-11 19:22:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:29,248 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-11 19:22:29,248 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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 19:22:29,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-11 19:22:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 19:22:29,249 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:29,249 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2024-09-11 19:22:29,263 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:29,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:29,454 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:29,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash -632856279, now seen corresponding path program 19 times [2024-09-11 19:22:29,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:29,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775362923] [2024-09-11 19:22:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:29,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:29,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:29,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775362923] [2024-09-11 19:22:29,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775362923] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:29,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851773243] [2024-09-11 19:22:29,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:29,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:29,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:29,775 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 19:22:29,777 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 19:22:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:29,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:22:29,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:29,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851773243] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:30,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:30,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 25 [2024-09-11 19:22:30,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352521769] [2024-09-11 19:22:30,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:30,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:22:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:22:30,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:22:30,092 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 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 19:22:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:30,197 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-11 19:22:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 19:22:30,198 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 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 19:22:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:30,198 INFO L225 Difference]: With dead ends: 85 [2024-09-11 19:22:30,198 INFO L226 Difference]: Without dead ends: 48 [2024-09-11 19:22:30,199 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:22:30,200 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:30,200 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-11 19:22:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-11 19:22:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 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 19:22:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-11 19:22:30,206 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2024-09-11 19:22:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:30,206 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-11 19:22:30,206 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 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 19:22:30,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-11 19:22:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 19:22:30,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:30,208 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2024-09-11 19:22:30,223 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 19:22:30,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-11 19:22:30,412 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:30,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash -416469388, now seen corresponding path program 20 times [2024-09-11 19:22:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:30,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840168280] [2024-09-11 19:22:30,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:30,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840168280] [2024-09-11 19:22:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840168280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932231622] [2024-09-11 19:22:30,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:30,642 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 19:22:30,643 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 19:22:30,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:30,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:30,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-11 19:22:30,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:30,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932231622] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:30,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:30,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2024-09-11 19:22:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381513542] [2024-09-11 19:22:30,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:30,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-11 19:22:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-11 19:22:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-09-11 19:22:30,955 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 19:22:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:31,081 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2024-09-11 19:22:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 19:22:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 19:22:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:31,082 INFO L225 Difference]: With dead ends: 59 [2024-09-11 19:22:31,082 INFO L226 Difference]: Without dead ends: 57 [2024-09-11 19:22:31,083 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 78 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:22:31,083 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:31,084 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-11 19:22:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2024-09-11 19:22:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 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 19:22:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-11 19:22:31,089 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2024-09-11 19:22:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:31,089 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-11 19:22:31,089 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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 19:22:31,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-11 19:22:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-11 19:22:31,090 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:31,090 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2024-09-11 19:22:31,106 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 19:22:31,291 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:31,291 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:31,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1125800517, now seen corresponding path program 21 times [2024-09-11 19:22:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576291349] [2024-09-11 19:22:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:31,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:31,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576291349] [2024-09-11 19:22:31,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576291349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:31,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20987767] [2024-09-11 19:22:31,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:31,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:31,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:31,629 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 19:22:31,630 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 19:22:31,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-11 19:22:31,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:31,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-11 19:22:31,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:31,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20987767] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:32,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 27 [2024-09-11 19:22:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346173576] [2024-09-11 19:22:32,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:32,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 19:22:32,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 19:22:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:22:32,021 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 28 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 27 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 19:22:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:32,129 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2024-09-11 19:22:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-11 19:22:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 27 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 50 [2024-09-11 19:22:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:32,130 INFO L225 Difference]: With dead ends: 92 [2024-09-11 19:22:32,130 INFO L226 Difference]: Without dead ends: 52 [2024-09-11 19:22:32,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 74 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:22:32,131 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 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 19:22:32,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 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 19:22:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-11 19:22:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-09-11 19:22:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 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 19:22:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-09-11 19:22:32,135 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2024-09-11 19:22:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:32,135 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-09-11 19:22:32,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 27 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 19:22:32,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-09-11 19:22:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-11 19:22:32,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:32,136 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2024-09-11 19:22:32,148 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 19:22:32,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-11 19:22:32,337 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:32,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1569551856, now seen corresponding path program 22 times [2024-09-11 19:22:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:32,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481346348] [2024-09-11 19:22:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:32,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:32,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481346348] [2024-09-11 19:22:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481346348] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:32,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160131324] [2024-09-11 19:22:32,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:32,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:32,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:32,557 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 19:22:32,563 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 19:22:32,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:32,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:32,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:22:32,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:32,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160131324] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:32,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:32,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2024-09-11 19:22:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77418464] [2024-09-11 19:22:32,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:32,863 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 19:22:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 19:22:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2024-09-11 19:22:32,863 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 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 19:22:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:33,004 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2024-09-11 19:22:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 19:22:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 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 51 [2024-09-11 19:22:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:33,005 INFO L225 Difference]: With dead ends: 63 [2024-09-11 19:22:33,005 INFO L226 Difference]: Without dead ends: 61 [2024-09-11 19:22:33,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 24 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:22:33,006 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:33,006 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-11 19:22:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2024-09-11 19:22:33,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 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 19:22:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-11 19:22:33,011 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2024-09-11 19:22:33,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:33,011 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-11 19:22:33,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 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 19:22:33,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-11 19:22:33,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-11 19:22:33,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:33,013 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2024-09-11 19:22:33,025 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 19:22:33,213 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-11 19:22:33,213 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:33,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 794429737, now seen corresponding path program 23 times [2024-09-11 19:22:33,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:33,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324564909] [2024-09-11 19:22:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:33,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:33,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:33,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324564909] [2024-09-11 19:22:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324564909] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:33,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040792542] [2024-09-11 19:22:33,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:33,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:33,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:33,607 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 19:22:33,608 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 19:22:33,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-11 19:22:33,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:33,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-11 19:22:33,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:33,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040792542] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:33,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:33,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 29 [2024-09-11 19:22:33,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271255121] [2024-09-11 19:22:33,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:33,979 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:22:33,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:22:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:22:33,981 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 29 states have internal predecessors, (56), 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 19:22:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:34,091 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2024-09-11 19:22:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-11 19:22:34,091 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 29 states have internal predecessors, (56), 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 54 [2024-09-11 19:22:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:34,092 INFO L225 Difference]: With dead ends: 99 [2024-09-11 19:22:34,092 INFO L226 Difference]: Without dead ends: 56 [2024-09-11 19:22:34,092 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 80 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:22:34,092 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:34,093 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-11 19:22:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-11 19:22:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 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 19:22:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-11 19:22:34,098 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2024-09-11 19:22:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:34,099 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-11 19:22:34,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 29 states have internal predecessors, (56), 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 19:22:34,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-11 19:22:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-11 19:22:34,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:34,100 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2024-09-11 19:22:34,117 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:34,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-11 19:22:34,301 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:34,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1003529356, now seen corresponding path program 24 times [2024-09-11 19:22:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696395707] [2024-09-11 19:22:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:34,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:34,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696395707] [2024-09-11 19:22:34,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696395707] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:34,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643133000] [2024-09-11 19:22:34,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:34,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:34,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:34,561 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 19:22:34,562 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 19:22:34,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-11 19:22:34,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:34,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-11 19:22:34,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:34,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:34,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643133000] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:34,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:34,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 18 [2024-09-11 19:22:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465778673] [2024-09-11 19:22:34,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:34,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-11 19:22:34,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:34,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-11 19:22:34,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2024-09-11 19:22:34,898 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 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 19:22:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:35,039 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-09-11 19:22:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 19:22:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 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 19:22:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:35,040 INFO L225 Difference]: With dead ends: 67 [2024-09-11 19:22:35,040 INFO L226 Difference]: Without dead ends: 65 [2024-09-11 19:22:35,040 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 93 SyntacticMatches, 26 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:22:35,041 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:35,041 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-11 19:22:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-09-11 19:22:35,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 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 19:22:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2024-09-11 19:22:35,050 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2024-09-11 19:22:35,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:35,050 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2024-09-11 19:22:35,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 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 19:22:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:35,051 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2024-09-11 19:22:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-11 19:22:35,051 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:35,051 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2024-09-11 19:22:35,064 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:35,251 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-11 19:22:35,252 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:35,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1129123141, now seen corresponding path program 25 times [2024-09-11 19:22:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288348192] [2024-09-11 19:22:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288348192] [2024-09-11 19:22:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288348192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963677553] [2024-09-11 19:22:35,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:35,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:35,686 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 19:22:35,687 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 19:22:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:35,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-11 19:22:35,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:35,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963677553] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:36,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:36,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 31 [2024-09-11 19:22:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002773944] [2024-09-11 19:22:36,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:36,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:22:36,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:22:36,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:22:36,103 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 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 19:22:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:36,226 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2024-09-11 19:22:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 19:22:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 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 58 [2024-09-11 19:22:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:36,227 INFO L225 Difference]: With dead ends: 106 [2024-09-11 19:22:36,227 INFO L226 Difference]: Without dead ends: 60 [2024-09-11 19:22:36,228 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 86 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:22:36,228 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:36,228 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-11 19:22:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-11 19:22:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 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 19:22:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-11 19:22:36,233 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2024-09-11 19:22:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:36,233 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-11 19:22:36,233 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 31 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 19:22:36,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-11 19:22:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-11 19:22:36,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:36,234 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2024-09-11 19:22:36,246 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 19:22:36,434 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:36,435 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:36,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash -313900528, now seen corresponding path program 26 times [2024-09-11 19:22:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870734898] [2024-09-11 19:22:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:36,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:36,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870734898] [2024-09-11 19:22:36,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870734898] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:36,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099917821] [2024-09-11 19:22:36,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:36,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:36,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:36,727 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 19:22:36,729 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 19:22:36,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:36,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:36,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 19:22:36,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:36,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:37,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099917821] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:37,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:37,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2024-09-11 19:22:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125094143] [2024-09-11 19:22:37,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:37,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-11 19:22:37,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-11 19:22:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2024-09-11 19:22:37,117 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 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 19:22:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:37,282 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-11 19:22:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-11 19:22:37,282 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 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 19:22:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:37,283 INFO L225 Difference]: With dead ends: 71 [2024-09-11 19:22:37,283 INFO L226 Difference]: Without dead ends: 69 [2024-09-11 19:22:37,283 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 99 SyntacticMatches, 29 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:22:37,284 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:37,284 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-11 19:22:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-09-11 19:22:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 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 19:22:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-11 19:22:37,290 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2024-09-11 19:22:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:37,290 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-11 19:22:37,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 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 19:22:37,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-11 19:22:37,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-11 19:22:37,291 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:37,291 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2024-09-11 19:22:37,307 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-11 19:22:37,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-11 19:22:37,495 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:37,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1262005975, now seen corresponding path program 27 times [2024-09-11 19:22:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125280550] [2024-09-11 19:22:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125280550] [2024-09-11 19:22:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125280550] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690375312] [2024-09-11 19:22:37,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:37,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:37,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:37,939 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 19:22:37,939 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 19:22:38,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-11 19:22:38,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:38,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-11 19:22:38,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:38,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690375312] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:38,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 33 [2024-09-11 19:22:38,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346596043] [2024-09-11 19:22:38,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:38,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:22:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:22:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:22:38,393 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 33 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 19:22:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:38,505 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2024-09-11 19:22:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 19:22:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 33 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 62 [2024-09-11 19:22:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:38,506 INFO L225 Difference]: With dead ends: 113 [2024-09-11 19:22:38,506 INFO L226 Difference]: Without dead ends: 64 [2024-09-11 19:22:38,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 92 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:22:38,507 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:38,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-11 19:22:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-11 19:22:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 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 19:22:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-11 19:22:38,513 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2024-09-11 19:22:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:38,514 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-11 19:22:38,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 33 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 19:22:38,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-11 19:22:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-11 19:22:38,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:38,515 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2024-09-11 19:22:38,531 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-11 19:22:38,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-11 19:22:38,715 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:38,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash 3614836, now seen corresponding path program 28 times [2024-09-11 19:22:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960985254] [2024-09-11 19:22:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 105 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:39,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:39,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960985254] [2024-09-11 19:22:39,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960985254] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:39,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653382923] [2024-09-11 19:22:39,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:39,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:39,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:39,044 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 19:22:39,046 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 19:22:39,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:39,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:39,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:22:39,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:39,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:39,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653382923] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:39,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:39,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2024-09-11 19:22:39,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635754732] [2024-09-11 19:22:39,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:39,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:22:39,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:39,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:22:39,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:22:39,513 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 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 19:22:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:39,683 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2024-09-11 19:22:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 19:22:39,683 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 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 63 [2024-09-11 19:22:39,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:39,684 INFO L225 Difference]: With dead ends: 75 [2024-09-11 19:22:39,684 INFO L226 Difference]: Without dead ends: 73 [2024-09-11 19:22:39,684 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 107 SyntacticMatches, 30 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:22:39,684 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:39,684 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-11 19:22:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-09-11 19:22:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 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 19:22:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-09-11 19:22:39,690 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2024-09-11 19:22:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:39,690 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-09-11 19:22:39,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 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 19:22:39,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-09-11 19:22:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-11 19:22:39,691 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:39,691 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2024-09-11 19:22:39,704 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:39,891 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:39,892 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash 320217157, now seen corresponding path program 29 times [2024-09-11 19:22:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767459946] [2024-09-11 19:22:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:40,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:40,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767459946] [2024-09-11 19:22:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767459946] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985396676] [2024-09-11 19:22:40,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:40,444 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 19:22:40,445 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 19:22:40,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-11 19:22:40,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:40,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-11 