./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/up.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --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/up.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 ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --procedureinliner.inline.calls.to.implemented.procedures NEVER --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 [2024-09-12 15:25:42,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 15:25:42,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 15:25:42,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 15:25:42,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 15:25:42,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 15:25:42,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 15:25:42,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 15:25:42,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 15:25:42,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 15:25:42,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 15:25:42,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 15:25:42,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 15:25:42,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 15:25:42,853 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 15:25:42,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 15:25:42,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 15:25:42,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 15:25:42,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 15:25:42,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 15:25:42,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 15:25:42,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 15:25:42,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 15:25:42,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 15:25:42,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 15:25:42,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 15:25:42,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 15:25:42,856 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 15:25:42,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 15:25:42,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 15:25:42,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 15:25:42,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 15:25:42,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 15:25:42,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 15:25:42,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 15:25:42,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 15:25:42,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 15:25:43,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 15:25:43,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 15:25:43,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 15:25:43,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 15:25:43,118 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 15:25:43,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/up.i [2024-09-12 15:25:44,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 15:25:44,580 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 15:25:44,580 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i [2024-09-12 15:25:44,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3bcf0d48f/53fb393140f54e13ad403124bd7dc132/FLAG3f4694ae3 [2024-09-12 15:25:44,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3bcf0d48f/53fb393140f54e13ad403124bd7dc132 [2024-09-12 15:25:44,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 15:25:44,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 15:25:44,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 15:25:44,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 15:25:44,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 15:25:44,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170c039d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44, skipping insertion in model container [2024-09-12 15:25:44,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 15:25:44,748 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/up.i[893,906] [2024-09-12 15:25:44,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 15:25:44,770 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 15:25:44,793 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/up.i[893,906] [2024-09-12 15:25:44,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 15:25:44,809 INFO L204 MainTranslator]: Completed translation [2024-09-12 15:25:44,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44 WrapperNode [2024-09-12 15:25:44,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 15:25:44,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 15:25:44,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 15:25:44,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 15:25:44,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,826 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 15:25:44,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 15:25:44,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 15:25:44,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 15:25:44,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 15:25:44,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,844 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 15:25:44,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 15:25:44,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 15:25:44,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 15:25:44,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 15:25:44,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (1/1) ... [2024-09-12 15:25:44,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 15:25:44,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:44,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 15:25:44,892 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 15:25:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 15:25:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 15:25:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 15:25:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 15:25:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 15:25:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 15:25:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 15:25:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 15:25:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 15:25:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 15:25:44,981 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 15:25:44,982 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 15:25:45,089 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-12 15:25:45,090 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 15:25:45,110 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 15:25:45,112 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 15:25:45,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 03:25:45 BoogieIcfgContainer [2024-09-12 15:25:45,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 15:25:45,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 15:25:45,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 15:25:45,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 15:25:45,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 03:25:44" (1/3) ... [2024-09-12 15:25:45,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ed6854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 03:25:45, skipping insertion in model container [2024-09-12 15:25:45,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 03:25:44" (2/3) ... [2024-09-12 15:25:45,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ed6854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 03:25:45, skipping insertion in model container [2024-09-12 15:25:45,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 03:25:45" (3/3) ... [2024-09-12 15:25:45,119 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2024-09-12 15:25:45,132 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 15:25:45,132 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 15:25:45,172 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 15:25:45,179 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;@5ee83ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 15:25:45,179 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 15:25:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 15:25:45,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:45,188 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:45,189 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:45,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2044494321, now seen corresponding path program 1 times [2024-09-12 15:25:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:45,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114676223] [2024-09-12 15:25:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:45,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114676223] [2024-09-12 15:25:45,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114676223] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:25:45,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 15:25:45,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 15:25:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971761912] [2024-09-12 15:25:45,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:25:45,326 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 15:25:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 15:25:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 15:25:45,347 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:45,371 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-12 15:25:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 15:25:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 15:25:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:45,378 INFO L225 Difference]: With dead ends: 34 [2024-09-12 15:25:45,378 INFO L226 Difference]: Without dead ends: 16 [2024-09-12 15:25:45,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 15:25:45,384 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:45,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-12 15:25:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-12 15:25:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-12 15:25:45,414 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-12 15:25:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:45,414 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-12 15:25:45,415 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:45,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-12 15:25:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 15:25:45,417 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:45,417 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:45,417 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 15:25:45,418 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1299541749, now seen corresponding path program 1 times [2024-09-12 15:25:45,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:45,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934892101] [2024-09-12 15:25:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:45,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934892101] [2024-09-12 15:25:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934892101] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:25:45,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 15:25:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 15:25:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588109139] [2024-09-12 15:25:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:25:45,563 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 15:25:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 15:25:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 15:25:45,564 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:45,592 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-12 15:25:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 15:25:45,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 15:25:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:45,595 INFO L225 Difference]: With dead ends: 28 [2024-09-12 15:25:45,595 INFO L226 Difference]: Without dead ends: 17 [2024-09-12 15:25:45,596 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 15:25:45,597 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:45,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-12 15:25:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-12 15:25:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-12 15:25:45,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-12 15:25:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:45,603 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-12 15:25:45,603 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:45,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-12 15:25:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 15:25:45,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:45,605 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:45,606 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 15:25:45,606 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:45,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash 546941463, now seen corresponding path program 1 times [2024-09-12 15:25:45,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:45,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752519206] [2024-09-12 15:25:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:45,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752519206] [2024-09-12 15:25:45,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752519206] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:45,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680018630] [2024-09-12 15:25:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:45,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:45,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:45,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:45,756 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 15:25:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:45,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 15:25:45,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:45,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 15:25:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680018630] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 15:25:45,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 15:25:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-12 15:25:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600212156] [2024-09-12 15:25:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 15:25:45,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 15:25:45,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 15:25:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 15:25:45,872 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:45,931 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-12 15:25:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 15:25:45,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 15:25:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:45,935 INFO L225 Difference]: With dead ends: 29 [2024-09-12 15:25:45,935 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 15:25:45,935 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-12 15:25:45,937 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:45,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 15:25:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-12 15:25:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-12 15:25:45,949 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-12 15:25:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:45,949 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-12 15:25:45,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 15:25:45,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-12 15:25:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 15:25:45,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:45,950 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:45,964 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 15:25:46,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:46,151 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:46,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash 51481388, now seen corresponding path program 1 times [2024-09-12 15:25:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608001495] [2024-09-12 15:25:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-12 15:25:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:46,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608001495] [2024-09-12 15:25:46,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608001495] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151096170] [2024-09-12 15:25:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:46,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:46,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:46,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:46,243 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 15:25:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 15:25:46,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:46,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:46,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151096170] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:46,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:46,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-12 15:25:46,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088874759] [2024-09-12 15:25:46,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:46,375 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 15:25:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 15:25:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-12 15:25:46,376 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:46,404 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-12 15:25:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 15:25:46,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2024-09-12 15:25:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:46,407 INFO L225 Difference]: With dead ends: 38 [2024-09-12 15:25:46,407 INFO L226 Difference]: Without dead ends: 24 [2024-09-12 15:25:46,408 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-12 15:25:46,409 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 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 [2024-09-12 15:25:46,409 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-12 15:25:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-12 15:25:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-12 15:25:46,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-12 15:25:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:46,414 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-12 15:25:46,414 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:46,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-12 15:25:46,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 15:25:46,415 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:46,415 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:46,427 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 15:25:46,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:46,620 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:46,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:46,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1809000392, now seen corresponding path program 2 times [2024-09-12 15:25:46,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:46,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594613446] [2024-09-12 15:25:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:46,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 15:25:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594613446] [2024-09-12 15:25:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594613446] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842349766] [2024-09-12 15:25:46,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:46,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:46,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:46,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:46,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 15:25:46,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:46,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:46,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 15:25:46,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:46,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 15:25:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842349766] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:46,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-12 15:25:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474385917] [2024-09-12 15:25:46,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:46,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 15:25:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 15:25:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 15:25:46,857 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:46,906 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-12 15:25:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 15:25:46,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-12 15:25:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:46,907 INFO L225 Difference]: With dead ends: 37 [2024-09-12 15:25:46,907 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 15:25:46,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-12 15:25:46,908 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:46,909 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 15:25:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-12 15:25:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:46,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-12 15:25:46,913 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-12 15:25:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:46,914 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-12 15:25:46,914 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 15:25:46,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-12 15:25:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 15:25:46,915 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:46,915 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:46,927 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:47,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:47,116 