19:22:40,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:40,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:40,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985396676] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:40,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:40,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 35 [2024-09-11 19:22:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423985340] [2024-09-11 19:22:40,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:40,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 19:22:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 19:22:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:22:40,955 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 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 19:22:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:41,067 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-09-11 19:22:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 19:22:41,068 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 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 66 [2024-09-11 19:22:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:41,068 INFO L225 Difference]: With dead ends: 120 [2024-09-11 19:22:41,068 INFO L226 Difference]: Without dead ends: 68 [2024-09-11 19:22:41,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 98 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:22:41,069 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:41,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-11 19:22:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-09-11 19:22:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 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 19:22:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2024-09-11 19:22:41,076 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2024-09-11 19:22:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:41,076 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2024-09-11 19:22:41,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 35 states have internal predecessors, (68), 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 19:22:41,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2024-09-11 19:22:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-11 19:22:41,076 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:41,077 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2024-09-11 19:22:41,089 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:41,277 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-11 19:22:41,277 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:41,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash -387753456, now seen corresponding path program 30 times [2024-09-11 19:22:41,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:41,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280384105] [2024-09-11 19:22:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:41,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:41,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280384105] [2024-09-11 19:22:41,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280384105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:41,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252539445] [2024-09-11 19:22:41,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:41,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:41,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:41,697 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 19:22:41,699 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 19:22:41,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-11 19:22:41,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:41,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:22:41,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:41,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252539445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:42,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2024-09-11 19:22:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128811634] [2024-09-11 19:22:42,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:42,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-11 19:22:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-11 19:22:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2024-09-11 19:22:42,127 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 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 19:22:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:42,315 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-09-11 19:22:42,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-11 19:22:42,315 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 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 67 [2024-09-11 19:22:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:42,316 INFO L225 Difference]: With dead ends: 79 [2024-09-11 19:22:42,316 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 19:22:42,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 114 SyntacticMatches, 32 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:22:42,317 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:42,317 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 19:22:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2024-09-11 19:22:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 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 19:22:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-11 19:22:42,325 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2024-09-11 19:22:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:42,325 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-11 19:22:42,325 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 states have internal predecessors, (71), 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 19:22:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-11 19:22:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-11 19:22:42,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:42,326 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1] [2024-09-11 19:22:42,343 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 19:22:42,527 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:42,527 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:42,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1903638825, now seen corresponding path program 31 times [2024-09-11 19:22:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:42,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443183842] [2024-09-11 19:22:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:42,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:43,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:43,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443183842] [2024-09-11 19:22:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443183842] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697638134] [2024-09-11 19:22:43,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:43,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:43,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:43,127 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 19:22:43,128 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 19:22:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:43,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-11 19:22:43,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:43,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697638134] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:43,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:43,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 37 [2024-09-11 19:22:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012599818] [2024-09-11 19:22:43,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:43,694 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:22:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:22:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:22:43,695 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 38 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 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 19:22:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:43,827 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2024-09-11 19:22:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-11 19:22:43,827 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 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 70 [2024-09-11 19:22:43,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:43,828 INFO L225 Difference]: With dead ends: 127 [2024-09-11 19:22:43,828 INFO L226 Difference]: Without dead ends: 72 [2024-09-11 19:22:43,828 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 104 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:22:43,829 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:43,829 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-11 19:22:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-11 19:22:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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 19:22:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-11 19:22:43,836 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2024-09-11 19:22:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:43,836 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-11 19:22:43,837 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 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 19:22:43,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-11 19:22:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-11 19:22:43,837 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:43,837 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1] [2024-09-11 19:22:43,852 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-11 19:22:44,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-11 19:22:44,041 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:44,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash -953379468, now seen corresponding path program 32 times [2024-09-11 19:22:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:44,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983351515] [2024-09-11 19:22:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:44,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983351515] [2024-09-11 19:22:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983351515] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153486647] [2024-09-11 19:22:44,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:44,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:44,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:44,368 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 19:22:44,369 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 19:22:44,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:44,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:44,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-11 19:22:44,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:44,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153486647] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:44,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2024-09-11 19:22:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254208447] [2024-09-11 19:22:44,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:44,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 19:22:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 19:22:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2024-09-11 19:22:44,929 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 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 19:22:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:45,106 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2024-09-11 19:22:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-11 19:22:45,106 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 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) Word has length 71 [2024-09-11 19:22:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:45,107 INFO L225 Difference]: With dead ends: 83 [2024-09-11 19:22:45,107 INFO L226 Difference]: Without dead ends: 81 [2024-09-11 19:22:45,107 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 120 SyntacticMatches, 35 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:22:45,107 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:45,108 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-11 19:22:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2024-09-11 19:22:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 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 19:22:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-09-11 19:22:45,113 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2024-09-11 19:22:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:45,113 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-09-11 19:22:45,113 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 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 19:22:45,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-09-11 19:22:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-11 19:22:45,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:45,114 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1] [2024-09-11 19:22:45,131 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:45,314 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-11 19:22:45,314 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:45,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 495817541, now seen corresponding path program 33 times [2024-09-11 19:22:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:45,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848357259] [2024-09-11 19:22:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:45,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848357259] [2024-09-11 19:22:45,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848357259] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164682641] [2024-09-11 19:22:45,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:45,839 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 19:22:45,840 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 19:22:45,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-11 19:22:45,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:45,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-11 19:22:45,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:46,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:46,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164682641] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:46,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:46,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 39 [2024-09-11 19:22:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680986910] [2024-09-11 19:22:46,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:46,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:22:46,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:22:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:22:46,421 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 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 19:22:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:46,569 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2024-09-11 19:22:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-11 19:22:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 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 74 [2024-09-11 19:22:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:46,571 INFO L225 Difference]: With dead ends: 134 [2024-09-11 19:22:46,571 INFO L226 Difference]: Without dead ends: 76 [2024-09-11 19:22:46,571 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 110 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:22:46,571 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:46,572 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-11 19:22:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-09-11 19:22:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 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 19:22:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-09-11 19:22:46,581 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2024-09-11 19:22:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:46,581 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-09-11 19:22:46,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.9) internal successors, (76), 39 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 19:22:46,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-09-11 19:22:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-11 19:22:46,582 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:46,582 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1] [2024-09-11 19:22:46,599 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-11 19:22:46,783 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-11 19:22:46,783 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:46,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1521102320, now seen corresponding path program 34 times [2024-09-11 19:22:46,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:46,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073686677] [2024-09-11 19:22:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 153 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073686677] [2024-09-11 19:22:47,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073686677] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901730310] [2024-09-11 19:22:47,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:47,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:47,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:47,177 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 19:22:47,180 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 19:22:47,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:47,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:47,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-11 19:22:47,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:47,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901730310] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:47,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:47,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2024-09-11 19:22:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940472565] [2024-09-11 19:22:47,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:47,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 19:22:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 19:22:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2024-09-11 19:22:47,706 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 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 19:22:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:47,917 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2024-09-11 19:22:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-11 19:22:47,917 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 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) Word has length 75 [2024-09-11 19:22:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:47,918 INFO L225 Difference]: With dead ends: 87 [2024-09-11 19:22:47,918 INFO L226 Difference]: Without dead ends: 85 [2024-09-11 19:22:47,918 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 127 SyntacticMatches, 37 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:22:47,919 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:47,919 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-11 19:22:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2024-09-11 19:22:47,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 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 19:22:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-11 19:22:47,926 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2024-09-11 19:22:47,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:47,926 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-11 19:22:47,926 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 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 19:22:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:47,927 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-11 19:22:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-11 19:22:47,927 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:47,927 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1] [2024-09-11 19:22:47,942 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 19:22:48,127 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-11 19:22:48,128 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:48,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1045545257, now seen corresponding path program 35 times [2024-09-11 19:22:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:48,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422190099] [2024-09-11 19:22:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:48,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:48,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422190099] [2024-09-11 19:22:48,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422190099] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865038133] [2024-09-11 19:22:48,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:48,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:48,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:48,808 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 19:22:48,809 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 19:22:48,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-11 19:22:48,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:48,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-11 19:22:48,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:48,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865038133] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:49,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:49,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 41 [2024-09-11 19:22:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35135534] [2024-09-11 19:22:49,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:49,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:22:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:22:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:22:49,429 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 42 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 41 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 19:22:49,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:49,572 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-11 19:22:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-11 19:22:49,573 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 41 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) Word has length 78 [2024-09-11 19:22:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:49,573 INFO L225 Difference]: With dead ends: 141 [2024-09-11 19:22:49,573 INFO L226 Difference]: Without dead ends: 80 [2024-09-11 19:22:49,574 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 116 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:22:49,574 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:49,575 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-11 19:22:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-11 19:22:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 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 19:22:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-11 19:22:49,581 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2024-09-11 19:22:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:49,581 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-11 19:22:49,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 41 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 19:22:49,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-11 19:22:49,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-11 19:22:49,582 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:49,582 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1] [2024-09-11 19:22:49,600 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:49,782 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:49,783 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:49,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash 385327732, now seen corresponding path program 36 times [2024-09-11 19:22:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295370456] [2024-09-11 19:22:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:50,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295370456] [2024-09-11 19:22:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295370456] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176915736] [2024-09-11 19:22:50,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:22:50,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:50,127 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 19:22:50,128 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 19:22:50,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-11 19:22:50,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:50,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-11 19:22:50,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:50,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176915736] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:50,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:50,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 24 [2024-09-11 19:22:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189104067] [2024-09-11 19:22:50,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:50,644 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-11 19:22:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-11 19:22:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2024-09-11 19:22:50,645 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 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 19:22:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:50,858 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-09-11 19:22:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-11 19:22:50,858 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 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 79 [2024-09-11 19:22:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:50,859 INFO L225 Difference]: With dead ends: 91 [2024-09-11 19:22:50,859 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 19:22:50,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 135 SyntacticMatches, 38 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:22:50,860 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:50,860 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 19:22:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2024-09-11 19:22:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 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 19:22:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2024-09-11 19:22:50,869 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2024-09-11 19:22:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:50,869 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2024-09-11 19:22:50,870 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 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 19:22:50,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2024-09-11 19:22:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-11 19:22:50,870 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:50,870 INFO L216 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1] [2024-09-11 19:22:50,885 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 19:22:51,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-11 19:22:51,071 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:51,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:51,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1144297915, now seen corresponding path program 37 times [2024-09-11 19:22:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:51,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717254450] [2024-09-11 19:22:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:51,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:51,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717254450] [2024-09-11 19:22:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717254450] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466586206] [2024-09-11 19:22:51,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:22:51,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:51,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:51,685 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 19:22:51,686 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 19:22:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:51,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-11 19:22:51,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:51,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466586206] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:52,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2024-09-11 19:22:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987763995] [2024-09-11 19:22:52,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:52,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:22:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:22:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:22:52,350 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 43 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 19:22:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:52,546 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2024-09-11 19:22:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-11 19:22:52,546 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 43 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 82 [2024-09-11 19:22:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:52,547 INFO L225 Difference]: With dead ends: 148 [2024-09-11 19:22:52,547 INFO L226 Difference]: Without dead ends: 84 [2024-09-11 19:22:52,548 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 122 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:22:52,548 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:52,548 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:22:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-11 19:22:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-09-11 19:22:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 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 19:22:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-09-11 19:22:52,557 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2024-09-11 19:22:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:52,558 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-09-11 19:22:52,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 43 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 19:22:52,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-09-11 19:22:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-11 19:22:52,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:52,559 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1] [2024-09-11 19:22:52,576 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 19:22:52,759 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-11 19:22:52,759 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:52,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash 549038608, now seen corresponding path program 38 times [2024-09-11 19:22:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677124398] [2024-09-11 19:22:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677124398] [2024-09-11 19:22:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677124398] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104089783] [2024-09-11 19:22:53,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:22:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:53,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:53,249 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 19:22:53,251 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 19:22:53,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:22:53,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:53,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-11 19:22:53,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:53,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:53,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104089783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:53,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:53,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2024-09-11 19:22:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439118947] [2024-09-11 19:22:53,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:53,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-11 19:22:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-11 19:22:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:22:53,823 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 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 19:22:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:54,057 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2024-09-11 19:22:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-11 19:22:54,058 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 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 83 [2024-09-11 19:22:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:54,058 INFO L225 Difference]: With dead ends: 95 [2024-09-11 19:22:54,058 INFO L226 Difference]: Without dead ends: 93 [2024-09-11 19:22:54,059 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 141 SyntacticMatches, 41 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:22:54,059 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:54,059 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:54,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-11 19:22:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2024-09-11 19:22:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 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 19:22:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-11 19:22:54,066 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2024-09-11 19:22:54,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:54,066 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-11 19:22:54,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 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 19:22:54,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-11 19:22:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-11 19:22:54,067 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:54,067 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1] [2024-09-11 19:22:54,079 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 19:22:54,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-11 19:22:54,268 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:54,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1178528041, now seen corresponding path program 39 times [2024-09-11 19:22:54,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:54,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827641280] [2024-09-11 19:22:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:54,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:54,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827641280] [2024-09-11 19:22:54,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827641280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:54,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730806195] [2024-09-11 19:22:54,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:22:54,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:54,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:54,972 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 19:22:54,973 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 19:22:55,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-11 19:22:55,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:55,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-11 19:22:55,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:55,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730806195] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:55,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:55,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-09-11 19:22:55,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75800977] [2024-09-11 19:22:55,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:55,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:22:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:22:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:22:55,735 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 46 states, 46 states have (on average 1.9130434782608696) internal successors, (88), 45 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 19:22:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:55,894 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2024-09-11 19:22:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-11 19:22:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9130434782608696) internal successors, (88), 45 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 86 [2024-09-11 19:22:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:55,895 INFO L225 Difference]: With dead ends: 155 [2024-09-11 19:22:55,895 INFO L226 Difference]: Without dead ends: 88 [2024-09-11 19:22:55,896 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 128 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:22:55,896 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:55,897 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-11 19:22:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-11 19:22:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 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) [2024-09-11 19:22:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-11 19:22:55,904 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2024-09-11 19:22:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:55,904 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-11 19:22:55,905 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.9130434782608696) internal successors, (88), 45 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 19:22:55,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-11 19:22:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-11 19:22:55,905 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:55,905 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1] [2024-09-11 19:22:55,917 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-11 19:22:56,105 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-09-11 19:22:56,106 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:56,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:56,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1065373556, now seen corresponding path program 40 times [2024-09-11 19:22:56,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:56,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228175498] [2024-09-11 19:22:56,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:56,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 210 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:56,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:56,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228175498] [2024-09-11 19:22:56,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228175498] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:56,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273125881] [2024-09-11 19:22:56,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:22:56,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:56,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:56,612 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 19:22:56,613 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 19:22:56,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:22:56,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:56,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 19:22:56,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:56,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:57,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273125881] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:57,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:57,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2024-09-11 19:22:57,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190728326] [2024-09-11 19:22:57,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:57,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-11 19:22:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-11 19:22:57,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2024-09-11 19:22:57,225 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 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 19:22:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:57,483 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2024-09-11 19:22:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-11 19:22:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 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 87 [2024-09-11 19:22:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:57,485 INFO L225 Difference]: With dead ends: 99 [2024-09-11 19:22:57,485 INFO L226 Difference]: Without dead ends: 97 [2024-09-11 19:22:57,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 149 SyntacticMatches, 42 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:22:57,486 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:57,486 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-11 19:22:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2024-09-11 19:22:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 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 19:22:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2024-09-11 19:22:57,497 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2024-09-11 19:22:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:57,497 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2024-09-11 19:22:57,497 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 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 19:22:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2024-09-11 19:22:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-11 19:22:57,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:57,498 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1] [2024-09-11 19:22:57,512 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 19:22:57,698 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:57,699 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:57,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1259890363, now seen corresponding path program 41 times [2024-09-11 19:22:57,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:57,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291966294] [2024-09-11 19:22:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:22:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:58,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:22:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291966294] [2024-09-11 19:22:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291966294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:22:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781459258] [2024-09-11 19:22:58,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:22:58,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:22:58,425 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 19:22:58,426 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 19:22:58,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-11 19:22:58,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:22:58,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-11 19:22:58,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:22:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:58,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:22:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:22:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781459258] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:22:59,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:22:59,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 47 [2024-09-11 19:22:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026980270] [2024-09-11 19:22:59,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:22:59,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:22:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:22:59,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:22:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:22:59,208 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 48 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 47 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 19:22:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:22:59,374 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2024-09-11 19:22:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-11 19:22:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 47 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) Word has length 90 [2024-09-11 19:22:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:22:59,375 INFO L225 Difference]: With dead ends: 162 [2024-09-11 19:22:59,375 INFO L226 Difference]: Without dead ends: 92 [2024-09-11 19:22:59,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 134 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:22:59,376 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:22:59,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:22:59,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-11 19:22:59,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-09-11 19:22:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 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 19:22:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2024-09-11 19:22:59,386 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2024-09-11 19:22:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:22:59,386 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2024-09-11 19:22:59,386 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 47 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 19:22:59,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2024-09-11 19:22:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-11 19:22:59,387 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:22:59,387 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1] [2024-09-11 19:22:59,404 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-11 19:22:59,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:22:59,588 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:22:59,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:22:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -953753072, now seen corresponding path program 42 times [2024-09-11 19:22:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:22:59,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192773246] [2024-09-11 19:22:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:22:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:22:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:00,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192773246] [2024-09-11 19:23:00,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192773246] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111880949] [2024-09-11 19:23:00,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:23:00,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:00,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:00,045 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 19:23:00,045 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 19:23:00,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-11 19:23:00,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:00,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 19:23:00,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:00,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:00,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111880949] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:00,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:00,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2024-09-11 19:23:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789295570] [2024-09-11 19:23:00,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:00,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 19:23:00,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 19:23:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2024-09-11 19:23:00,727 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 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 19:23:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:00,998 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2024-09-11 19:23:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-11 19:23:00,998 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 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 91 [2024-09-11 19:23:00,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:00,999 INFO L225 Difference]: With dead ends: 103 [2024-09-11 19:23:00,999 INFO L226 Difference]: Without dead ends: 101 [2024-09-11 19:23:01,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 156 SyntacticMatches, 44 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:23:01,000 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:01,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-11 19:23:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2024-09-11 19:23:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 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 19:23:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-11 19:23:01,012 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2024-09-11 19:23:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:01,012 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-11 19:23:01,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 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 19:23:01,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-11 19:23:01,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-11 19:23:01,013 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:01,013 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2024-09-11 19:23:01,026 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:01,213 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-09-11 19:23:01,214 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:01,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2044284631, now seen corresponding path program 43 times [2024-09-11 19:23:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760723696] [2024-09-11 19:23:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760723696] [2024-09-11 19:23:02,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760723696] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883956006] [2024-09-11 19:23:02,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:23:02,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:02,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:02,006 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 19:23:02,007 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 19:23:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:02,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-11 19:23:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:02,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:02,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883956006] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:02,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 49 [2024-09-11 19:23:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523005654] [2024-09-11 19:23:02,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:02,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-11 19:23:02,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:02,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-11 19:23:02,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:23:02,852 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 50 states, 50 states have (on average 1.92) internal successors, (96), 49 states have internal predecessors, (96), 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 19:23:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:03,030 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2024-09-11 19:23:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-11 19:23:03,030 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.92) internal successors, (96), 49 states have internal predecessors, (96), 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 94 [2024-09-11 19:23:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:03,031 INFO L225 Difference]: With dead ends: 169 [2024-09-11 19:23:03,031 INFO L226 Difference]: Without dead ends: 96 [2024-09-11 19:23:03,031 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 140 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:23:03,032 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:03,032 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-11 19:23:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-11 19:23:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 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 19:23:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-11 19:23:03,039 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2024-09-11 19:23:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:03,039 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-11 19:23:03,039 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.92) internal successors, (96), 49 states have internal predecessors, (96), 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 19:23:03,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-11 19:23:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-11 19:23:03,040 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:03,040 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1] [2024-09-11 19:23:03,052 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 19:23:03,240 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-11 19:23:03,240 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:03,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:03,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1655610484, now seen corresponding path program 44 times [2024-09-11 19:23:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780984753] [2024-09-11 19:23:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780984753] [2024-09-11 19:23:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780984753] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782786057] [2024-09-11 19:23:03,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:23:03,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:03,735 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 19:23:03,736 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 19:23:03,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:23:03,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:03,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-11 19:23:03,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:03,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:04,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782786057] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:04,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:04,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2024-09-11 19:23:04,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720489988] [2024-09-11 19:23:04,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:04,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 19:23:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 19:23:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2024-09-11 19:23:04,425 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 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 19:23:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:04,705 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2024-09-11 19:23:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-11 19:23:04,706 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 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 95 [2024-09-11 19:23:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:04,707 INFO L225 Difference]: With dead ends: 107 [2024-09-11 19:23:04,707 INFO L226 Difference]: Without dead ends: 105 [2024-09-11 19:23:04,707 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 162 SyntacticMatches, 47 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:23:04,707 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:04,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-11 19:23:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2024-09-11 19:23:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 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 19:23:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2024-09-11 19:23:04,718 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2024-09-11 19:23:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:04,719 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2024-09-11 19:23:04,719 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 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 19:23:04,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2024-09-11 19:23:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-11 19:23:04,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:04,720 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1] [2024-09-11 19:23:04,737 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:04,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:04,920 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:04,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:04,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1107678139, now seen corresponding path program 45 times [2024-09-11 19:23:04,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:04,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312548910] [2024-09-11 19:23:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:05,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:05,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312548910] [2024-09-11 19:23:05,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312548910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:05,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383524422] [2024-09-11 19:23:05,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:23:05,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:05,768 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 19:23:05,769 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 19:23:05,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-11 19:23:05,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:05,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-11 19:23:05,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:06,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:06,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383524422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:06,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:06,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 51 [2024-09-11 19:23:06,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464869969] [2024-09-11 19:23:06,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:06,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-11 19:23:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:06,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-11 19:23:06,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:23:06,684 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 52 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 51 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 19:23:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:06,871 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2024-09-11 19:23:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-11 19:23:06,872 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 51 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) Word has length 98 [2024-09-11 19:23:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:06,873 INFO L225 Difference]: With dead ends: 176 [2024-09-11 19:23:06,873 INFO L226 Difference]: Without dead ends: 100 [2024-09-11 19:23:06,873 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 146 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:23:06,873 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:06,874 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-11 19:23:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-11 19:23:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 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 19:23:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2024-09-11 19:23:06,882 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2024-09-11 19:23:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:06,882 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-09-11 19:23:06,882 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 51 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 19:23:06,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2024-09-11 19:23:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-11 19:23:06,883 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:06,883 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2024-09-11 19:23:06,895 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 19:23:07,083 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:07,084 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:07,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -222987760, now seen corresponding path program 46 times [2024-09-11 19:23:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705367294] [2024-09-11 19:23:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 276 proven. 829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:07,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:07,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705367294] [2024-09-11 19:23:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705367294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:07,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283146025] [2024-09-11 19:23:07,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:07,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:07,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:07,677 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 19:23:07,678 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 19:23:07,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:07,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:07,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-11 19:23:07,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:07,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283146025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:08,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:08,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2024-09-11 19:23:08,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247082451] [2024-09-11 19:23:08,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:08,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-11 19:23:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-11 19:23:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2024-09-11 19:23:08,429 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 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 19:23:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:08,723 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2024-09-11 19:23:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-11 19:23:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 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) Word has length 99 [2024-09-11 19:23:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:08,725 INFO L225 Difference]: With dead ends: 111 [2024-09-11 19:23:08,725 INFO L226 Difference]: Without dead ends: 109 [2024-09-11 19:23:08,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 170 SyntacticMatches, 48 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:23:08,726 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:08,726 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-11 19:23:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-09-11 19:23:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 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 19:23:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-11 19:23:08,737 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2024-09-11 19:23:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:08,737 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-11 19:23:08,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 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 19:23:08,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-11 19:23:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-11 19:23:08,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:08,738 INFO L216 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2024-09-11 19:23:08,750 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 19:23:08,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-09-11 19:23:08,938 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:08,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1290869033, now seen corresponding path program 47 times [2024-09-11 19:23:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:08,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647579135] [2024-09-11 19:23:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:09,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:09,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647579135] [2024-09-11 19:23:09,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647579135] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:09,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309110596] [2024-09-11 19:23:09,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:23:09,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:09,851 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 19:23:09,851 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 19:23:09,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-11 19:23:09,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:09,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-11 19:23:09,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:10,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:10,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309110596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:10,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 53 [2024-09-11 19:23:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927517358] [2024-09-11 19:23:10,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:10,787 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:23:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:23:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:23:10,788 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 54 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 53 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 19:23:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:10,998 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2024-09-11 19:23:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-11 19:23:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 53 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) Word has length 102 [2024-09-11 19:23:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:11,000 INFO L225 Difference]: With dead ends: 183 [2024-09-11 19:23:11,000 INFO L226 Difference]: Without dead ends: 104 [2024-09-11 19:23:11,001 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 152 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:23:11,001 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:11,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-11 19:23:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-11 19:23:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 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 19:23:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-11 19:23:11,014 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2024-09-11 19:23:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:11,014 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-11 19:23:11,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 53 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 19:23:11,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-11 19:23:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-11 19:23:11,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:11,015 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2024-09-11 19:23:11,032 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-11 19:23:11,215 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-11 19:23:11,216 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -194344588, now seen corresponding path program 48 times [2024-09-11 19:23:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:11,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139680169] [2024-09-11 19:23:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139680169] [2024-09-11 19:23:11,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139680169] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042190893] [2024-09-11 19:23:11,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:23:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:11,905 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 19:23:11,906 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 19:23:12,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-11 19:23:12,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:12,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-11 19:23:12,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:12,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042190893] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:12,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:12,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 30 [2024-09-11 19:23:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049144690] [2024-09-11 19:23:12,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:12,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-11 19:23:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:12,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-11 19:23:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2024-09-11 19:23:12,696 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 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 19:23:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:13,001 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2024-09-11 19:23:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-11 19:23:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 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) Word has length 103 [2024-09-11 19:23:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:13,002 INFO L225 Difference]: With dead ends: 115 [2024-09-11 19:23:13,002 INFO L226 Difference]: Without dead ends: 113 [2024-09-11 19:23:13,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 177 SyntacticMatches, 50 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:23:13,003 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:13,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:13,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-11 19:23:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2024-09-11 19:23:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 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 19:23:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2024-09-11 19:23:13,017 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2024-09-11 19:23:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:13,017 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2024-09-11 19:23:13,017 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 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 19:23:13,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2024-09-11 19:23:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-11 19:23:13,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:13,018 INFO L216 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2024-09-11 19:23:13,035 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 19:23:13,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-11 19:23:13,218 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:13,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash -98885819, now seen corresponding path program 49 times [2024-09-11 19:23:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:13,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675677041] [2024-09-11 19:23:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:13,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675677041] [2024-09-11 19:23:14,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675677041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199287422] [2024-09-11 19:23:14,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:23:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:14,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:14,216 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 19:23:14,217 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 19:23:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:14,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-11 19:23:14,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:14,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199287422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:15,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2024-09-11 19:23:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869842904] [2024-09-11 19:23:15,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:15,307 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-11 19:23:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:15,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-11 19:23:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:23:15,308 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 56 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 55 states have internal predecessors, (108), 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 19:23:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:15,558 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2024-09-11 19:23:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-11 19:23:15,558 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 55 states have internal predecessors, (108), 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 106 [2024-09-11 19:23:15,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:15,559 INFO L225 Difference]: With dead ends: 190 [2024-09-11 19:23:15,559 INFO L226 Difference]: Without dead ends: 108 [2024-09-11 19:23:15,560 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 158 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 19:23:15,560 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:15,560 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 278 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-11 19:23:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-09-11 19:23:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 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 