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:47,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -835361301, now seen corresponding path program 3 times [2024-09-12 15:25:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740716179] [2024-09-12 15:25:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 15:25:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 15:25:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740716179] [2024-09-12 15:25:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740716179] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3529556] [2024-09-12 15:25:47,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:47,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:47,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:47,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:47,199 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 15:25:47,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 15:25:47,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:47,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 15:25:47,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:47,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3529556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:47,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:47,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-09-12 15:25:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757303714] [2024-09-12 15:25:47,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:47,360 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 15:25:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:47,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 15:25:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:47,361 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:47,415 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-12 15:25:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 15:25:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2024-09-12 15:25:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:47,416 INFO L225 Difference]: With dead ends: 49 [2024-09-12 15:25:47,416 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 15:25:47,416 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:47,417 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:47,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 15:25:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-12 15:25:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-12 15:25:47,425 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-12 15:25:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:47,425 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-12 15:25:47,425 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:47,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-12 15:25:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 15:25:47,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:47,427 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:47,440 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:47,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:47,628 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:47,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1662458121, now seen corresponding path program 4 times [2024-09-12 15:25:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313634011] [2024-09-12 15:25:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:47,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 15:25:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:47,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:47,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313634011] [2024-09-12 15:25:47,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313634011] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:47,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514033798] [2024-09-12 15:25:47,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:47,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:47,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:47,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:47,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 15:25:47,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:47,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:47,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 15:25:47,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:47,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 15:25:47,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514033798] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:47,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-12 15:25:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464702013] [2024-09-12 15:25:47,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:47,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 15:25:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 15:25:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-12 15:25:47,878 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:47,918 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-12 15:25:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 15:25:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-12 15:25:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:47,919 INFO L225 Difference]: With dead ends: 45 [2024-09-12 15:25:47,919 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 15:25:47,919 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-12 15:25:47,920 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:47,920 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 15:25:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-12 15:25:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-12 15:25:47,927 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-12 15:25:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:47,927 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-12 15:25:47,927 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 15:25:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-12 15:25:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 15:25:47,928 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:47,928 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:47,940 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 15:25:48,132 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 15:25:48,133 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:48,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1955720628, now seen corresponding path program 5 times [2024-09-12 15:25:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955081317] [2024-09-12 15:25:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 15:25:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:48,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:48,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955081317] [2024-09-12 15:25:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955081317] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:48,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31486272] [2024-09-12 15:25:48,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:48,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:48,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:48,260 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 15:25:48,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 15:25:48,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:48,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 15:25:48,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:48,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31486272] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:48,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-09-12 15:25:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800606081] [2024-09-12 15:25:48,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:48,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 15:25:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 15:25:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:25:48,501 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:48,557 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-12 15:25:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 15:25:48,557 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2024-09-12 15:25:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:48,558 INFO L225 Difference]: With dead ends: 60 [2024-09-12 15:25:48,558 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 15:25:48,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:25:48,559 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:48,559 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 15:25:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-12 15:25:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-12 15:25:48,564 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-12 15:25:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:48,564 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-12 15:25:48,564 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:48,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-12 15:25:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 15:25:48,565 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:48,565 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:48,577 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 15:25:48,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:48,767 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:48,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1715849048, now seen corresponding path program 6 times [2024-09-12 15:25:48,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:48,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865648113] [2024-09-12 15:25:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:48,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 15:25:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865648113] [2024-09-12 15:25:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865648113] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549241827] [2024-09-12 15:25:48,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:48,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:48,862 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 15:25:48,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-12 15:25:48,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:48,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 15:25:48,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:48,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 15:25:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549241827] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:49,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-12 15:25:49,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137929700] [2024-09-12 15:25:49,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:49,023 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 15:25:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 15:25:49,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-12 15:25:49,024 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:49,085 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-12 15:25:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 15:25:49,086 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-12 15:25:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:49,087 INFO L225 Difference]: With dead ends: 53 [2024-09-12 15:25:49,087 INFO L226 Difference]: Without dead ends: 51 [2024-09-12 15:25:49,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-12 15:25:49,088 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:49,088 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-12 15:25:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-12 15:25:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-12 15:25:49,094 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-12 15:25:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:49,094 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-12 15:25:49,094 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 15:25:49,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-12 15:25:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 15:25:49,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:49,095 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:49,107 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:49,299 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:49,300 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:49,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 640103115, now seen corresponding path program 7 times [2024-09-12 15:25:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:49,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504352503] [2024-09-12 15:25:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 15:25:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504352503] [2024-09-12 15:25:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504352503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212561784] [2024-09-12 15:25:49,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:49,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:49,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:49,420 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 15:25:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:49,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 15:25:49,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:49,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212561784] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:49,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:49,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-09-12 15:25:49,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600158261] [2024-09-12 15:25:49,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:49,656 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 15:25:49,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:49,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 15:25:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:49,657 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:49,717 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-12 15:25:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 15:25:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 44 [2024-09-12 15:25:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:49,718 INFO L225 Difference]: With dead ends: 71 [2024-09-12 15:25:49,718 INFO L226 Difference]: Without dead ends: 48 [2024-09-12 15:25:49,719 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:49,719 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:49,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-12 15:25:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-12 15:25:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-12 15:25:49,729 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-12 15:25:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:49,730 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-12 15:25:49,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:49,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-12 15:25:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 15:25:49,732 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:49,732 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:49,748 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 15:25:49,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:49,934 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:49,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1884349481, now seen corresponding path program 8 times [2024-09-12 15:25:49,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:49,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938896493] [2024-09-12 15:25:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:49,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:25:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:25:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:50,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938896493] [2024-09-12 15:25:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938896493] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436125676] [2024-09-12 15:25:50,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:50,034 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:50,035 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 15:25:50,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:50,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:50,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 15:25:50,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:50,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 15:25:50,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436125676] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:50,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:50,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-12 15:25:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597345752] [2024-09-12 15:25:50,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:50,207 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 15:25:50,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 15:25:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-12 15:25:50,208 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:50,258 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-12 15:25:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 15:25:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-12 15:25:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:50,259 INFO L225 Difference]: With dead ends: 61 [2024-09-12 15:25:50,259 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 15:25:50,259 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:50,260 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:50,260 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 15:25:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-12 15:25:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:50,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-12 15:25:50,269 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-12 15:25:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:50,269 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-12 15:25:50,269 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 15:25:50,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-12 15:25:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 15:25:50,270 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:50,270 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:50,283 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 15:25:50,470 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 15:25:50,471 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:50,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:50,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1341349524, now seen corresponding path program 9 times [2024-09-12 15:25:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78375113] [2024-09-12 15:25:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 15:25:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:25:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:25:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:25:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:25:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78375113] [2024-09-12 15:25:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78375113] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725055421] [2024-09-12 15:25:50,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:50,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:50,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:50,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:50,620 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 15:25:50,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 15:25:50,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:50,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 15:25:50,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:50,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725055421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:50,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-09-12 15:25:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342086841] [2024-09-12 15:25:50,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:50,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 15:25:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:50,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 15:25:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-12 15:25:50,904 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:50,965 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-12 15:25:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 15:25:50,965 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 52 [2024-09-12 15:25:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:50,966 INFO L225 Difference]: With dead ends: 82 [2024-09-12 15:25:50,966 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 15:25:50,966 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-12 15:25:50,967 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:50,967 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 15:25:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-12 15:25:50,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-12 15:25:50,974 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-12 15:25:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:50,974 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-12 15:25:50,974 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:50,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-12 15:25:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 15:25:50,979 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:50,979 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:50,991 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 15:25:51,180 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 15:25:51,180 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash -556745096, now seen corresponding path program 10 times [2024-09-12 15:25:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388135120] [2024-09-12 15:25:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 15:25:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:25:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:51,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388135120] [2024-09-12 15:25:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388135120] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110972297] [2024-09-12 