19:23:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2024-09-11 19:23:15,573 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2024-09-11 19:23:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:15,574 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2024-09-11 19:23:15,574 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 55 states have internal predecessors, (108), 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 19:23:15,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2024-09-11 19:23:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-11 19:23:15,575 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:15,575 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2024-09-11 19:23:15,592 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 19:23:15,775 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-09-11 19:23:15,776 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:15,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1803383312, now seen corresponding path program 50 times [2024-09-11 19:23:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061575484] [2024-09-11 19:23:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061575484] [2024-09-11 19:23:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061575484] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761549013] [2024-09-11 19:23:16,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:23:16,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:16,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:16,484 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 19:23:16,485 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 19:23:16,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:23:16,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:16,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-11 19:23:16,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:16,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761549013] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:17,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:17,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2024-09-11 19:23:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287555856] [2024-09-11 19:23:17,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:17,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 19:23:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 19:23:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2024-09-11 19:23:17,358 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 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 19:23:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:17,694 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2024-09-11 19:23:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-11 19:23:17,694 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 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 107 [2024-09-11 19:23:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:17,695 INFO L225 Difference]: With dead ends: 119 [2024-09-11 19:23:17,695 INFO L226 Difference]: Without dead ends: 117 [2024-09-11 19:23:17,696 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 183 SyntacticMatches, 53 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:23:17,696 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:17,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-09-11 19:23:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2024-09-11 19:23:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 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 19:23:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-11 19:23:17,714 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2024-09-11 19:23:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:17,714 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-11 19:23:17,714 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 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 19:23:17,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-11 19:23:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-11 19:23:17,715 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:17,715 INFO L216 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2024-09-11 19:23:17,732 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:17,916 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:17,916 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:17,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1148837591, now seen corresponding path program 51 times [2024-09-11 19:23:17,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:17,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742794260] [2024-09-11 19:23:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:18,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742794260] [2024-09-11 19:23:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742794260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510095254] [2024-09-11 19:23:18,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:23:18,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:18,969 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 19:23:18,970 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 19:23:19,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-11 19:23:19,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:19,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-11 19:23:19,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:19,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510095254] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:20,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:20,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 57 [2024-09-11 19:23:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510606507] [2024-09-11 19:23:20,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:20,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-11 19:23:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-11 19:23:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:23:20,135 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 58 states, 58 states have (on average 1.9310344827586208) internal successors, (112), 57 states have internal predecessors, (112), 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 19:23:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:20,339 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-11 19:23:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-11 19:23:20,339 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9310344827586208) internal successors, (112), 57 states have internal predecessors, (112), 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 110 [2024-09-11 19:23:20,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:20,340 INFO L225 Difference]: With dead ends: 197 [2024-09-11 19:23:20,340 INFO L226 Difference]: Without dead ends: 112 [2024-09-11 19:23:20,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 164 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-11 19:23:20,341 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:20,341 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-11 19:23:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-11 19:23:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 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 19:23:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-11 19:23:20,356 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2024-09-11 19:23:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:20,357 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-11 19:23:20,357 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9310344827586208) internal successors, (112), 57 states have internal predecessors, (112), 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 19:23:20,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-11 19:23:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-09-11 19:23:20,358 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:20,358 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2024-09-11 19:23:20,376 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:20,558 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:20,558 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:20,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 983307892, now seen corresponding path program 52 times [2024-09-11 19:23:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:20,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045814466] [2024-09-11 19:23:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 351 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045814466] [2024-09-11 19:23:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045814466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339808620] [2024-09-11 19:23:21,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:21,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:21,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:21,181 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 19:23:21,181 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 19:23:21,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:21,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:21,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-11 19:23:21,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:21,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339808620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:22,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:22,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2024-09-11 19:23:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466602534] [2024-09-11 19:23:22,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:22,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-11 19:23:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-11 19:23:22,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2024-09-11 19:23:22,045 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 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 19:23:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:22,396 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2024-09-11 19:23:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-11 19:23:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 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) Word has length 111 [2024-09-11 19:23:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:22,397 INFO L225 Difference]: With dead ends: 123 [2024-09-11 19:23:22,397 INFO L226 Difference]: Without dead ends: 121 [2024-09-11 19:23:22,398 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 191 SyntacticMatches, 54 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1307, Invalid=2233, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:23:22,398 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:22,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-09-11 19:23:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2024-09-11 19:23:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 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 19:23:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2024-09-11 19:23:22,413 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2024-09-11 19:23:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:22,413 INFO L474 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2024-09-11 19:23:22,414 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 32 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 19:23:22,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2024-09-11 19:23:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-11 19:23:22,415 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:22,415 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1] [2024-09-11 19:23:22,432 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:22,615 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:22,615 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:22,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2053272133, now seen corresponding path program 53 times [2024-09-11 19:23:22,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:22,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310747154] [2024-09-11 19:23:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:23,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310747154] [2024-09-11 19:23:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310747154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956015570] [2024-09-11 19:23:23,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:23:23,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:23,744 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:23,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-11 19:23:23,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-11 19:23:23,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:23,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-11 19:23:23,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:24,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:24,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956015570] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:24,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:24,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 59 [2024-09-11 19:23:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567399643] [2024-09-11 19:23:24,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:24,924 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-11 19:23:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-11 19:23:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:23:24,925 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 60 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 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 19:23:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:25,212 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2024-09-11 19:23:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-11 19:23:25,212 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 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 114 [2024-09-11 19:23:25,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:25,213 INFO L225 Difference]: With dead ends: 204 [2024-09-11 19:23:25,213 INFO L226 Difference]: Without dead ends: 116 [2024-09-11 19:23:25,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 170 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-11 19:23:25,214 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:25,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-11 19:23:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-09-11 19:23:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 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 19:23:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2024-09-11 19:23:25,224 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2024-09-11 19:23:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:25,224 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2024-09-11 19:23:25,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.9333333333333333) internal successors, (116), 59 states have internal predecessors, (116), 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 19:23:25,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2024-09-11 19:23:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-11 19:23:25,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:25,225 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1] [2024-09-11 19:23:25,237 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:25,425 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:25,426 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:25,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash -409548272, now seen corresponding path program 54 times [2024-09-11 19:23:25,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:25,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314245061] [2024-09-11 19:23:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:25,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 378 proven. 1135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:26,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314245061] [2024-09-11 19:23:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314245061] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020531828] [2024-09-11 19:23:26,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:23:26,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:26,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:26,076 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:26,076 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-11 19:23:26,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-11 19:23:26,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:26,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-11 19:23:26,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:26,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020531828] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:27,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 33 [2024-09-11 19:23:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588942818] [2024-09-11 19:23:27,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:27,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-11 19:23:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-11 19:23:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2024-09-11 19:23:27,001 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 33 states have internal predecessors, (119), 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 19:23:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:27,351 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2024-09-11 19:23:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-11 19:23:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 33 states have internal predecessors, (119), 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 115 [2024-09-11 19:23:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:27,353 INFO L225 Difference]: With dead ends: 127 [2024-09-11 19:23:27,353 INFO L226 Difference]: Without dead ends: 125 [2024-09-11 19:23:27,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 198 SyntacticMatches, 56 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:23:27,354 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:27,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:27,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-09-11 19:23:27,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-09-11 19:23:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 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 19:23:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-11 19:23:27,365 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2024-09-11 19:23:27,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:27,366 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-11 19:23:27,366 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 33 states have internal predecessors, (119), 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 19:23:27,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-11 19:23:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-11 19:23:27,366 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:27,366 INFO L216 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1] [2024-09-11 19:23:27,378 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:27,567 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:27,567 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:27,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1154337065, now seen corresponding path program 55 times [2024-09-11 19:23:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:27,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957028260] [2024-09-11 19:23:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:27,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:28,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957028260] [2024-09-11 19:23:28,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957028260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263119682] [2024-09-11 19:23:28,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:23:28,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:28,755 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:28,756 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-11 19:23:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:28,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-11 19:23:28,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:29,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263119682] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:29,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:29,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 61 [2024-09-11 19:23:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045260473] [2024-09-11 19:23:29,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:29,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-11 19:23:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-11 19:23:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:23:29,947 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 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 19:23:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:30,188 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2024-09-11 19:23:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-11 19:23:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 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 118 [2024-09-11 19:23:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:30,190 INFO L225 Difference]: With dead ends: 211 [2024-09-11 19:23:30,190 INFO L226 Difference]: Without dead ends: 120 [2024-09-11 19:23:30,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 176 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 19:23:30,191 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:30,191 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-11 19:23:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-11 19:23:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 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 19:23:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-11 19:23:30,208 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2024-09-11 19:23:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:30,208 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-11 19:23:30,208 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 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 19:23:30,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-11 19:23:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-11 19:23:30,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:30,209 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1] [2024-09-11 19:23:30,226 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:30,409 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-09-11 19:23:30,410 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:30,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash -852802700, now seen corresponding path program 56 times [2024-09-11 19:23:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668539789] [2024-09-11 19:23:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 406 proven. 1219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668539789] [2024-09-11 19:23:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668539789] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379895413] [2024-09-11 19:23:31,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:23:31,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:31,169 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:31,169 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-11 19:23:31,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:23:31,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:31,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-11 19:23:31,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:31,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379895413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:32,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:32,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2024-09-11 19:23:32,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970127724] [2024-09-11 19:23:32,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:32,177 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 19:23:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 19:23:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 19:23:32,177 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 34 states have internal predecessors, (123), 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 19:23:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:32,539 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2024-09-11 19:23:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-09-11 19:23:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 34 states have internal predecessors, (123), 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 119 [2024-09-11 19:23:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:32,540 INFO L225 Difference]: With dead ends: 131 [2024-09-11 19:23:32,540 INFO L226 Difference]: Without dead ends: 129 [2024-09-11 19:23:32,541 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 204 SyntacticMatches, 59 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:23:32,541 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:32,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-11 19:23:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2024-09-11 19:23:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 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 19:23:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2024-09-11 19:23:32,552 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2024-09-11 19:23:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:32,553 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2024-09-11 19:23:32,553 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 34 states have internal predecessors, (123), 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 19:23:32,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2024-09-11 19:23:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-11 19:23:32,553 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:32,553 INFO L216 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1] [2024-09-11 19:23:32,569 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:32,754 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-11 19:23:32,754 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1108859579, now seen corresponding path program 57 times [2024-09-11 19:23:32,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738491625] [2024-09-11 19:23:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:34,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738491625] [2024-09-11 19:23:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738491625] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303770631] [2024-09-11 19:23:34,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:23:34,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:34,018 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:34,019 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-11 19:23:34,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-11 19:23:34,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:34,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-11 19:23:34,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:34,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303770631] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:35,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:35,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 63 [2024-09-11 19:23:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120226578] [2024-09-11 19:23:35,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:35,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-11 19:23:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-11 19:23:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:23:35,305 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 64 states, 64 states have (on average 1.9375) internal successors, (124), 63 states have internal predecessors, (124), 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 19:23:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:35,516 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2024-09-11 19:23:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-11 19:23:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.9375) internal successors, (124), 63 states have internal predecessors, (124), 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 122 [2024-09-11 19:23:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:35,517 INFO L225 Difference]: With dead ends: 218 [2024-09-11 19:23:35,517 INFO L226 Difference]: Without dead ends: 124 [2024-09-11 19:23:35,518 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 182 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-11 19:23:35,518 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:35,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-09-11 19:23:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-09-11 19:23:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 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 19:23:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2024-09-11 19:23:35,535 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2024-09-11 19:23:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:35,535 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2024-09-11 19:23:35,535 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.9375) internal successors, (124), 63 states have internal predecessors, (124), 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 19:23:35,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:35,536 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2024-09-11 19:23:35,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-11 19:23:35,536 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:35,537 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1] [2024-09-11 19:23:35,554 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:35,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-11 19:23:35,737 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:35,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1961262576, now seen corresponding path program 58 times [2024-09-11 19:23:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099351814] [2024-09-11 19:23:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:35,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 435 proven. 1306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:36,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099351814] [2024-09-11 19:23:36,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099351814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:36,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013131283] [2024-09-11 19:23:36,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:36,463 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:36,464 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-11 19:23:36,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:36,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:36,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-11 19:23:36,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:36,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013131283] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:37,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:37,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2024-09-11 19:23:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851362781] [2024-09-11 19:23:37,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:37,463 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 19:23:37,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 19:23:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=724, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 19:23:37,464 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 36 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 35 states have internal predecessors, (127), 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 19:23:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:37,853 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2024-09-11 19:23:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-11 19:23:37,853 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 35 states have internal predecessors, (127), 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 123 [2024-09-11 19:23:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:37,854 INFO L225 Difference]: With dead ends: 135 [2024-09-11 19:23:37,854 INFO L226 Difference]: Without dead ends: 133 [2024-09-11 19:23:37,854 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 212 SyntacticMatches, 60 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1586, Invalid=2704, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 19:23:37,855 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:37,855 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-11 19:23:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2024-09-11 19:23:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 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 19:23:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-11 19:23:37,866 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2024-09-11 19:23:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:37,866 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-11 19:23:37,866 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 35 states have internal predecessors, (127), 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 19:23:37,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-11 19:23:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-09-11 19:23:37,867 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:37,867 INFO L216 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2024-09-11 19:23:37,880 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:38,067 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-11 19:23:38,067 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:38,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 766513449, now seen corresponding path program 59 times [2024-09-11 19:23:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109819799] [2024-09-11 19:23:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:39,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109819799] [2024-09-11 19:23:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109819799] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532985992] [2024-09-11 19:23:39,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:23:39,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:39,430 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-11 19:23:39,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-11 19:23:39,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:39,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-11 19:23:39,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:39,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532985992] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:40,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 65 [2024-09-11 19:23:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431356242] [2024-09-11 19:23:40,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:40,779 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-11 19:23:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:40,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-11 19:23:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 19:23:40,780 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 65 states have internal predecessors, (128), 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 19:23:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:40,992 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2024-09-11 19:23:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-11 19:23:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 65 states have internal predecessors, (128), 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 126 [2024-09-11 19:23:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:40,994 INFO L225 Difference]: With dead ends: 225 [2024-09-11 19:23:40,994 INFO L226 Difference]: Without dead ends: 128 [2024-09-11 19:23:40,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 188 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-11 19:23:40,994 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:40,994 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-11 19:23:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-11 19:23:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 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 19:23:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-11 19:23:41,006 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2024-09-11 19:23:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:41,006 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-11 19:23:41,006 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 65 states have internal predecessors, (128), 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 19:23:41,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-11 19:23:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-11 19:23:41,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:41,007 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1] [2024-09-11 19:23:41,019 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-09-11 19:23:41,207 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-09-11 19:23:41,207 