15:25:51,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:51,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:51,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:51,303 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:51,304 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 15:25:51,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:51,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:51,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 15:25:51,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:51,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 15:25:51,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110972297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:51,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:51,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-12 15:25:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789932505] [2024-09-12 15:25:51,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:51,495 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 15:25:51,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 15:25:51,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 15:25:51,496 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:51,554 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-12 15:25:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 15:25:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-12 15:25:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:51,555 INFO L225 Difference]: With dead ends: 69 [2024-09-12 15:25:51,555 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 15:25:51,556 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-12 15:25:51,557 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:51,557 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 15:25:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-12 15:25:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-12 15:25:51,564 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-12 15:25:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:51,564 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-12 15:25:51,564 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 15:25:51,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-12 15:25:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 15:25:51,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:51,570 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:51,583 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 15:25:51,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:51,775 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:51,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash 483260331, now seen corresponding path program 11 times [2024-09-12 15:25:51,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:51,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020768937] [2024-09-12 15:25:51,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:51,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 15:25:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:25:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:25:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:25:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:25:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:25:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020768937] [2024-09-12 15:25:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020768937] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077099740] [2024-09-12 15:25:51,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:51,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:51,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:51,955 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:51,956 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 15:25:51,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-12 15:25:51,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:51,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 15:25:51,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:52,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077099740] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:52,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-09-12 15:25:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681723568] [2024-09-12 15:25:52,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:52,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 15:25:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 15:25:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:25:52,271 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:52,343 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-12 15:25:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 15:25:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 60 [2024-09-12 15:25:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:52,345 INFO L225 Difference]: With dead ends: 93 [2024-09-12 15:25:52,345 INFO L226 Difference]: Without dead ends: 64 [2024-09-12 15:25:52,345 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 113 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:25:52,345 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:52,346 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-12 15:25:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-12 15:25:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-12 15:25:52,351 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-12 15:25:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:52,351 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-12 15:25:52,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:25:52,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-12 15:25:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 15:25:52,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:52,353 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:52,364 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 15:25:52,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 15:25:52,553 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -77969225, now seen corresponding path program 12 times [2024-09-12 15:25:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739865235] [2024-09-12 15:25:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 15:25:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:25:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:52,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:52,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739865235] [2024-09-12 15:25:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739865235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:52,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614676596] [2024-09-12 15:25:52,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:52,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:52,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:52,693 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:52,694 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 15:25:52,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 15:25:52,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:52,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 15:25:52,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:52,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 15:25:52,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614676596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:52,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-12 15:25:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292461743] [2024-09-12 15:25:52,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:52,884 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 15:25:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:52,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 15:25:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-12 15:25:52,885 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:52,949 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-12 15:25:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 15:25:52,950 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-12 15:25:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:52,950 INFO L225 Difference]: With dead ends: 77 [2024-09-12 15:25:52,950 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 15:25:52,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-12 15:25:52,951 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:52,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:52,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 15:25:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-12 15:25:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-12 15:25:52,965 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-12 15:25:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:52,965 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-12 15:25:52,965 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 15:25:52,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-12 15:25:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 15:25:52,966 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:52,966 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:52,981 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:53,166 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 15:25:53,166 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:53,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1992243340, now seen corresponding path program 13 times [2024-09-12 15:25:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:53,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934471418] [2024-09-12 15:25:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 15:25:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:25:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:25:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:25:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:25:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:25:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:25:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:53,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934471418] [2024-09-12 15:25:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934471418] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751234532] [2024-09-12 15:25:53,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:53,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:53,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:53,357 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 15:25:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:53,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 15:25:53,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:53,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:53,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751234532] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:53,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:53,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-09-12 15:25:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827779868] [2024-09-12 15:25:53,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:53,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 15:25:53,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 15:25:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-09-12 15:25:53,721 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:53,813 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-12 15:25:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 15:25:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 68 [2024-09-12 15:25:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:53,814 INFO L225 Difference]: With dead ends: 104 [2024-09-12 15:25:53,814 INFO L226 Difference]: Without dead ends: 72 [2024-09-12 15:25:53,815 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-09-12 15:25:53,815 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:53,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-12 15:25:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-12 15:25:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-12 15:25:53,827 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-12 15:25:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:53,828 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-12 15:25:53,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:25:53,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-12 15:25:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 15:25:53,829 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:53,829 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:53,841 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:54,033 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 15:25:54,034 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:54,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1549812328, now seen corresponding path program 14 times [2024-09-12 15:25:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248035246] [2024-09-12 15:25:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 15:25:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:25:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248035246] [2024-09-12 15:25:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248035246] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053075720] [2024-09-12 15:25:54,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:54,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:54,218 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:54,219 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 15:25:54,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:54,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:54,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 15:25:54,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:54,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 15:25:54,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053075720] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:54,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:54,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-12 15:25:54,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83690348] [2024-09-12 15:25:54,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:54,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 15:25:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 15:25:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-12 15:25:54,444 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:54,505 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-12 15:25:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 15:25:54,505 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-12 15:25:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:54,506 INFO L225 Difference]: With dead ends: 85 [2024-09-12 15:25:54,506 INFO L226 Difference]: Without dead ends: 83 [2024-09-12 15:25:54,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:25:54,507 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:54,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-12 15:25:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-12 15:25:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:54,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-12 15:25:54,514 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-12 15:25:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:54,514 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-12 15:25:54,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 15:25:54,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-12 15:25:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-12 15:25:54,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:54,515 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:54,528 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:54,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 15:25:54,716 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:54,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1008186507, now seen corresponding path program 15 times [2024-09-12 15:25:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:54,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340741556] [2024-09-12 15:25:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:54,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 15:25:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:25:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:25:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:25:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:25:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:25:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:25:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:25:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340741556] [2024-09-12 15:25:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340741556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5183779] [2024-09-12 15:25:54,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:25:54,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:54,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:54,931 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 15:25:54,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-12 15:25:54,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:54,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 15:25:54,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:55,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5183779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:55,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-09-12 15:25:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304647681] [2024-09-12 15:25:55,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:55,327 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 15:25:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 15:25:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:25:55,328 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:55,420 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-12 15:25:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 15:25:55,421 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 76 [2024-09-12 15:25:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:55,422 INFO L225 Difference]: With dead ends: 115 [2024-09-12 15:25:55,422 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 15:25:55,422 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:25:55,423 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:55,423 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 15:25:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-12 15:25:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-12 15:25:55,427 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-12 15:25:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:55,428 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-12 15:25:55,428 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:25:55,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-12 15:25:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 15:25:55,429 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:55,429 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:55,441 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:55,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:55,633 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:55,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 165178775, now seen corresponding path program 16 times [2024-09-12 15:25:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22914282] [2024-09-12 15:25:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 15:25:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:25:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:55,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22914282] [2024-09-12 15:25:55,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22914282] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255369610] [2024-09-12 15:25:55,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:25:55,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:55,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:55,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:55,786 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 15:25:55,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:25:55,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:55,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 15:25:55,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:55,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 15:25:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255369610] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:56,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-12 15:25:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129708470] [2024-09-12 15:25:56,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:56,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 15:25:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:56,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 15:25:56,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-12 15:25:56,018 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:56,075 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-12 15:25:56,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 15:25:56,075 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-12 15:25:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:56,076 INFO L225 Difference]: With dead ends: 93 [2024-09-12 15:25:56,076 INFO L226 Difference]: Without dead ends: 91 [2024-09-12 15:25:56,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-12 15:25:56,076 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:56,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 15:25:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-12 15:25:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-12 15:25:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-12 15:25:56,082 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-12 15:25:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:56,082 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-12 15:25:56,082 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 15:25:56,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-12 15:25:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 15:25:56,083 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:56,083 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:56,095 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:56,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:56,284 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:56,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:56,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1305991084, now seen corresponding path program 17 times [2024-09-12 15:25:56,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:56,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645856508] [2024-09-12 15:25:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 15:25:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:25:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:25:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:25:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:25:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:25:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:25:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:25:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:25:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645856508] [2024-09-12 15:25:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645856508] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49412237] [2024-09-12 15:25:56,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:25:56,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:56,524 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:56,525 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 15:25:56,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-12 15:25:56,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:56,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 15:25:56,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:56,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:56,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49412237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:56,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:56,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-09-12 15:25:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144044235] [2024-09-12 15:25:56,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:56,980 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 15:25:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 15:25:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:25:56,981 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:57,073 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-12 15:25:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 15:25:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 84 [2024-09-12 15:25:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:57,074 INFO L225 Difference]: With dead ends: 126 [2024-09-12 15:25:57,074 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 15:25:57,075 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 158 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:25:57,075 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:57,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 15:25:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 15:25:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-12 15:25:57,080 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-12 15:25:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:57,080 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-12 15:25:57,081 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:25:57,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:57,081 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-12 15:25:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 15:25:57,081 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:57,082 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:57,094 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:57,282 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:57,282 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:57,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1023097672, now seen corresponding path program 18 times [2024-09-12 15:25:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394137964] [2024-09-12 15:25:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:57,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394137964] [2024-09-12 15:25:57,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394137964] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:57,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847250445] [2024-09-12 15:25:57,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:25:57,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:57,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:57,473 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:57,474 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 15:25:57,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-12 15:25:57,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:57,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 15:25:57,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:57,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 15:25:57,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847250445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:57,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:57,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-12 15:25:57,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646008921] [2024-09-12 15:25:57,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:57,740 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 15:25:57,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 15:25:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-12 15:25:57,741 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:57,804 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-12 15:25:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 15:25:57,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-12 15:25:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:57,806 INFO L225 Difference]: With dead ends: 101 [2024-09-12 15:25:57,806 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 15:25:57,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-12 15:25:57,806 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:57,806 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 15:25:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-12 15:25:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-12 15:25:57,812 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-12 15:25:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:57,812 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-12 15:25:57,812 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 15:25:57,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-12 15:25:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 15:25:57,813 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:57,813 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:57,825 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 15:25:58,016 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 15:25:58,017 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:58,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash 359819627, now seen corresponding path program 19 times [2024-09-12 15:25:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234853904] [2024-09-12 15:25:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 15:25:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:25:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:25:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:25:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:25:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:25:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:25:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:25:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:25:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:25:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234853904] [2024-09-12 15:25:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234853904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992252793] [2024-09-12 15:25:58,256 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:25:58,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:58,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:58,258 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:58,259 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 15:25:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:58,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 15:25:58,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:58,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992252793] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:58,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-09-12 15:25:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130515381] [2024-09-12 15:25:58,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:58,761 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 15:25:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 15:25:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:25:58,762 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:58,896 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-12 15:25:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 15:25:58,897 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 92 [2024-09-12 15:25:58,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:58,897 INFO L225 Difference]: With dead ends: 137 [2024-09-12 15:25:58,897 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 15:25:58,898 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 173 SyntacticMatches, 21 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:25:58,898 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:58,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 15:25:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-12 15:25:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:25:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-12 15:25:58,909 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-12 15:25:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:58,909 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-12 15:25:58,909 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:25:58,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-12 15:25:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 15:25:58,910 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:58,910 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:58,923 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:59,111 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 15:25:59,111 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:59,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash -325612937, now seen corresponding path program 20 times [2024-09-12 15:25:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:59,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749599350] [2024-09-12 15:25:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:25:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:25:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:25:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:25:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:25:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:25:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:25:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:25:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:25:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:25:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:25:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:25:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:59,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:25:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749599350] [2024-09-12 15:25:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749599350] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:25:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893453659] [2024-09-12 15:25:59,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:25:59,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:59,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:25:59,330 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:25:59,331 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 15:25:59,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:25:59,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:25:59,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 15:25:59,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:25:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:59,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:25:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 15:25:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893453659] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:25:59,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:25:59,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-12 15:25:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201233256] [2024-09-12 15:25:59,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:25:59,636 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 15:25:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:25:59,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 15:25:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-12 15:25:59,637 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:25:59,719 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-12 15:25:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 15:25:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-12 15:25:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:25:59,721 INFO L225 Difference]: With dead ends: 109 [2024-09-12 15:25:59,721 INFO L226 Difference]: Without dead ends: 107 [2024-09-12 15:25:59,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:25:59,721 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:25:59,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:25:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-12 15:25:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-12 15:25:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:25:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-12 15:25:59,727 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-12 15:25:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:25:59,728 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-12 15:25:59,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 15:25:59,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-12 15:25:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-12 15:25:59,728 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:25:59,729 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:25:59,743 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 15:25:59,932 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:25:59,933 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:25:59,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:25:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash 740851404, now seen corresponding path program 21 times [2024-09-12 15:25:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:25:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103215735] [2024-09-12 15:25:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:25:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:25:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 15:26:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:26:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:26:00,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:00,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103215735] [2024-09-12 15:26:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103215735] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062516464] [2024-09-12 15:26:00,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:00,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:00,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:00,270 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:00,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 15:26:00,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-12 15:26:00,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:00,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 15:26:00,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:26:00,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:26:00,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062516464] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:00,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:00,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-09-12 15:26:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654621638] [2024-09-12 15:26:00,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:00,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 15:26:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 15:26:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 15:26:00,872 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:26:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:00,999 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-12 15:26:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 15:26:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 100 [2024-09-12 15:26:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:01,000 INFO L225 Difference]: With dead ends: 148 [2024-09-12 15:26:01,001 INFO L226 Difference]: Without dead ends: 104 [2024-09-12 15:26:01,001 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 15:26:01,001 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:01,002 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-12 15:26:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-12 15:26:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:26:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-12 15:26:01,009 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-12 15:26:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:01,009 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-12 15:26:01,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:26:01,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-12 15:26:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-12 15:26:01,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:01,010 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:01,023 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:01,214 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 15:26:01,215 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:01,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash -741223464, now seen corresponding path program 22 times [2024-09-12 15:26:01,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:01,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241463303] [2024-09-12 15:26:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:26:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:26:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:26:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241463303] [2024-09-12 15:26:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241463303] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867090448] [2024-09-12 15:26:01,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:01,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:01,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:01,432 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:01,433 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 15:26:01,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:01,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:01,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 15:26:01,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:26:01,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 15:26:01,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867090448] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:01,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:01,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-12 15:26:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690510643] [2024-09-12 15:26:01,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:01,721 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 15:26:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 15:26:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-12 15:26:01,722 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:26:01,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:01,802 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-12 15:26:01,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 15:26:01,803 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-12 15:26:01,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:01,804 INFO L225 Difference]: With dead ends: 117 [2024-09-12 15:26:01,804 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 15:26:01,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-12 15:26:01,804 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:01,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 80 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 15:26:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-12 15:26:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:26:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-12 15:26:01,810 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-12 15:26:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:01,810 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-12 15:26:01,811 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 15:26:01,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-12 15:26:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 15:26:01,811 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:01,811 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:01,827 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:02,012 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 15:26:02,012 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:02,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash 567023179, now seen corresponding path program 23 times [2024-09-12 15:26:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570069015] [2024-09-12 15:26:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:02,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 15:26:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:26:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:26:02,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:02,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570069015] [2024-09-12 15:26:02,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570069015] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:02,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609519738] [2024-09-12 15:26:02,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:02,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:02,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:02,367 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:02,368 