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:41,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash 369102964, now seen corresponding path program 60 times [2024-09-11 19:23:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142910768] [2024-09-11 19:23:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142910768] [2024-09-11 19:23:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142910768] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952481124] [2024-09-11 19:23:42,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:23:42,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:42,017 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:42,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-11 19:23:42,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-11 19:23:42,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:42,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-11 19:23:42,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:42,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952481124] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:43,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:43,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 36 [2024-09-11 19:23:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636485093] [2024-09-11 19:23:43,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:43,086 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-11 19:23:43,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-11 19:23:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2024-09-11 19:23:43,087 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 36 states have internal predecessors, (131), 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 19:23:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:43,507 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2024-09-11 19:23:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-11 19:23:43,508 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 36 states have internal predecessors, (131), 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 127 [2024-09-11 19:23:43,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:43,509 INFO L225 Difference]: With dead ends: 139 [2024-09-11 19:23:43,509 INFO L226 Difference]: Without dead ends: 137 [2024-09-11 19:23:43,510 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 219 SyntacticMatches, 62 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2024-09-11 19:23:43,510 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:43,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-11 19:23:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2024-09-11 19:23:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 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 19:23:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2024-09-11 19:23:43,523 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2024-09-11 19:23:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:43,523 INFO L474 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2024-09-11 19:23:43,523 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 36 states have internal predecessors, (131), 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 19:23:43,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2024-09-11 19:23:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-09-11 19:23:43,524 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:43,524 INFO L216 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1] [2024-09-11 19:23:43,537 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:43,724 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:43,724 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:43,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 834943045, now seen corresponding path program 61 times [2024-09-11 19:23:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267514327] [2024-09-11 19:23:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267514327] [2024-09-11 19:23:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267514327] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062271196] [2024-09-11 19:23:45,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:23:45,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:45,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:45,160 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:45,161 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-11 19:23:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:45,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-11 19:23:45,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:45,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062271196] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:46,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 67 [2024-09-11 19:23:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247481840] [2024-09-11 19:23:46,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:46,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-11 19:23:46,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-11 19:23:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-11 19:23:46,572 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 68 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 67 states have internal predecessors, (132), 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 19:23:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:46,866 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2024-09-11 19:23:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-11 19:23:46,867 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 67 states have internal predecessors, (132), 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 130 [2024-09-11 19:23:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:46,868 INFO L225 Difference]: With dead ends: 232 [2024-09-11 19:23:46,868 INFO L226 Difference]: Without dead ends: 132 [2024-09-11 19:23:46,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 194 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-11 19:23:46,869 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:46,869 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 361 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-11 19:23:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-09-11 19:23:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 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 19:23:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2024-09-11 19:23:46,888 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2024-09-11 19:23:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:46,888 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2024-09-11 19:23:46,889 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 67 states have internal predecessors, (132), 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 19:23:46,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2024-09-11 19:23:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-09-11 19:23:46,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:46,890 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1] [2024-09-11 19:23:46,908 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-11 19:23:47,090 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:47,090 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:47,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:47,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1746770448, now seen corresponding path program 62 times [2024-09-11 19:23:47,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:47,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921833874] [2024-09-11 19:23:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:47,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 496 proven. 1489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:47,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:47,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921833874] [2024-09-11 19:23:47,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921833874] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:47,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223803687] [2024-09-11 19:23:47,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:23:47,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:47,928 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:47,929 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-11 19:23:48,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:23:48,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:48,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-11 19:23:48,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:48,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:49,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223803687] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:49,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:49,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2024-09-11 19:23:49,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911410000] [2024-09-11 19:23:49,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:49,039 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 19:23:49,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 19:23:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 19:23:49,040 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 37 states have internal predecessors, (135), 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 19:23:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:49,477 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2024-09-11 19:23:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-11 19:23:49,477 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 37 states have internal predecessors, (135), 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 131 [2024-09-11 19:23:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:49,478 INFO L225 Difference]: With dead ends: 143 [2024-09-11 19:23:49,478 INFO L226 Difference]: Without dead ends: 141 [2024-09-11 19:23:49,479 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 225 SyntacticMatches, 65 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 19:23:49,479 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:49,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-11 19:23:49,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2024-09-11 19:23:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 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 19:23:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-11 19:23:49,498 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2024-09-11 19:23:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:49,499 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-11 19:23:49,499 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 37 states have internal predecessors, (135), 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 19:23:49,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-11 19:23:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-11 19:23:49,499 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:49,499 INFO L216 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1] [2024-09-11 19:23:49,512 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-09-11 19:23:49,700 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-09-11 19:23:49,700 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:49,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash 219478313, now seen corresponding path program 63 times [2024-09-11 19:23:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:49,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651944502] [2024-09-11 19:23:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:51,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:51,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651944502] [2024-09-11 19:23:51,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651944502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:51,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147276637] [2024-09-11 19:23:51,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:23:51,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:51,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:51,219 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:51,220 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-11 19:23:51,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-11 19:23:51,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:51,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-11 19:23:51,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:51,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:52,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147276637] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:52,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:52,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 69 [2024-09-11 19:23:52,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510498045] [2024-09-11 19:23:52,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:52,847 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-11 19:23:52,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-11 19:23:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 19:23:52,848 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 70 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 69 states have internal predecessors, (136), 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 19:23:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:53,082 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2024-09-11 19:23:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-11 19:23:53,083 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 69 states have internal predecessors, (136), 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 134 [2024-09-11 19:23:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:53,084 INFO L225 Difference]: With dead ends: 239 [2024-09-11 19:23:53,084 INFO L226 Difference]: Without dead ends: 136 [2024-09-11 19:23:53,085 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 200 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-11 19:23:53,085 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:53,085 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:23:53,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-11 19:23:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-11 19:23:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 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 19:23:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-11 19:23:53,106 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2024-09-11 19:23:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:53,107 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-11 19:23:53,107 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.9428571428571428) internal successors, (136), 69 states have internal predecessors, (136), 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 19:23:53,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-11 19:23:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-11 19:23:53,108 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:53,108 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1, 1] [2024-09-11 19:23:53,127 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-11 19:23:53,309 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:53,309 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:53,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -788365964, now seen corresponding path program 64 times [2024-09-11 19:23:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640064681] [2024-09-11 19:23:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 528 proven. 1585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:54,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:54,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640064681] [2024-09-11 19:23:54,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640064681] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:54,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537489187] [2024-09-11 19:23:54,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:23:54,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:54,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:54,186 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:54,187 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-11 19:23:54,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:23:54,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:54,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 19:23:54,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:54,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537489187] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:55,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2024-09-11 19:23:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140125609] [2024-09-11 19:23:55,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:55,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 19:23:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 19:23:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=844, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 19:23:55,499 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 38 states have internal predecessors, (139), 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 19:23:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:55,947 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2024-09-11 19:23:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-09-11 19:23:55,947 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 38 states have internal predecessors, (139), 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 135 [2024-09-11 19:23:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:55,948 INFO L225 Difference]: With dead ends: 147 [2024-09-11 19:23:55,948 INFO L226 Difference]: Without dead ends: 145 [2024-09-11 19:23:55,949 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 233 SyntacticMatches, 66 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1892, Invalid=3220, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:23:55,949 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:55,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:23:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-11 19:23:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-11 19:23:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 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 19:23:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2024-09-11 19:23:55,963 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 135 [2024-09-11 19:23:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:55,963 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2024-09-11 19:23:55,963 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 38 states have internal predecessors, (139), 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 19:23:55,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2024-09-11 19:23:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-09-11 19:23:55,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:55,964 INFO L216 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 1, 1, 1, 1, 1] [2024-09-11 19:23:55,977 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-11 19:23:56,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:56,164 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:23:56,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1324438715, now seen corresponding path program 65 times [2024-09-11 19:23:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:23:56,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312911144] [2024-09-11 19:23:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:23:56,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:23:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:23:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:23:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312911144] [2024-09-11 19:23:57,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312911144] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:23:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894243099] [2024-09-11 19:23:57,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:23:57,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:23:57,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:23:57,816 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:23:57,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-11 19:23:58,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-11 19:23:58,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:23:58,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-11 19:23:58,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:23:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:58,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:23:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:23:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894243099] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:23:59,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:23:59,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 71 [2024-09-11 19:23:59,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475630471] [2024-09-11 19:23:59,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:23:59,434 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-11 19:23:59,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:23:59,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-11 19:23:59,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:23:59,435 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 71 states have internal predecessors, (140), 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 19:23:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:23:59,802 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2024-09-11 19:23:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-11 19:23:59,803 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 71 states have internal predecessors, (140), 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 138 [2024-09-11 19:23:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:23:59,804 INFO L225 Difference]: With dead ends: 246 [2024-09-11 19:23:59,804 INFO L226 Difference]: Without dead ends: 140 [2024-09-11 19:23:59,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 206 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-11 19:23:59,805 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:23:59,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 463 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:23:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-11 19:23:59,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-09-11 19:23:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 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 19:23:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2024-09-11 19:23:59,820 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2024-09-11 19:23:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:23:59,820 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2024-09-11 19:23:59,820 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 71 states have internal predecessors, (140), 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 19:23:59,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:23:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2024-09-11 19:23:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-09-11 19:23:59,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:23:59,821 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1, 1] [2024-09-11 19:23:59,834 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-11 19:24:00,021 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-09-11 19:24:00,022 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:00,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash -21294576, now seen corresponding path program 66 times [2024-09-11 19:24:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:00,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293520804] [2024-09-11 19:24:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 561 proven. 1684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:00,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:00,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293520804] [2024-09-11 19:24:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293520804] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203739860] [2024-09-11 19:24:00,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:24:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:00,960 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:00,961 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-11 19:24:01,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-11 19:24:01,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:01,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-11 19:24:01,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:01,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203739860] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:02,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:02,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 39 [2024-09-11 19:24:02,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270832066] [2024-09-11 19:24:02,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:02,221 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-11 19:24:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-11 19:24:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 19:24:02,221 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 40 states, 40 states have (on average 3.575) internal successors, (143), 39 states have internal predecessors, (143), 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 19:24:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:02,704 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2024-09-11 19:24:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-09-11 19:24:02,704 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.575) internal successors, (143), 39 states have internal predecessors, (143), 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 139 [2024-09-11 19:24:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:02,705 INFO L225 Difference]: With dead ends: 151 [2024-09-11 19:24:02,705 INFO L226 Difference]: Without dead ends: 149 [2024-09-11 19:24:02,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 240 SyntacticMatches, 68 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:24:02,706 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:02,706 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:24:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-11 19:24:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2024-09-11 19:24:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 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 19:24:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-11 19:24:02,726 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 139 [2024-09-11 19:24:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:02,726 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-11 19:24:02,727 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.575) internal successors, (143), 39 states have internal predecessors, (143), 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 19:24:02,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-11 19:24:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-11 19:24:02,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:02,727 INFO L216 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 1, 1, 1, 1, 1] [2024-09-11 19:24:02,740 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-09-11 19:24:02,928 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-11 19:24:02,928 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:02,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:02,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1273266473, now seen corresponding path program 67 times [2024-09-11 19:24:02,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:02,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889937852] [2024-09-11 19:24:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889937852] [2024-09-11 19:24:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889937852] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469665011] [2024-09-11 19:24:04,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:24:04,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:04,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:04,669 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:04,670 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-11 19:24:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:04,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-11 19:24:04,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:04,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469665011] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:06,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:06,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 73 [2024-09-11 19:24:06,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245885644] [2024-09-11 19:24:06,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:06,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 19:24:06,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 19:24:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:24:06,339 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 74 states, 74 states have (on average 1.945945945945946) internal successors, (144), 73 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 19:24:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:06,633 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-11 19:24:06,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-11 19:24:06,633 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.945945945945946) internal successors, (144), 73 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) Word has length 142 [2024-09-11 19:24:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:06,634 INFO L225 Difference]: With dead ends: 253 [2024-09-11 19:24:06,635 INFO L226 Difference]: Without dead ends: 144 [2024-09-11 19:24:06,635 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 212 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 19:24:06,635 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:06,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-11 19:24:06,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-11 19:24:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 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 19:24:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-11 19:24:06,654 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2024-09-11 19:24:06,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:06,654 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-11 19:24:06,654 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.945945945945946) internal successors, (144), 73 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 19:24:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:06,654 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-11 19:24:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-09-11 19:24:06,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:06,655 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1, 1] [2024-09-11 19:24:06,668 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:06,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-11 19:24:06,855 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1944417676, now seen corresponding path program 68 times [2024-09-11 19:24:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:06,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100163826] [2024-09-11 19:24:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 595 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100163826] [2024-09-11 19:24:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100163826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254020094] [2024-09-11 19:24:07,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:24:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:07,852 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:07,852 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-11 19:24:08,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:24:08,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:08,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-11 19:24:08,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:08,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254020094] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:09,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:09,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 40 [2024-09-11 19:24:09,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928636052] [2024-09-11 19:24:09,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:09,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-11 19:24:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-11 19:24:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 19:24:09,149 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 40 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 19:24:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:09,648 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2024-09-11 19:24:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-11 19:24:09,648 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 40 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) Word has length 143 [2024-09-11 19:24:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:09,649 INFO L225 Difference]: With dead ends: 155 [2024-09-11 19:24:09,649 INFO L226 Difference]: Without dead ends: 153 [2024-09-11 19:24:09,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 246 SyntacticMatches, 71 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2111, Invalid=3589, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 19:24:09,650 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:09,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-11 19:24:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2024-09-11 19:24:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 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 19:24:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2024-09-11 19:24:09,668 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 143 [2024-09-11 19:24:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:09,668 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2024-09-11 19:24:09,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 40 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 19:24:09,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2024-09-11 19:24:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-11 19:24:09,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:09,669 INFO L216 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 1, 1, 1, 1, 1] [2024-09-11 19:24:09,682 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:09,869 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-11 19:24:09,870 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:09,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash 81755717, now seen corresponding path program 69 times [2024-09-11 19:24:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575375690] [2024-09-11 19:24:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:11,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575375690] [2024-09-11 19:24:11,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575375690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:11,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800583127] [2024-09-11 19:24:11,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:24:11,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:11,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:11,741 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:11,742 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-11 19:24:11,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-11 19:24:11,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:11,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-11 19:24:11,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:12,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800583127] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:13,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:13,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 75 [2024-09-11 19:24:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929323910] [2024-09-11 19:24:13,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:13,558 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-11 19:24:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-11 19:24:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 19:24:13,559 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 75 states have internal predecessors, (148), 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 19:24:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:13,859 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2024-09-11 19:24:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-11 19:24:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 75 states have internal predecessors, (148), 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 146 [2024-09-11 19:24:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:13,861 INFO L225 Difference]: With dead ends: 260 [2024-09-11 19:24:13,861 INFO L226 Difference]: Without dead ends: 148 [2024-09-11 19:24:13,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 218 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-11 19:24:13,862 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:13,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 336 