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 15:26:02,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 15:26:02,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:02,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 15:26:02,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:26:02,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:26:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609519738] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:03,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:03,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-09-12 15:26:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528299551] [2024-09-12 15:26:03,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:03,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 15:26:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 15:26:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:26:03,036 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:03,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:03,164 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-12 15:26:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 15:26:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 108 [2024-09-12 15:26:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:03,165 INFO L225 Difference]: With dead ends: 159 [2024-09-12 15:26:03,165 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 15:26:03,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 203 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:26:03,166 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:03,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 15:26:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-12 15:26:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:26:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-12 15:26:03,175 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-12 15:26:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:03,175 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-12 15:26:03,175 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:03,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-12 15:26:03,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-12 15:26:03,176 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:03,176 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:03,189 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:03,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 15:26:03,380 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:03,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:03,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1132093609, now seen corresponding path program 24 times [2024-09-12 15:26:03,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:03,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117441828] [2024-09-12 15:26:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:26:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:26:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:26:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117441828] [2024-09-12 15:26:03,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117441828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988052627] [2024-09-12 15:26:03,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:03,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:03,622 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:03,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 15:26:03,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 15:26:03,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:03,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 15:26:03,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:26:03,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 15:26:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988052627] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:03,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:03,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-12 15:26:03,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902639111] [2024-09-12 15:26:03,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:03,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 15:26:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 15:26:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-12 15:26:03,933 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:26:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:04,031 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-12 15:26:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 15:26:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-12 15:26:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:04,032 INFO L225 Difference]: With dead ends: 125 [2024-09-12 15:26:04,032 INFO L226 Difference]: Without dead ends: 123 [2024-09-12 15:26:04,033 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-12 15:26:04,033 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:04,033 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-12 15:26:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-12 15:26:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:26:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-12 15:26:04,040 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-12 15:26:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:04,040 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-12 15:26:04,040 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 15:26:04,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-12 15:26:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-12 15:26:04,041 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:04,041 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:04,053 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:04,241 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 15:26:04,242 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:04,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1325191700, now seen corresponding path program 25 times [2024-09-12 15:26:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:04,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406453603] [2024-09-12 15:26:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:04,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 15:26:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:26:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:26:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406453603] [2024-09-12 15:26:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406453603] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373485201] [2024-09-12 15:26:04,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:04,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:04,609 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:04,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 15:26:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:04,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 15:26:04,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:26:05,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:26:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373485201] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:05,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-09-12 15:26:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680939314] [2024-09-12 15:26:05,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:05,288 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 15:26:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 15:26:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 15:26:05,290 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:05,418 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-12 15:26:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 15:26:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 116 [2024-09-12 15:26:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:05,420 INFO L225 Difference]: With dead ends: 170 [2024-09-12 15:26:05,420 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 15:26:05,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 218 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 15:26:05,421 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:05,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 15:26:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-12 15:26:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:26:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-12 15:26:05,427 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-12 15:26:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:05,427 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-12 15:26:05,427 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:05,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-12 15:26:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-12 15:26:05,428 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:05,428 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:05,440 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 15:26:05,632 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:05,632 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:05,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash 358148856, now seen corresponding path program 26 times [2024-09-12 15:26:05,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:05,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925596373] [2024-09-12 15:26:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:26:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:26:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:26:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:05,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925596373] [2024-09-12 15:26:05,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925596373] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:05,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70043527] [2024-09-12 15:26:05,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:05,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:05,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:05,884 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:05,886 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 15:26:05,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:05,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:05,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 15:26:05,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:26:06,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 15:26:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70043527] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:06,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:06,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-12 15:26:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059568051] [2024-09-12 15:26:06,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:06,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 15:26:06,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 15:26:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-12 15:26:06,206 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:26:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:06,275 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-12 15:26:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 15:26:06,276 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-12 15:26:06,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:06,277 INFO L225 Difference]: With dead ends: 133 [2024-09-12 15:26:06,277 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 15:26:06,277 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-12 15:26:06,277 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:06,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 15:26:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-12 15:26:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:26:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-12 15:26:06,288 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-12 15:26:06,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:06,288 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-12 15:26:06,288 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 15:26:06,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-12 15:26:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-12 15:26:06,289 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:06,290 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:06,301 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:06,493 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 15:26:06,494 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:06,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1584219349, now seen corresponding path program 27 times [2024-09-12 15:26:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:06,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133750248] [2024-09-12 15:26:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:06,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 15:26:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:26:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:26:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:06,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133750248] [2024-09-12 15:26:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133750248] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:06,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021161812] [2024-09-12 15:26:06,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:06,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:06,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:06,881 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:06,882 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 15:26:06,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 15:26:06,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:06,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 15:26:06,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:26:07,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:26:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021161812] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:07,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-09-12 15:26:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491952130] [2024-09-12 15:26:07,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:07,591 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 15:26:07,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:07,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 15:26:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:26:07,592 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:07,762 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-12 15:26:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 15:26:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 124 [2024-09-12 15:26:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:07,763 INFO L225 Difference]: With dead ends: 181 [2024-09-12 15:26:07,763 INFO L226 Difference]: Without dead ends: 128 [2024-09-12 15:26:07,764 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 233 SyntacticMatches, 29 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:26:07,764 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:07,764 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:07,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-12 15:26:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-12 15:26:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:26:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-12 15:26:07,772 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-12 15:26:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:07,772 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-12 15:26:07,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-12 15:26:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-12 15:26:07,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:07,773 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:07,784 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-12 15:26:07,973 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:07,973 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:07,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1511042103, now seen corresponding path program 28 times [2024-09-12 15:26:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:07,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36291927] [2024-09-12 15:26:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:26:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:26:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:26:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:26:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:26:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:26:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:26:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:26:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:26:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:26:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:26:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:26:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:26:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:26:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:26:08,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:08,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36291927] [2024-09-12 15:26:08,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36291927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:08,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505880888] [2024-09-12 15:26:08,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:08,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:08,227 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) [2024-09-12 15:26:08,228 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 15:26:08,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:08,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:08,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 15:26:08,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:26:08,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 15:26:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505880888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:08,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:08,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-12 15:26:08,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713843300] [2024-09-12 15:26:08,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:08,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 15:26:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:08,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 15:26:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-12 15:26:08,579 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:26:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:08,672 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-12 15:26:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 15:26:08,672 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-12 15:26:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:08,673 INFO L225 Difference]: With dead ends: 141 [2024-09-12 15:26:08,673 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 15:26:08,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-12 15:26:08,674 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:08,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 15:26:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-12 15:26:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:26:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-12 15:26:08,682 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-12 15:26:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:08,682 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-12 15:26:08,682 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 15:26:08,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-12 15:26:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-12 15:26:08,684 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:08,684 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:08,697 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-12 15:26:08,885 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:08,885 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:08,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1144644876, now seen corresponding path program 29 times [2024-09-12 15:26:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:08,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100526438] [2024-09-12 15:26:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 15:26:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:26:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:26:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:26:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:26:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:26:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:26:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:26:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:26:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:26:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:26:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:26:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:26:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:26:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:26:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:26:09,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:09,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100526438] [2024-09-12 15:26:09,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100526438] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:09,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897181206] [2024-09-12 15:26:09,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:09,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:09,286 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) [2024-09-12 15:26:09,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 15:26:09,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 15:26:09,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:09,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 15:26:09,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:26:09,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:26:10,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897181206] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:10,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-09-12 