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-11 19:24:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-09-11 19:24:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 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 19:24:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2024-09-11 19:24:13,889 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2024-09-11 19:24:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:13,890 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2024-09-11 19:24:13,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 75 states have internal predecessors, (148), 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 19:24:13,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2024-09-11 19:24:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-09-11 19:24:13,891 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:13,891 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1, 1] [2024-09-11 19:24:13,906 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-11 19:24:14,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:14,092 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:14,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1123423728, now seen corresponding path program 70 times [2024-09-11 19:24:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:14,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102670820] [2024-09-11 19:24:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:14,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 630 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102670820] [2024-09-11 19:24:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102670820] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187092180] [2024-09-11 19:24:15,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:24:15,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:15,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:15,110 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:15,111 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-11 19:24:15,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:24:15,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:15,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-11 19:24:15,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:15,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:16,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187092180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:16,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:16,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 41 [2024-09-11 19:24:16,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970916070] [2024-09-11 19:24:16,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:16,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 19:24:16,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:16,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 19:24:16,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=973, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 19:24:16,521 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 41 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 19:24:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:17,037 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2024-09-11 19:24:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-11 19:24:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 41 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) Word has length 147 [2024-09-11 19:24:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:17,039 INFO L225 Difference]: With dead ends: 159 [2024-09-11 19:24:17,039 INFO L226 Difference]: Without dead ends: 157 [2024-09-11 19:24:17,040 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 254 SyntacticMatches, 72 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2839 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2225, Invalid=3781, Unknown=0, NotChecked=0, Total=6006 [2024-09-11 19:24:17,040 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:17,040 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:17,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-11 19:24:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2024-09-11 19:24:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 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 19:24:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-11 19:24:17,063 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 147 [2024-09-11 19:24:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:17,063 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-11 19:24:17,064 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 41 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 19:24:17,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-11 19:24:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-11 19:24:17,064 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:17,064 INFO L216 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 1, 1, 1, 1, 1] [2024-09-11 19:24:17,082 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:17,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:17,268 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:17,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1526290135, now seen corresponding path program 71 times [2024-09-11 19:24:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512085113] [2024-09-11 19:24:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512085113] [2024-09-11 19:24:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512085113] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053814273] [2024-09-11 19:24:19,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:24:19,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:19,219 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:19,220 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-11 19:24:19,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-11 19:24:19,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:19,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-11 19:24:19,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:19,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053814273] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:21,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:21,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 77 [2024-09-11 19:24:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815603398] [2024-09-11 19:24:21,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:21,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-11 19:24:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:21,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-11 19:24:21,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-11 19:24:21,096 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 78 states, 78 states have (on average 1.9487179487179487) internal successors, (152), 77 states have internal predecessors, (152), 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 19:24:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:21,450 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2024-09-11 19:24:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-11 19:24:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.9487179487179487) internal successors, (152), 77 states have internal predecessors, (152), 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 150 [2024-09-11 19:24:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:21,452 INFO L225 Difference]: With dead ends: 267 [2024-09-11 19:24:21,452 INFO L226 Difference]: Without dead ends: 152 [2024-09-11 19:24:21,452 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 224 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-11 19:24:21,453 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:21,453 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:24:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-11 19:24:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-11 19:24:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 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 19:24:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-11 19:24:21,476 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 150 [2024-09-11 19:24:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:21,476 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-11 19:24:21,476 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.9487179487179487) internal successors, (152), 77 states have internal predecessors, (152), 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 19:24:21,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-11 19:24:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-11 19:24:21,477 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:21,477 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1, 1] [2024-09-11 19:24:21,493 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-11 19:24:21,677 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:21,678 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:21,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash 657471348, now seen corresponding path program 72 times [2024-09-11 19:24:21,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:21,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998856448] [2024-09-11 19:24:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 666 proven. 1999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:22,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:22,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998856448] [2024-09-11 19:24:22,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998856448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:22,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491062266] [2024-09-11 19:24:22,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:24:22,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:22,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:22,748 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:22,749 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-11 19:24:22,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-11 19:24:22,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:22,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-11 19:24:22,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 703 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:23,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 703 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:24,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491062266] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:24,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:24,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 42 [2024-09-11 19:24:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147808001] [2024-09-11 19:24:24,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:24,254 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-11 19:24:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-11 19:24:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 19:24:24,255 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 42 states have internal predecessors, (155), 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 19:24:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:24,789 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2024-09-11 19:24:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-11 19:24:24,790 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 42 states have internal predecessors, (155), 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 151 [2024-09-11 19:24:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:24,791 INFO L225 Difference]: With dead ends: 163 [2024-09-11 19:24:24,791 INFO L226 Difference]: Without dead ends: 161 [2024-09-11 19:24:24,792 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 261 SyntacticMatches, 74 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2342, Invalid=3978, Unknown=0, NotChecked=0, Total=6320 [2024-09-11 19:24:24,792 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:24,792 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-11 19:24:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2024-09-11 19:24:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 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 19:24:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2024-09-11 19:24:24,818 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 151 [2024-09-11 19:24:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:24,819 INFO L474 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2024-09-11 19:24:24,819 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.604651162790698) internal successors, (155), 42 states have internal predecessors, (155), 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 19:24:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2024-09-11 19:24:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-09-11 19:24:24,820 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:24,820 INFO L216 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 1, 1, 1, 1, 1] [2024-09-11 19:24:24,838 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-11 19:24:25,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:25,021 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:25,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1682878789, now seen corresponding path program 73 times [2024-09-11 19:24:25,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:25,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994294115] [2024-09-11 19:24:25,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:25,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:27,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994294115] [2024-09-11 19:24:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994294115] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255750734] [2024-09-11 19:24:27,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:24:27,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:27,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:27,015 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:27,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-11 19:24:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:27,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-11 19:24:27,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:27,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255750734] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:28,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 79 [2024-09-11 19:24:28,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997870442] [2024-09-11 19:24:28,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:28,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-11 19:24:28,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-11 19:24:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-11 19:24:28,947 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 80 states, 80 states have (on average 1.95) internal successors, (156), 79 states have internal predecessors, (156), 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 19:24:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:29,322 INFO L93 Difference]: Finished difference Result 274 states and 276 transitions. [2024-09-11 19:24:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-11 19:24:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.95) internal successors, (156), 79 states have internal predecessors, (156), 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 154 [2024-09-11 19:24:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:29,324 INFO L225 Difference]: With dead ends: 274 [2024-09-11 19:24:29,324 INFO L226 Difference]: Without dead ends: 156 [2024-09-11 19:24:29,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 230 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-11 19:24:29,325 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:29,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:24:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-09-11 19:24:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-09-11 19:24:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 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 19:24:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2024-09-11 19:24:29,349 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 154 [2024-09-11 19:24:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:29,349 INFO L474 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2024-09-11 19:24:29,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.95) internal successors, (156), 79 states have internal predecessors, (156), 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 19:24:29,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2024-09-11 19:24:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-09-11 19:24:29,350 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:29,351 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1, 1] [2024-09-11 19:24:29,369 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-11 19:24:29,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:29,551 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:29,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2132943376, now seen corresponding path program 74 times [2024-09-11 19:24:29,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625094053] [2024-09-11 19:24:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 703 proven. 2110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:30,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625094053] [2024-09-11 19:24:30,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625094053] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:30,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032103452] [2024-09-11 19:24:30,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:24:30,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:30,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:30,651 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:30,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-11 19:24:30,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:24:30,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:30,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-11 19:24:30,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 741 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:31,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 741 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032103452] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:32,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:32,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 43 [2024-09-11 19:24:32,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121393113] [2024-09-11 19:24:32,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:32,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-11 19:24:32,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-11 19:24:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1064, Unknown=0, NotChecked=0, Total=1892 [2024-09-11 19:24:32,110 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 44 states, 44 states have (on average 3.6136363636363638) internal successors, (159), 43 states have internal predecessors, (159), 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 19:24:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:32,637 INFO L93 Difference]: Finished difference Result 167 states and 168 transitions. [2024-09-11 19:24:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-11 19:24:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.6136363636363638) internal successors, (159), 43 states have internal predecessors, (159), 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 155 [2024-09-11 19:24:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:32,639 INFO L225 Difference]: With dead ends: 167 [2024-09-11 19:24:32,639 INFO L226 Difference]: Without dead ends: 165 [2024-09-11 19:24:32,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 267 SyntacticMatches, 77 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2462, Invalid=4180, Unknown=0, NotChecked=0, Total=6642 [2024-09-11 19:24:32,640 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:32,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 19:24:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-09-11 19:24:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2024-09-11 19:24:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 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 19:24:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-11 19:24:32,659 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 155 [2024-09-11 19:24:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:32,660 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-11 19:24:32,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.6136363636363638) internal successors, (159), 43 states have internal predecessors, (159), 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 19:24:32,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-11 19:24:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-11 19:24:32,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:32,661 INFO L216 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 1, 1, 1, 1, 1] [2024-09-11 19:24:32,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-09-11 19:24:32,861 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:32,862 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:32,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:32,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1520209623, now seen corresponding path program 75 times [2024-09-11 19:24:32,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:32,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141517019] [2024-09-11 19:24:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141517019] [2024-09-11 19:24:34,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141517019] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103662997] [2024-09-11 19:24:34,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:24:34,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:34,953 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:34,954 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-11 19:24:35,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-11 19:24:35,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:35,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-11 19:24:35,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:35,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:36,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103662997] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:36,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 81 [2024-09-11 19:24:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176532851] [2024-09-11 19:24:36,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:36,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-11 19:24:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-11 19:24:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-11 19:24:36,955 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 82 states, 82 states have (on average 1.951219512195122) internal successors, (160), 81 states have internal predecessors, (160), 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 19:24:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:37,234 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2024-09-11 19:24:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-11 19:24:37,234 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.951219512195122) internal successors, (160), 81 states have internal predecessors, (160), 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 158 [2024-09-11 19:24:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:37,236 INFO L225 Difference]: With dead ends: 281 [2024-09-11 19:24:37,236 INFO L226 Difference]: Without dead ends: 160 [2024-09-11 19:24:37,236 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 236 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-11 19:24:37,236 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:37,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-11 19:24:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-11 19:24:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 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 19:24:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-11 19:24:37,260 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 158 [2024-09-11 19:24:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:37,260 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-11 19:24:37,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.951219512195122) internal successors, (160), 81 states have internal predecessors, (160), 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 19:24:37,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-11 19:24:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-11 19:24:37,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:37,261 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1, 1] [2024-09-11 19:24:37,274 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-11 19:24:37,461 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-09-11 19:24:37,461 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:37,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1412138100, now seen corresponding path program 76 times [2024-09-11 19:24:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001911157] [2024-09-11 19:24:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:37,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 741 proven. 2224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001911157] [2024-09-11 19:24:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001911157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526653808] [2024-09-11 19:24:38,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:24:38,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:38,623 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:38,624 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-11 19:24:38,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:24:38,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:38,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-11 19:24:38,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 780 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:38,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 780 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:40,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526653808] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:40,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:40,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 44 [2024-09-11 19:24:40,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991517558] [2024-09-11 19:24:40,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:40,189 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-11 19:24:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:40,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-11 19:24:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=1111, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 19:24:40,190 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 44 states have internal predecessors, (163), 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 19:24:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:40,786 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2024-09-11 19:24:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-11 19:24:40,786 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 44 states have internal predecessors, (163), 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 159 [2024-09-11 19:24:40,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:40,787 INFO L225 Difference]: With dead ends: 171 [2024-09-11 19:24:40,787 INFO L226 Difference]: Without dead ends: 169 [2024-09-11 19:24:40,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 275 SyntacticMatches, 78 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3310 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2585, Invalid=4387, Unknown=0, NotChecked=0, Total=6972 [2024-09-11 19:24:40,788 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:40,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:40,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-11 19:24:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2024-09-11 19:24:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 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 19:24:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2024-09-11 19:24:40,821 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 159 [2024-09-11 19:24:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:40,821 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2024-09-11 19:24:40,822 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 44 states have internal predecessors, (163), 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 19:24:40,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2024-09-11 19:24:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-09-11 19:24:40,823 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:40,823 INFO L216 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 1, 1, 1, 1, 1] [2024-09-11 19:24:40,848 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:41,023 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-11 19:24:41,023 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:41,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash -193706939, now seen corresponding path program 77 times [2024-09-11 19:24:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40681720] [2024-09-11 19:24:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40681720] [2024-09-11 19:24:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40681720] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118851879] [2024-09-11 19:24:43,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:24:43,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:43,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:43,294 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:43,295 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-11 19:24:43,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-11 19:24:43,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:43,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-11 19:24:43,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:43,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118851879] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:45,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:45,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 83 [2024-09-11 19:24:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084297987] [2024-09-11 19:24:45,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:45,390 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-11 19:24:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:45,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-11 19:24:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-11 19:24:45,391 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand has 84 states, 84 states have (on average 1.9523809523809523) internal successors, (164), 83 states have internal predecessors, (164), 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 19:24:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:45,794 INFO L93 Difference]: Finished difference Result 288 states and 290 transitions. [2024-09-11 19:24:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-11 19:24:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9523809523809523) internal successors, (164), 83 states have internal predecessors, (164), 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 162 [2024-09-11 19:24:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:45,796 INFO L225 Difference]: With dead ends: 288 [2024-09-11 19:24:45,796 INFO L226 Difference]: Without dead ends: 164 [2024-09-11 19:24:45,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 242 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-11 19:24:45,797 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:45,797 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:24:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-11 19:24:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-09-11 19:24:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 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 19:24:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2024-09-11 19:24:45,820 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 162 [2024-09-11 19:24:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:45,820 INFO L474 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2024-09-11 19:24:45,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.9523809523809523) internal successors, (164), 83 states have internal predecessors, (164), 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 19:24:45,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2024-09-11 19:24:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-09-11 19:24:45,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:45,821 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1, 1] [2024-09-11 19:24:45,838 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-09-11 19:24:46,022 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:46,022 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:46,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash 253475344, now seen corresponding path program 78 times [2024-09-11 19:24:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:46,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806178795] [2024-09-11 19:24:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:46,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 780 proven. 