15:26:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317140182] [2024-09-12 15:26:10,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:10,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 15:26:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:10,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 15:26:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 15:26:10,046 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:10,233 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-12 15:26:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 15:26:10,234 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 132 [2024-09-12 15:26:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:10,235 INFO L225 Difference]: With dead ends: 192 [2024-09-12 15:26:10,235 INFO L226 Difference]: Without dead ends: 136 [2024-09-12 15:26:10,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 248 SyntacticMatches, 31 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 15:26:10,238 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:10,238 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-12 15:26:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-12 15:26:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:26:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-12 15:26:10,252 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-12 15:26:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:10,252 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-12 15:26:10,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:26:10,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-12 15:26:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-12 15:26:10,254 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:10,254 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:10,267 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:10,455 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 15:26:10,455 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:10,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744936, now seen corresponding path program 30 times [2024-09-12 15:26:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:10,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804320172] [2024-09-12 15:26:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:26:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:26:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:26:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:26:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:26:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:26:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:26:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:26:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:26:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:26:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:26:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:26:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:26:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:26:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:26:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:26:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804320172] [2024-09-12 15:26:10,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804320172] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509874361] [2024-09-12 15:26:10,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:10,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:10,732 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) [2024-09-12 15:26:10,733 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 15:26:10,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-12 15:26:10,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:10,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 15:26:10,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:26:10,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 15:26:11,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509874361] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:11,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:11,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-12 15:26:11,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531923822] [2024-09-12 15:26:11,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:11,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 15:26:11,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:11,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 15:26:11,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-12 15:26:11,101 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:26:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:11,201 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-12 15:26:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 15:26:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-12 15:26:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:11,202 INFO L225 Difference]: With dead ends: 149 [2024-09-12 15:26:11,202 INFO L226 Difference]: Without dead ends: 147 [2024-09-12 15:26:11,202 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-12 15:26:11,202 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:11,203 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-12 15:26:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-12 15:26:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:26:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-12 15:26:11,209 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-12 15:26:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:11,210 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-12 15:26:11,210 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 15:26:11,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-12 15:26:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-12 15:26:11,210 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:11,210 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:11,222 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:11,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:11,411 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:11,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2092193803, now seen corresponding path program 31 times [2024-09-12 15:26:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:11,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782867365] [2024-09-12 15:26:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 15:26:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:26:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:26:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:26:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:26:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:26:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:26:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:26:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:26:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:26:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:26:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:26:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:26:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:26:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:26:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:26:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:26:11,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782867365] [2024-09-12 15:26:11,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782867365] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:11,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209027731] [2024-09-12 15:26:11,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:11,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:11,903 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) [2024-09-12 15:26:11,904 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 15:26:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:11,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 15:26:11,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:26:12,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:26:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209027731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:12,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-09-12 15:26:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940108016] [2024-09-12 15:26:12,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:12,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 15:26:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 15:26:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:26:12,742 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:12,956 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-12 15:26:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 15:26:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 140 [2024-09-12 15:26:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:12,958 INFO L225 Difference]: With dead ends: 203 [2024-09-12 15:26:12,958 INFO L226 Difference]: Without dead ends: 144 [2024-09-12 15:26:12,959 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 263 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:26:12,959 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:12,960 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-12 15:26:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-12 15:26:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:26:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-12 15:26:12,969 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-12 15:26:12,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:12,969 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-12 15:26:12,970 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:26:12,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-12 15:26:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-12 15:26:12,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:12,970 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:12,983 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-12 15:26:13,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 15:26:13,171 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:13,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1294381335, now seen corresponding path program 32 times [2024-09-12 15:26:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047311773] [2024-09-12 15:26:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:26:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:26:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:26:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:26:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:26:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:26:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:26:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:26:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:26:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:26:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:26:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:26:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:26:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:26:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:26:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:26:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:26:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047311773] [2024-09-12 15:26:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047311773] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104446805] [2024-09-12 15:26:13,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:13,454 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) [2024-09-12 15:26:13,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 15:26:13,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:13,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:13,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 15:26:13,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:26:13,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 15:26:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104446805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:13,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-12 15:26:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888595564] [2024-09-12 15:26:13,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:13,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 15:26:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 15:26:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-12 15:26:13,857 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:26:13,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:13,936 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-12 15:26:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 15:26:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-12 15:26:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:13,938 INFO L225 Difference]: With dead ends: 157 [2024-09-12 15:26:13,938 INFO L226 Difference]: Without dead ends: 155 [2024-09-12 15:26:13,938 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:26:13,938 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:13,938 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-12 15:26:13,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-12 15:26:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:26:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-12 15:26:13,948 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-12 15:26:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:13,948 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-12 15:26:13,948 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 15:26:13,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-12 15:26:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-12 15:26:13,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:13,949 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-12 15:26:14,150 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 15:26:14,150 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:14,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:14,150 INFO L85 PathProgramCache]: Analyzing trace with hash 907977772, now seen corresponding path program 33 times [2024-09-12 15:26:14,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793513945] [2024-09-12 15:26:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:14,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 15:26:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:26:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:26:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:26:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:26:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:26:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:26:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:26:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:26:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:26:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:26:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:26:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:26:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:26:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:26:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:26:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:26:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:26:14,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:14,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793513945] [2024-09-12 15:26:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793513945] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:14,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001200524] [2024-09-12 15:26:14,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:14,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:14,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:14,669 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) [2024-09-12 15:26:14,670 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 15:26:14,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 15:26:14,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:14,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 15:26:14,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:26:15,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:26:15,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001200524] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:15,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:15,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-09-12 15:26:15,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640284883] [2024-09-12 15:26:15,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:15,630 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 15:26:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 15:26:15,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 15:26:15,632 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:26:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:15,803 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-12 15:26:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 15:26:15,804 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 148 [2024-09-12 15:26:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:15,805 INFO L225 Difference]: With dead ends: 214 [2024-09-12 15:26:15,805 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 15:26:15,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 278 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 15:26:15,806 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:15,806 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 15:26:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-12 15:26:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:26:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-12 15:26:15,814 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-12 15:26:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:15,815 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-12 15:26:15,815 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:26:15,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-12 15:26:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-12 15:26:15,816 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:15,816 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:15,828 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:16,016 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 15:26:16,017 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 844968248, now seen corresponding path program 34 times [2024-09-12 15:26:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976116093] [2024-09-12 15:26:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:26:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:26:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976116093] [2024-09-12 15:26:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976116093] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306696285] [2024-09-12 15:26:16,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:16,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:16,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:16,377 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) [2024-09-12 15:26:16,378 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 15:26:16,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:16,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:16,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 15:26:16,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:26:16,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 15:26:16,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306696285] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:16,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:16,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-12 15:26:16,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883967379] [2024-09-12 15:26:16,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:16,874 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 15:26:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 15:26:16,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-12 15:26:16,875 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:26:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:16,971 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-12 15:26:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 15:26:16,971 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-12 15:26:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:16,972 INFO L225 Difference]: With dead ends: 165 [2024-09-12 15:26:16,972 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 15:26:16,973 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-12 15:26:16,973 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:16,973 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 15:26:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-12 15:26:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:26:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-12 15:26:16,984 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-12 15:26:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:16,985 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-12 15:26:16,985 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 15:26:16,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:16,985 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-12 15:26:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-12 15:26:16,986 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:16,986 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:16,999 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-12 15:26:17,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 15:26:17,190 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:17,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash 580840683, now seen corresponding path program 35 times [2024-09-12 15:26:17,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:17,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151407411] [2024-09-12 15:26:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:17,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 15:26:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:26:17,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151407411] [2024-09-12 15:26:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151407411] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129403601] [2024-09-12 15:26:17,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:17,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:17,837 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) [2024-09-12 15:26:17,839 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 15:26:17,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 15:26:17,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:17,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 15:26:17,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:26:18,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:26:18,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129403601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:18,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:18,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-09-12 15:26:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734590363] [2024-09-12 15:26:18,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:18,907 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 15:26:18,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 15:26:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 15:26:18,909 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:26:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:19,135 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-12 15:26:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 15:26:19,136 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 156 [2024-09-12 15:26:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:19,137 INFO L225 Difference]: With dead ends: 225 [2024-09-12 15:26:19,137 INFO L226 Difference]: Without dead ends: 160 [2024-09-12 15:26:19,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 293 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 15:26:19,139 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:19,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-12 15:26:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-12 15:26:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:26:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-12 15:26:19,149 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-12 15:26:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:19,150 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-12 15:26:19,150 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:26:19,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-12 15:26:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-12 15:26:19,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:19,151 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:19,163 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-12 15:26:19,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 15:26:19,355 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:19,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1523208713, now seen corresponding path program 36 times [2024-09-12 15:26:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:19,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234807091] [2024-09-12 15:26:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:26:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:26:19,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234807091] [2024-09-12 15:26:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234807091] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964374499] [2024-09-12 15:26:19,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:19,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:19,751 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) [2024-09-12 15:26:19,752 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 15:26:19,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-12 15:26:19,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:19,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 15:26:19,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:26:19,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 15:26:20,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964374499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:20,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:20,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-12 15:26:20,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897961533] [2024-09-12 15:26:20,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:20,211 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 15:26:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 15:26:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-12 15:26:20,212 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:26:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:20,312 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-12 15:26:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 15:26:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-12 15:26:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:20,313 INFO L225 Difference]: With dead ends: 173 [2024-09-12 15:26:20,313 INFO L226 Difference]: Without dead ends: 171 [2024-09-12 15:26:20,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-12 15:26:20,314 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:20,314 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-12 15:26:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-12 15:26:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:26:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-12 15:26:20,322 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-12 15:26:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:20,322 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-12 15:26:20,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 15:26:20,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-12 15:26:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-12 15:26:20,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:20,323 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:20,335 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-12 15:26:20,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 15:26:20,524 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:20,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -545035444, now seen corresponding path program 37 times [2024-09-12 15:26:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851773888] [2024-09-12 15:26:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 15:26:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:26:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851773888] [2024-09-12 15:26:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851773888] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287275693] [2024-09-12 15:26:21,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:21,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:21,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:21,101 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) [2024-09-12 15:26:21,102 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 15:26:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:21,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 15:26:21,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:26:21,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:26:22,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287275693] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:22,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-09-12 15:26:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959747894] [2024-09-12 15:26:22,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:22,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-12 15:26:22,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-12 15:26:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 15:26:22,225 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:26:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:22,414 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-12 15:26:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 15:26:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 164 [2024-09-12 15:26:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:22,416 INFO L225 Difference]: With dead ends: 236 [2024-09-12 15:26:22,416 INFO L226 Difference]: Without dead ends: 168 [2024-09-12 15:26:22,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 308 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 15:26:22,417 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:22,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-12 15:26:22,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-12 15:26:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:26:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-12 15:26:22,429 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-12 15:26:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:22,429 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-12 15:26:22,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:26:22,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-12 15:26:22,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-12 15:26:22,430 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:22,431 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:22,443 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:22,631 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 15:26:22,631 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:22,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash -151101352, now seen corresponding path program 38 times [2024-09-12 15:26:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:22,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077896139] [2024-09-12 15:26:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:26:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:26:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077896139] [2024-09-12 15:26:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077896139] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936998492] [2024-09-12 15:26:22,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:22,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:22,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:22,998 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) [2024-09-12 15:26:22,999 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-12 15:26:23,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:23,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:23,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 15:26:23,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:26:23,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 15:26:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936998492] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:23,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-12 15:26:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648991160] [2024-09-12 15:26:23,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:23,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 15:26:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 15:26:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-12 15:26:23,501 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:26:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:23,601 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-12 15:26:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 15:26:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-12 15:26:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:23,603 INFO L225 Difference]: With dead ends: 181 [2024-09-12 15:26:23,603 INFO L226 Difference]: Without dead ends: 179 [2024-09-12 15:26:23,604 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-12 15:26:23,604 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:23,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-12 15:26:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-12 15:26:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:26:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-12 15:26:23,620 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-12 15:26:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:23,621 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-12 15:26:23,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 15:26:23,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-12 15:26:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-12 15:26:23,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:23,622 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:23,633 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:23,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:23,823 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:23,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1782610379, now seen corresponding path program 39 times [2024-09-12 15:26:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095965290] [2024-09-12 15:26:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 15:26:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:26:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095965290] [2024-09-12 15:26:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095965290] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549894825] [2024-09-12 15:26:24,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:24,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:24,513 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) [2024-09-12 15:26:24,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-12 15:26:24,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-12 15:26:24,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:24,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 15:26:24,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:26:25,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:26:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549894825] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:25,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-09-12 15:26:25,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688649673] [2024-09-12 15:26:25,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:25,644 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 15:26:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 15:26:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 15:26:25,645 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:26:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:25,842 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-12 15:26:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 15:26:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 172 [2024-09-12 15:26:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:25,843 INFO L225 Difference]: With dead ends: 247 [2024-09-12 15:26:25,843 INFO L226 Difference]: Without dead ends: 176 [2024-09-12 15:26:25,844 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 323 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 15:26:25,844 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:25,844 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-12 15:26:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-12 15:26:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:26:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-12 15:26:25,853 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-12 15:26:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:25,854 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-12 15:26:25,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:26:25,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-12 15:26:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-12 15:26:25,855 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:25,855 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:25,869 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:26,055 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-12 15:26:26,055 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:26,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash -651451689, now seen corresponding path program 40 times [2024-09-12 15:26:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122180903] [2024-09-12 15:26:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:26,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:26:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:26:26,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122180903] [2024-09-12 15:26:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122180903] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036460465] [2024-09-12 15:26:26,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:26,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:26,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:26,490 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) [2024-09-12 15:26:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-12 15:26:26,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:26,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:26,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 15:26:26,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:26:26,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 15:26:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036460465] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:27,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-12 15:26:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716777140] [2024-09-12 15:26:27,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:27,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 15:26:27,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 15:26:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-12 15:26:27,026 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:26:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:27,133 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-12 15:26:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 15:26:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-12 15:26:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:27,134 INFO L225 Difference]: With dead ends: 189 [2024-09-12 15:26:27,134 INFO L226 Difference]: Without dead ends: 187 [2024-09-12 15:26:27,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-12 15:26:27,135 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:27,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 121 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-12 15:26:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-12 15:26:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:26:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-12 15:26:27,144 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-12 15:26:27,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:27,144 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-12 15:26:27,144 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 15:26:27,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-12 15:26:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-12 15:26:27,145 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:27,145 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:27,159 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:27,345 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:27,346 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:27,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:27,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1044759956, now seen corresponding path program 41 times [2024-09-12 15:26:27,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:27,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861987884] [2024-09-12 15:26:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 15:26:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:26:28,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861987884] [2024-09-12 15:26:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861987884] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058702652] [2024-09-12 15:26:28,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:28,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:28,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:28,069 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) [2024-09-12 15:26:28,071 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-12 15:26:28,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-12 15:26:28,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:28,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 15:26:28,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:26:28,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:26:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058702652] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-09-12 15:26:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933785677] [2024-09-12 15:26:29,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:29,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 15:26:29,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 15:26:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 15:26:29,445 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:26:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:29,699 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-12 15:26:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 15:26:29,699 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 180 [2024-09-12 15:26:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:29,701 INFO L225 Difference]: With dead ends: 258 [2024-09-12 15:26:29,701 INFO L226 Difference]: Without dead ends: 184 [2024-09-12 15:26:29,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 338 SyntacticMatches, 43 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 15:26:29,701 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:29,702 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-12 15:26:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-12 15:26:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:26:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-12 15:26:29,712 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-12 15:26:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:29,712 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-12 15:26:29,713 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:26:29,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-12 15:26:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-12 15:26:29,713 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:29,714 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:29,726 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-12 15:26:29,914 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:29,914 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:29,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:29,914 INFO L85 PathProgramCache]: Analyzing trace with hash -22964360, now seen corresponding path program 42 times [2024-09-12 15:26:29,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160007235] [2024-09-12 15:26:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:26:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:26:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:26:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:26:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:26:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:26:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:26:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:26:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:26:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:26:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:26:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:26:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:26:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:26:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:26:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:26:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:26:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:26:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:26:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:26:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:26:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:26:30,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160007235] [2024-09-12 15:26:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160007235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001610208] [2024-09-12 15:26:30,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:30,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:30,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:30,341 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) [2024-09-12 15:26:30,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-12 15:26:30,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-12 15:26:30,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:30,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 15:26:30,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:26:30,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 15:26:30,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001610208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:30,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:30,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-12 15:26:30,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592897417] [2024-09-12 15:26:30,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:30,939 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 15:26:30,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 15:26:30,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-12 15:26:30,940 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:26:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:31,063 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-12 15:26:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 15:26:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-12 15:26:31,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:31,065 INFO L225 Difference]: With dead ends: 197 [2024-09-12 15:26:31,065 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 15:26:31,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-12 15:26:31,065 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:31,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 15:26:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-12 15:26:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:26:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-12 15:26:31,076 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-12 15:26:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:31,076 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-12 15:26:31,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 15:26:31,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-12 15:26:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-12 15:26:31,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:31,077 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:31,090 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-12 15:26:31,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-12 15:26:31,282 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:31,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1913061035, now seen corresponding path program 43 times [2024-09-12 15:26:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009350771] [2024-09-12 15:26:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:31,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 15:26:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:26:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:26:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:26:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:26:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:26:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:31,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:26:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:26:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:26:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:26:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:26:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:26:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:26:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:26:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:26:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:26:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:26:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:26:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:26:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:26:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:26:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:26:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:26:32,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009350771] [2024-09-12 15:26:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009350771] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137463764] [2024-09-12 15:26:32,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:32,014 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) [2024-09-12 15:26:32,015 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-12 15:26:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:32,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 15:26:32,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:26:32,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:26:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137463764] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:33,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-09-12 15:26:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283249491] [2024-09-12 15:26:33,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:33,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 15:26:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 15:26:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 15:26:33,356 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:26:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:33,582 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-12 15:26:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-12 15:26:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 188 [2024-09-12 15:26:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:33,584 INFO L225 Difference]: With dead ends: 269 [2024-09-12 15:26:33,584 INFO L226 Difference]: Without dead ends: 192 [2024-09-12 15:26:33,584 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 353 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 15:26:33,585 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:33,585 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 494 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-12 15:26:33,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-12 15:26:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:26:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-12 15:26:33,595 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-12 15:26:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:33,595 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-12 15:26:33,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:26:33,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:33,595 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-12 15:26:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-12 15:26:33,596 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:33,596 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:33,608 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:33,796 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-12 15:26:33,797 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:33,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1485402185, now seen corresponding path program 44 times [2024-09-12 15:26:33,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:33,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104287149] [2024-09-12 15:26:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:33,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:26:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:26:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:26:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:26:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:26:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:26:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:26:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:26:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:26:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:26:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:26:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:26:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:26:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:26:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:26:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:26:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:26:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:26:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:26:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:26:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:26:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:26:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:26:34,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:34,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104287149] [2024-09-12 15:26:34,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104287149] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:34,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48325986] [2024-09-12 15:26:34,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:34,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:34,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:34,257 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) [2024-09-12 15:26:34,258 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-12 15:26:34,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:34,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:34,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-12 15:26:34,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:26:34,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 15:26:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48325986] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:34,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:34,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-12 15:26:34,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635620124] [2024-09-12 15:26:34,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:34,836 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 15:26:34,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 15:26:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-12 15:26:34,836 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:26:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:34,941 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-12 15:26:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 15:26:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-12 15:26:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:34,943 INFO L225 Difference]: With dead ends: 205 [2024-09-12 15:26:34,943 INFO L226 Difference]: Without dead ends: 203 [2024-09-12 15:26:34,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:26:34,943 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:34,943 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 81 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-12 15:26:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-12 15:26:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-12 15:26:34,953 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-12 15:26:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:34,953 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-12 15:26:34,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 15:26:34,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:34,954 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-12 15:26:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-12 15:26:34,954 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:34,954 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:34,967 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:35,154 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:35,155 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:35,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1500180084, now seen corresponding path program 45 times [2024-09-12 15:26:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:35,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931084228] [2024-09-12 15:26:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 15:26:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:26:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:26:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:26:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:26:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:26:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:26:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:26:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:26:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:26:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:26:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:26:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:26:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:26:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:26:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:26:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:26:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:26:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:26:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:26:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:26:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:26:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:26:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:26:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931084228] [2024-09-12 15:26:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931084228] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420171029] [2024-09-12 15:26:35,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:35,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:35,936 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) [2024-09-12 15:26:35,936 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-12 15:26:36,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-12 15:26:36,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:36,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 15:26:36,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:26:36,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:26:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420171029] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:37,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:37,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-09-12 15:26:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819195973] [2024-09-12 15:26:37,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:37,382 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-12 15:26:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-12 15:26:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 15:26:37,384 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:26:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:37,635 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-12 15:26:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 15:26:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 196 [2024-09-12 15:26:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:37,637 INFO L225 Difference]: With dead ends: 280 [2024-09-12 15:26:37,637 INFO L226 Difference]: Without dead ends: 200 [2024-09-12 15:26:37,637 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 368 SyntacticMatches, 47 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 15:26:37,638 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:37,638 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:37,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-12 15:26:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-12 15:26:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-12 15:26:37,649 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-12 15:26:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:37,649 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-12 15:26:37,649 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:26:37,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:37,649 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-12 15:26:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-12 15:26:37,650 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:37,650 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:37,663 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:37,850 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:37,850 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:37,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1290217832, now seen corresponding path program 46 times [2024-09-12 15:26:37,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090279930] [2024-09-12 15:26:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:26:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:26:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:26:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:26:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:26:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:26:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:26:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:26:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:26:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:26:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:26:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:26:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:26:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:26:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:26:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:26:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:26:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:26:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:26:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:26:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:26:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:26:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:26:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:26:38,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090279930] [2024-09-12 15:26:38,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090279930] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350273279] [2024-09-12 15:26:38,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:38,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:38,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:38,343 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) [2024-09-12 15:26:38,344 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-12 15:26:38,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:38,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:38,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 15:26:38,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:26:38,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 15:26:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350273279] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:38,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:38,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-12 15:26:38,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158347171] [2024-09-12 15:26:38,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:38,956 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 15:26:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 15:26:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-12 15:26:38,957 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:26:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:39,069 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-12 15:26:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 15:26:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-12 15:26:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:39,071 INFO L225 Difference]: With dead ends: 213 [2024-09-12 15:26:39,071 INFO L226 Difference]: Without dead ends: 211 [2024-09-12 15:26:39,071 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 15:26:39,071 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:39,071 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-12 15:26:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-12 15:26:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-12 15:26:39,082 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-12 15:26:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:39,082 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-12 15:26:39,082 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 15:26:39,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-12 15:26:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-12 15:26:39,083 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:39,083 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:39,096 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-12 15:26:39,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-12 15:26:39,284