2341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:47,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:47,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806178795] [2024-09-11 19:24:47,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806178795] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865440081] [2024-09-11 19:24:47,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:24:47,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:47,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:47,240 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:47,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-11 19:24:47,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-11 19:24:47,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:47,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-11 19:24:47,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 820 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:47,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 820 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865440081] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:48,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 45 [2024-09-11 19:24:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300945205] [2024-09-11 19:24:48,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:48,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 19:24:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 19:24:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1159, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 19:24:48,828 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 46 states, 46 states have (on average 3.630434782608696) internal successors, (167), 45 states have internal predecessors, (167), 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 19:24:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:49,446 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2024-09-11 19:24:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-09-11 19:24:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.630434782608696) internal successors, (167), 45 states have internal predecessors, (167), 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 163 [2024-09-11 19:24:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:49,448 INFO L225 Difference]: With dead ends: 175 [2024-09-11 19:24:49,448 INFO L226 Difference]: Without dead ends: 173 [2024-09-11 19:24:49,449 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 282 SyntacticMatches, 80 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2711, Invalid=4599, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:24:49,449 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:49,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-11 19:24:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-09-11 19:24:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 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 19:24:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-11 19:24:49,467 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 163 [2024-09-11 19:24:49,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:49,467 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-11 19:24:49,467 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.630434782608696) internal successors, (167), 45 states have internal predecessors, (167), 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 19:24:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-11 19:24:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-11 19:24:49,468 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:49,468 INFO L216 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 1, 1, 1, 1, 1] [2024-09-11 19:24:49,481 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-11 19:24:49,668 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:49,669 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:49,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 736287017, now seen corresponding path program 79 times [2024-09-11 19:24:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438022826] [2024-09-11 19:24:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:51,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438022826] [2024-09-11 19:24:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438022826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849164832] [2024-09-11 19:24:51,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:24:51,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:51,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:51,959 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:51,960 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-11 19:24:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:52,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-11 19:24:52,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:52,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:54,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849164832] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:54,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:54,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 84] total 85 [2024-09-11 19:24:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659392093] [2024-09-11 19:24:54,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:54,075 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-11 19:24:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-11 19:24:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:24:54,076 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 86 states, 86 states have (on average 1.9534883720930232) internal successors, (168), 85 states have internal predecessors, (168), 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 19:24:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:54,587 INFO L93 Difference]: Finished difference Result 295 states and 297 transitions. [2024-09-11 19:24:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-11 19:24:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.9534883720930232) internal successors, (168), 85 states have internal predecessors, (168), 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 166 [2024-09-11 19:24:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:54,589 INFO L225 Difference]: With dead ends: 295 [2024-09-11 19:24:54,589 INFO L226 Difference]: Without dead ends: 168 [2024-09-11 19:24:54,589 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 248 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-11 19:24:54,590 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:54,590 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 659 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 19:24:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-11 19:24:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-11 19:24:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 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 19:24:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-11 19:24:54,618 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 166 [2024-09-11 19:24:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:54,618 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-11 19:24:54,618 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.9534883720930232) internal successors, (168), 85 states have internal predecessors, (168), 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 19:24:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-11 19:24:54,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-09-11 19:24:54,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:54,619 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1, 1] [2024-09-11 19:24:54,637 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-09-11 19:24:54,820 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:54,820 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:54,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash 385118580, now seen corresponding path program 80 times [2024-09-11 19:24:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:54,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938725594] [2024-09-11 19:24:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:54,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:24:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 820 proven. 2461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:24:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938725594] [2024-09-11 19:24:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938725594] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:24:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370685639] [2024-09-11 19:24:56,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:24:56,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:56,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:24:56,098 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:24:56,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-11 19:24:56,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:24:56,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:24:56,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-11 19:24:56,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:24:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 861 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:56,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:24:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 861 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:24:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370685639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:24:57,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:24:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 46 [2024-09-11 19:24:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114350919] [2024-09-11 19:24:57,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:24:57,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-11 19:24:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:24:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-11 19:24:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 19:24:57,745 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 47 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 46 states have internal predecessors, (171), 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 19:24:58,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:24:58,345 INFO L93 Difference]: Finished difference Result 179 states and 180 transitions. [2024-09-11 19:24:58,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-09-11 19:24:58,345 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 46 states have internal predecessors, (171), 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 167 [2024-09-11 19:24:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:24:58,346 INFO L225 Difference]: With dead ends: 179 [2024-09-11 19:24:58,346 INFO L226 Difference]: Without dead ends: 177 [2024-09-11 19:24:58,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 288 SyntacticMatches, 83 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3685 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2840, Invalid=4816, Unknown=0, NotChecked=0, Total=7656 [2024-09-11 19:24:58,347 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:24:58,347 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:24:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-11 19:24:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2024-09-11 19:24:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 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 19:24:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2024-09-11 19:24:58,376 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 167 [2024-09-11 19:24:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:24:58,376 INFO L474 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2024-09-11 19:24:58,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 46 states have internal predecessors, (171), 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 19:24:58,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2024-09-11 19:24:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-11 19:24:58,378 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:24:58,378 INFO L216 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 1, 1, 1, 1, 1] [2024-09-11 19:24:58,396 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-09-11 19:24:58,578 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:24:58,578 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:24:58,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:24:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1214789445, now seen corresponding path program 81 times [2024-09-11 19:24:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:24:58,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73252052] [2024-09-11 19:24:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:24:58,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:24:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:01,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73252052] [2024-09-11 19:25:01,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73252052] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313586558] [2024-09-11 19:25:01,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:25:01,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:01,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:01,072 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:01,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-11 19:25:01,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-11 19:25:01,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:01,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-11 19:25:01,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:01,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:03,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313586558] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:03,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:03,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 87 [2024-09-11 19:25:03,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214794816] [2024-09-11 19:25:03,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:03,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-11 19:25:03,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-11 19:25:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-11 19:25:03,344 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 88 states, 88 states have (on average 1.9545454545454546) internal successors, (172), 87 states have internal predecessors, (172), 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 19:25:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:03,707 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2024-09-11 19:25:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-11 19:25:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9545454545454546) internal successors, (172), 87 states have internal predecessors, (172), 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 170 [2024-09-11 19:25:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:03,709 INFO L225 Difference]: With dead ends: 302 [2024-09-11 19:25:03,709 INFO L226 Difference]: Without dead ends: 172 [2024-09-11 19:25:03,709 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 254 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-11 19:25:03,709 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:03,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 413 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:25:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-11 19:25:03,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-09-11 19:25:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 states have internal predecessors, (173), 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 19:25:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2024-09-11 19:25:03,739 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 170 [2024-09-11 19:25:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:03,739 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2024-09-11 19:25:03,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.9545454545454546) internal successors, (172), 87 states have internal predecessors, (172), 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 19:25:03,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2024-09-11 19:25:03,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-09-11 19:25:03,740 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:03,740 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1, 1] [2024-09-11 19:25:03,753 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:03,940 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:03,940 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1525763568, now seen corresponding path program 82 times [2024-09-11 19:25:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639149414] [2024-09-11 19:25:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 861 proven. 2584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:05,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639149414] [2024-09-11 19:25:05,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639149414] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:05,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794799055] [2024-09-11 19:25:05,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:25:05,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:05,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:05,276 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:05,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-11 19:25:05,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:25:05,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:05,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-11 19:25:05,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 903 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:05,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 903 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794799055] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:06,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:06,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 47 [2024-09-11 19:25:06,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214597800] [2024-09-11 19:25:06,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:06,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-11 19:25:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-11 19:25:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=998, Invalid=1258, Unknown=0, NotChecked=0, Total=2256 [2024-09-11 19:25:06,972 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand has 48 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 47 states have internal predecessors, (175), 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 19:25:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:07,795 INFO L93 Difference]: Finished difference Result 183 states and 184 transitions. [2024-09-11 19:25:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-11 19:25:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 47 states have internal predecessors, (175), 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 171 [2024-09-11 19:25:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:07,797 INFO L225 Difference]: With dead ends: 183 [2024-09-11 19:25:07,797 INFO L226 Difference]: Without dead ends: 181 [2024-09-11 19:25:07,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 296 SyntacticMatches, 84 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2972, Invalid=5038, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 19:25:07,799 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:07,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-09-11 19:25:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2024-09-11 19:25:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 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 19:25:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-11 19:25:07,828 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 171 [2024-09-11 19:25:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:07,828 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-11 19:25:07,829 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 47 states have internal predecessors, (175), 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 19:25:07,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-11 19:25:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-11 19:25:07,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:07,830 INFO L216 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 1, 1, 1, 1, 1] [2024-09-11 19:25:07,847 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-11 19:25:08,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:08,030 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:08,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash -378740439, now seen corresponding path program 83 times [2024-09-11 19:25:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041805089] [2024-09-11 19:25:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:08,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041805089] [2024-09-11 19:25:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041805089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400072564] [2024-09-11 19:25:10,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:25:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:10,649 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:10,650 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-11 19:25:10,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-11 19:25:10,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:10,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-11 19:25:10,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:11,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:13,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400072564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:13,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 89 [2024-09-11 19:25:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057306253] [2024-09-11 19:25:13,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:13,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-11 19:25:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-11 19:25:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 19:25:13,045 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 90 states, 90 states have (on average 1.9555555555555555) internal successors, (176), 89 states have internal predecessors, (176), 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 19:25:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:13,423 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-11 19:25:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-11 19:25:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.9555555555555555) internal successors, (176), 89 states have internal predecessors, (176), 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 174 [2024-09-11 19:25:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:13,425 INFO L225 Difference]: With dead ends: 309 [2024-09-11 19:25:13,425 INFO L226 Difference]: Without dead ends: 176 [2024-09-11 19:25:13,425 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 260 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 19:25:13,425 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:13,426 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:25:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-11 19:25:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-11 19:25:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 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 19:25:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-11 19:25:13,447 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 174 [2024-09-11 19:25:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:13,447 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-11 19:25:13,447 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.9555555555555555) internal successors, (176), 89 states have internal predecessors, (176), 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 19:25:13,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-11 19:25:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-09-11 19:25:13,448 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:13,448 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1, 1] [2024-09-11 19:25:13,461 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-09-11 19:25:13,649 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:13,649 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:13,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1165164148, now seen corresponding path program 84 times [2024-09-11 19:25:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:13,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265655135] [2024-09-11 19:25:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 903 proven. 2710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:15,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265655135] [2024-09-11 19:25:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265655135] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794515715] [2024-09-11 19:25:15,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:25:15,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:15,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:15,041 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:15,043 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-11 19:25:15,324 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-11 19:25:15,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:15,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-11 19:25:15,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 946 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:15,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 946 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:16,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794515715] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:16,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:16,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 48 [2024-09-11 19:25:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803175009] [2024-09-11 19:25:16,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:16,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 19:25:16,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 19:25:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 19:25:16,833 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 48 states have internal predecessors, (179), 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 19:25:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:17,503 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2024-09-11 19:25:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-09-11 19:25:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 48 states have internal predecessors, (179), 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 175 [2024-09-11 19:25:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:17,505 INFO L225 Difference]: With dead ends: 187 [2024-09-11 19:25:17,505 INFO L226 Difference]: Without dead ends: 185 [2024-09-11 19:25:17,505 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 303 SyntacticMatches, 86 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3107, Invalid=5265, Unknown=0, NotChecked=0, Total=8372 [2024-09-11 19:25:17,506 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:17,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-11 19:25:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2024-09-11 19:25:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 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 19:25:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2024-09-11 19:25:17,538 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 175 [2024-09-11 19:25:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:17,538 INFO L474 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2024-09-11 19:25:17,539 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.6530612244897958) internal successors, (179), 48 states have internal predecessors, (179), 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 19:25:17,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2024-09-11 19:25:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-09-11 19:25:17,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:17,540 INFO L216 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 1, 1, 1, 1, 1] [2024-09-11 19:25:17,557 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-09-11 19:25:17,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:17,740 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:17,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -515732923, now seen corresponding path program 85 times [2024-09-11 19:25:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206098081] [2024-09-11 19:25:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206098081] [2024-09-11 19:25:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206098081] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056760272] [2024-09-11 19:25:20,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:25:20,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:20,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:20,403 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:20,403 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-11 19:25:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:20,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-11 19:25:20,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:20,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056760272] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:22,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 91 [2024-09-11 19:25:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392400489] [2024-09-11 19:25:22,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:22,818 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-11 19:25:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-11 19:25:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-11 19:25:22,819 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 92 states, 92 states have (on average 1.9565217391304348) internal successors, (180), 91 states have internal predecessors, (180), 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 19:25:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:23,237 INFO L93 Difference]: Finished difference Result 316 states and 318 transitions. [2024-09-11 19:25:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-11 19:25:23,237 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9565217391304348) internal successors, (180), 91 states have internal predecessors, (180), 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 178 [2024-09-11 19:25:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:23,238 INFO L225 Difference]: With dead ends: 316 [2024-09-11 19:25:23,238 INFO L226 Difference]: Without dead ends: 180 [2024-09-11 19:25:23,239 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 266 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-11 19:25:23,239 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:23,240 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:25:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-11 19:25:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-09-11 19:25:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 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 19:25:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2024-09-11 19:25:23,271 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 178 [2024-09-11 19:25:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:23,272 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2024-09-11 19:25:23,272 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.9565217391304348) internal successors, (180), 91 states have internal predecessors, (180), 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 19:25:23,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2024-09-11 19:25:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-11 19:25:23,273 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:23,273 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1, 1] [2024-09-11 19:25:23,288 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-11 19:25:23,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-09-11 19:25:23,474 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:23,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1729301008, now seen corresponding path program 86 times [2024-09-11 19:25:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:23,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841964709] [2024-09-11 19:25:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 946 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841964709] [2024-09-11 19:25:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841964709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:24,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40870953] [2024-09-11 19:25:24,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:25:24,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:24,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:24,938 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:24,939 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-11 19:25:25,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:25:25,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:25,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-11 19:25:25,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 990 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:25,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 990 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40870953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:26,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 49 [2024-09-11 19:25:26,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70045286] [2024-09-11 19:25:26,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:26,783 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-11 19:25:26,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:26,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-11 19:25:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=1361, Unknown=0, NotChecked=0, Total=2450 [2024-09-11 19:25:26,783 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 50 states, 50 states have (on average 3.66) internal successors, (183), 49 states have internal predecessors, (183), 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 19:25:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:27,455 INFO L93 Difference]: Finished difference Result 191 states and 192 transitions. [2024-09-11 19:25:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-09-11 19:25:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.66) internal successors, (183), 49 states have internal predecessors, (183), 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 179 [2024-09-11 19:25:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:27,457 INFO L225 Difference]: With dead ends: 191 [2024-09-11 19:25:27,457 INFO L226 Difference]: Without dead ends: 189 [2024-09-11 19:25:27,458 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 309 SyntacticMatches, 89 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4219 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3245, Invalid=5497, Unknown=0, NotChecked=0, Total=8742 [2024-09-11 19:25:27,458 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:27,458 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-09-11 19:25:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2024-09-11 19:25:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 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 19:25:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-11 19:25:27,488 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 179 [2024-09-11 19:25:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:27,488 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-11 19:25:27,488 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.66) internal successors, (183), 49 states have internal predecessors, (183), 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 19:25:27,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-11 19:25:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-09-11 19:25:27,489 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:27,489 INFO L216 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 1, 1, 1, 1, 1] [2024-09-11 19:25:27,502 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:27,689 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-11 19:25:27,689 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:27,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash -521565911, now seen corresponding path program 87 times [2024-09-11 19:25:27,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535855537] [2024-09-11 19:25:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535855537] [2024-09-11 19:25:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535855537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483881558] [2024-09-11 19:25:30,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:25:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:30,446 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:30,447 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-11 19:25:30,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-11 19:25:30,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:30,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-11 19:25:30,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:30,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483881558] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:33,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:33,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92, 92] total 93 [2024-09-11 19:25:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821723276] [2024-09-11 19:25:33,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:33,016 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-11 19:25:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-11 19:25:33,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-11 19:25:33,017 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 94 states, 94 states have (on average 1.9574468085106382) internal successors, (184), 93 states have internal predecessors, (184), 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 19:25:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:33,489 INFO L93 Difference]: Finished difference Result 323 states and 325 transitions. [2024-09-11 19:25:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-11 19:25:33,489 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.9574468085106382) internal successors, (184), 93 states have internal predecessors, (184), 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 182 [2024-09-11 19:25:33,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:33,491 INFO L225 Difference]: With dead ends: 323 [2024-09-11 19:25:33,491 INFO L226 Difference]: Without dead ends: 184 [2024-09-11 19:25:33,491 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 272 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-11 19:25:33,491 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:33,491 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 535 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:25:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-11 19:25:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-11 19:25:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 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 19:25:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-11 19:25:33,513 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 182 [2024-09-11 19:25:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:33,513 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-11 19:25:33,513 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.9574468085106382) internal successors, (184), 93 states have internal predecessors, (184), 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 19:25:33,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-11 19:25:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-09-11 19:25:33,514 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:33,514 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1, 1] [2024-09-11 19:25:33,535 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:33,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:33,715 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:33,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash 126823284, now seen corresponding path program 88 times [2024-09-11 19:25:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:33,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277969551] [2024-09-11 19:25:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:33,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 990 proven. 2971 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277969551] [2024-09-11 19:25:35,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277969551] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:35,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123301607] [2024-09-11 19:25:35,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:25:35,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:35,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:35,252 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:35,253 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-11 19:25:35,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:25:35,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:35,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-11 19:25:35,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 1035 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:35,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 1035 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:37,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123301607] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:37,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:37,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 50 [2024-09-11 19:25:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914696072] [2024-09-11 19:25:37,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:37,152 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-11 19:25:37,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-11 19:25:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2024-09-11 19:25:37,153 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 51 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 50 states have internal predecessors, (187), 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 19:25:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:37,852 INFO L93 Difference]: Finished difference Result 195 states and 196 transitions. [2024-09-11 19:25:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-11 19:25:37,853 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 50 states have internal predecessors, (187), 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 183 [2024-09-11 19:25:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:37,854 INFO L225 Difference]: With dead ends: 195 [2024-09-11 19:25:37,854 INFO L226 Difference]: Without dead ends: 193 [2024-09-11 19:25:37,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 317 SyntacticMatches, 90 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3386, Invalid=5734, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 19:25:37,855 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:37,855 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-09-11 19:25:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2024-09-11 19:25:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.010752688172043) internal successors, (188), 186 states have internal predecessors, (188), 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 19:25:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2024-09-11 19:25:37,881 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 183 [2024-09-11 19:25:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:37,881 INFO L474 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2024-09-11 19:25:37,881 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.6666666666666665) internal successors, (187), 50 states have internal predecessors, (187), 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 19:25:37,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:37,882 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2024-09-11 19:25:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-11 19:25:37,882 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:37,882 INFO L216 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 1, 1, 1, 1, 1] [2024-09-11 19:25:37,900 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-09-11 19:25:38,083 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:38,083 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:38,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:38,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1373946555, now seen corresponding path program 89 times [2024-09-11 19:25:38,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067077233] [2024-09-11 19:25:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:40,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:40,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067077233] [2024-09-11 19:25:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067077233] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:40,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262960601] [2024-09-11 19:25:40,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:25:40,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:40,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:40,976 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:40,977 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-11 19:25:41,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-11 19:25:41,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:41,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-11 19:25:41,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:41,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262960601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:43,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94, 94] total 95 [2024-09-11 19:25:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20881582] [2024-09-11 19:25:43,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:43,610 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-11 19:25:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-11 19:25:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 19:25:43,611 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand has 96 states, 96 states have (on average 1.9583333333333333) internal successors, (188), 95 states have internal predecessors, (188), 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 19:25:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:44,009 INFO L93 Difference]: Finished difference Result 330 states and 332 transitions. [2024-09-11 19:25:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-11 19:25:44,009 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.9583333333333333) internal successors, (188), 95 states have internal predecessors, (188), 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 186 [2024-09-11 19:25:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:44,011 INFO L225 Difference]: With dead ends: 330 [2024-09-11 19:25:44,011 INFO L226 Difference]: Without dead ends: 188 [2024-09-11 19:25:44,011 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 278 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-11 19:25:44,011 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:44,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:25:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-11 19:25:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-09-11 19:25:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 187 states have internal predecessors, (189), 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 19:25:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2024-09-11 19:25:44,048 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 186 [2024-09-11 19:25:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:44,048 INFO L474 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions. [2024-09-11 19:25:44,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.9583333333333333) internal successors, (188), 95 states have internal predecessors, (188), 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 19:25:44,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions. [2024-09-11 19:25:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-11 19:25:44,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:44,049 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1, 1] [2024-09-11 19:25:44,068 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:44,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:44,250 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:44,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash -381631984, now seen corresponding path program 90 times [2024-09-11 19:25:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:44,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721173148] [2024-09-11 19:25:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1035 proven. 3106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721173148] [2024-09-11 19:25:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721173148] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780098213] [2024-09-11 19:25:46,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:25:46,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:46,034 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:46,035 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-11 19:25:46,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-11 19:25:46,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:46,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-11 19:25:46,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1081 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:46,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1081 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780098213] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:48,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:48,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 51 [2024-09-11 19:25:48,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976540644] [2024-09-11 19:25:48,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:48,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-11 19:25:48,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-11 19:25:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2024-09-11 19:25:48,029 INFO L87 Difference]: Start difference. First operand 188 states and 189 transitions. Second operand has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 51 states have internal predecessors, (191), 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 19:25:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:48,753 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2024-09-11 19:25:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-11 19:25:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 51 states have internal predecessors, (191), 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 187 [2024-09-11 19:25:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:48,755 INFO L225 Difference]: With dead ends: 199 [2024-09-11 19:25:48,755 INFO L226 Difference]: Without dead ends: 197 [2024-09-11 19:25:48,756 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 324 SyntacticMatches, 92 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4549 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3530, Invalid=5976, Unknown=0, NotChecked=0, Total=9506 [2024-09-11 19:25:48,756 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:48,756 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-09-11 19:25:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2024-09-11 19:25:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 190 states have internal predecessors, (192), 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 19:25:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-11 19:25:48,778 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 187 [2024-09-11 19:25:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:48,779 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-11 19:25:48,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 51 states have internal predecessors, (191), 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 19:25:48,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-11 19:25:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-09-11 19:25:48,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:48,779 INFO L216 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 1, 1, 1, 1, 1] [2024-09-11 19:25:48,792 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-09-11 19:25:48,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:48,980 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -415182551, now seen corresponding path program 91 times [2024-09-11 19:25:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:48,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183283100] [2024-09-11 19:25:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:51,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183283100] [2024-09-11 19:25:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183283100] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574156589] [2024-09-11 19:25:51,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 19:25:51,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:51,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:51,997 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:51,999 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-11 19:25:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:52,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-11 19:25:52,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:52,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574156589] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:54,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 97 [2024-09-11 19:25:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411433236] [2024-09-11 19:25:54,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:54,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-11 19:25:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-11 19:25:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-11 19:25:54,822 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 98 states, 98 states have (on average 1.9591836734693877) internal successors, (192), 97 states have internal predecessors, (192), 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 19:25:55,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:55,205 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2024-09-11 19:25:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-11 19:25:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.9591836734693877) internal successors, (192), 97 states have internal predecessors, (192), 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 190 [2024-09-11 19:25:55,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:55,207 INFO L225 Difference]: With dead ends: 337 [2024-09-11 19:25:55,207 INFO L226 Difference]: Without dead ends: 192 [2024-09-11 19:25:55,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 284 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-11 19:25:55,208 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:55,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 391 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:25:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-11 19:25:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-11 19:25:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 191 states have internal predecessors, (193), 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 19:25:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-11 19:25:55,230 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 190 [2024-09-11 19:25:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:55,230 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-11 19:25:55,231 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.9591836734693877) internal successors, (192), 97 states have internal predecessors, (192), 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 19:25:55,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-11 19:25:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-11 19:25:55,231 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:55,231 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1, 1] [2024-09-11 19:25:55,244 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-09-11 19:25:55,432 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:55,432 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:25:55,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1462827124, now seen corresponding path program 92 times [2024-09-11 19:25:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:25:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580284771] [2024-09-11 19:25:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:25:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:25:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:25:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1081 proven. 3244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:25:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580284771] [2024-09-11 19:25:57,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580284771] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:25:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155999950] [2024-09-11 19:25:57,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:25:57,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:25:57,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:25:57,129 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:25:57,130 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-11 19:25:57,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:25:57,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:25:57,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-11 19:25:57,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:25:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1128 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:57,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:25:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1128 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:25:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155999950] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:25:59,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:25:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2024-09-11 19:25:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711056994] [2024-09-11 19:25:59,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:25:59,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 19:25:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:25:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 19:25:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 19:25:59,193 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 53 states, 53 states have (on average 3.6792452830188678) internal successors, (195), 52 states have internal predecessors, (195), 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 19:25:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:25:59,922 INFO L93 Difference]: Finished difference Result 203 states and 204 transitions. [2024-09-11 19:25:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-09-11 19:25:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.6792452830188678) internal successors, (195), 52 states have internal predecessors, (195), 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 191 [2024-09-11 19:25:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:25:59,924 INFO L225 Difference]: With dead ends: 203 [2024-09-11 19:25:59,924 INFO L226 Difference]: Without dead ends: 201 [2024-09-11 19:25:59,925 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 330 SyntacticMatches, 95 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3677, Invalid=6223, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:25:59,925 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:25:59,926 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:25:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-11 19:25:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2024-09-11 19:25:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0103092783505154) internal successors, (196), 194 states have internal predecessors, (196), 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 19:25:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2024-09-11 19:25:59,949 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 191 [2024-09-11 19:25:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:25:59,949 INFO L474 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2024-09-11 19:25:59,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.6792452830188678) internal successors, (195), 52 states have internal predecessors, (195), 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 19:25:59,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:25:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2024-09-11 19:25:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-09-11 19:25:59,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:25:59,950 INFO L216 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1] [2024-09-11 19:25:59,964 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2024-09-11 19:26:00,150 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:00,151 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:00,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1945481147, now seen corresponding path program 93 times [2024-09-11 19:26:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739720122] [2024-09-11 19:26:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739720122] [2024-09-11 19:26:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739720122] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253325625] [2024-09-11 19:26:03,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 19:26:03,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:03,305 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:03,306 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-11 19:26:03,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-11 19:26:03,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:03,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-11 19:26:03,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:03,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:06,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253325625] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:06,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:06,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 99 [2024-09-11 19:26:06,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21216529] [2024-09-11 19:26:06,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:06,189 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-11 19:26:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:06,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-11 19:26:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:26:06,190 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand has 100 states, 100 states have (on average 1.96) internal successors, (196), 99 states have internal predecessors, (196), 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 19:26:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:06,525 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2024-09-11 19:26:06,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-11 19:26:06,525 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.96) internal successors, (196), 99 states have internal predecessors, (196), 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 194 [2024-09-11 19:26:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:06,527 INFO L225 Difference]: With dead ends: 344 [2024-09-11 19:26:06,527 INFO L226 Difference]: Without dead ends: 196 [2024-09-11 19:26:06,527 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 290 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 19:26:06,528 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:06,528 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:26:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-09-11 19:26:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-09-11 19:26:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 195 states have internal predecessors, (197), 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 19:26:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2024-09-11 19:26:06,553 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 194 [2024-09-11 19:26:06,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:06,553 INFO L474 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2024-09-11 19:26:06,554 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.96) internal successors, (196), 99 states have internal predecessors, (196), 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 19:26:06,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2024-09-11 19:26:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-11 19:26:06,555 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:06,555 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1, 1] [2024-09-11 19:26:06,568 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-11 19:26:06,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:06,755 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:06,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1380984304, now seen corresponding path program 94 times [2024-09-11 19:26:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978380138] [2024-09-11 19:26:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1128 proven. 3385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978380138] [2024-09-11 19:26:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978380138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:08,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360540458] [2024-09-11 19:26:08,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 19:26:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:08,517 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:08,517 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-11 19:26:08,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 19:26:08,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:08,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-11 19:26:08,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1176 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:08,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1176 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360540458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:10,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 53 [2024-09-11 19:26:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661655345] [2024-09-11 19:26:10,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:10,650 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-11 19:26:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-11 19:26:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1283, Invalid=1579, Unknown=0, NotChecked=0, Total=2862 [2024-09-11 19:26:10,651 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 54 states, 54 states have (on average 3.685185185185185) internal successors, (199), 53 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 19:26:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:11,445 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2024-09-11 19:26:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-09-11 19:26:11,446 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.685185185185185) internal successors, (199), 53 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) Word has length 195 [2024-09-11 19:26:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:11,447 INFO L225 Difference]: With dead ends: 207 [2024-09-11 19:26:11,447 INFO L226 Difference]: Without dead ends: 205 [2024-09-11 19:26:11,448 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 338 SyntacticMatches, 96 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4939 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3827, Invalid=6475, Unknown=0, NotChecked=0, Total=10302 [2024-09-11 19:26:11,449 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:11,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:26:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-11 19:26:11,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2024-09-11 19:26:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 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 19:26:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-11 19:26:11,473 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 195 [2024-09-11 19:26:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:11,474 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-11 19:26:11,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.685185185185185) internal successors, (199), 53 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 19:26:11,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-11 19:26:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-09-11 19:26:11,474 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:11,475 INFO L216 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 1, 1, 1, 1, 1] [2024-09-11 19:26:11,487 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-09-11 19:26:11,675 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:11,675 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:11,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:11,675 INFO L85 PathProgramCache]: Analyzing trace with hash 593148201, now seen corresponding path program 95 times [2024-09-11 19:26:11,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:11,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176935126] [2024-09-11 19:26:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:11,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176935126] [2024-09-11 19:26:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176935126] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395485618] [2024-09-11 19:26:14,970 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 19:26:14,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:14,972 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:14,973 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-11 19:26:15,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-11 19:26:15,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:15,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-11 19:26:15,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:15,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395485618] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:17,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 101 [2024-09-11 19:26:17,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709061708] [2024-09-11 19:26:17,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:17,979 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-11 19:26:17,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:17,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-11 19:26:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-11 19:26:17,980 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 102 states, 102 states have (on average 1.9607843137254901) internal successors, (200), 101 states have internal predecessors, (200), 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 19:26:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:18,403 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2024-09-11 19:26:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-09-11 19:26:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.9607843137254901) internal successors, (200), 101 states have internal predecessors, (200), 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 198 [2024-09-11 19:26:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:18,405 INFO L225 Difference]: With dead ends: 351 [2024-09-11 19:26:18,405 INFO L226 Difference]: Without dead ends: 200 [2024-09-11 19:26:18,406 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 296 SyntacticMatches, 98 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7533 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-11 19:26:18,406 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:18,406 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 19:26:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-11 19:26:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-11 19:26:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0100502512562815) internal successors, (201), 199 states have internal predecessors, (201), 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 19:26:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-11 19:26:18,431 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 198 [2024-09-11 19:26:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:18,431 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-11 19:26:18,431 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.9607843137254901) internal successors, (200), 101 states have internal predecessors, (200), 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 19:26:18,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-11 19:26:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-09-11 19:26:18,432 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:18,432 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1, 1] [2024-09-11 19:26:18,445 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2024-09-11 19:26:18,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2024-09-11 19:26:18,632 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:18,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2143263372, now seen corresponding path program 96 times [2024-09-11 19:26:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532987330] [2024-09-11 19:26:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:18,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:26:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1176 proven. 3529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:26:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532987330] [2024-09-11 19:26:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532987330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:26:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863067442] [2024-09-11 19:26:20,476 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 19:26:20,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:26:20,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:26:20,477 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 19:26:20,478 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-11 19:26:20,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-09-11 19:26:20,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:26:20,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-11 19:26:20,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:26:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1225 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:21,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:26:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1225 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:26:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863067442] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:26:22,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:26:22,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 54 [2024-09-11 19:26:22,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347673128] [2024-09-11 19:26:22,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:26:22,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-11 19:26:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:26:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-11 19:26:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=1636, Unknown=0, NotChecked=0, Total=2970 [2024-09-11 19:26:22,770 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 54 states have internal predecessors, (203), 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 19:26:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:26:23,600 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2024-09-11 19:26:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-09-11 19:26:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 54 states have internal predecessors, (203), 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 199 [2024-09-11 19:26:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:26:23,602 INFO L225 Difference]: With dead ends: 211 [2024-09-11 19:26:23,602 INFO L226 Difference]: Without dead ends: 209 [2024-09-11 19:26:23,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 345 SyntacticMatches, 98 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5140 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3980, Invalid=6732, Unknown=0, NotChecked=0, Total=10712 [2024-09-11 19:26:23,604 INFO L434 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 19:26:23,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 19:26:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-09-11 19:26:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2024-09-11 19:26:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 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 19:26:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2024-09-11 19:26:23,644 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 199 [2024-09-11 19:26:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:26:23,644 INFO L474 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2024-09-11 19:26:23,645 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.690909090909091) internal successors, (203), 54 states have internal predecessors, (203), 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 19:26:23,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2024-09-11 19:26:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-09-11 19:26:23,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:26:23,646 INFO L216 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 1, 1, 1, 1, 1] [2024-09-11 19:26:23,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2024-09-11 19:26:23,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-09-11 19:26:23,847 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:26:23,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:26:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash -970472635, now seen corresponding path program 97 times [2024-09-11 19:26:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:26:23,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945403238] [2024-09-11 19:26:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:26:23,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:26:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat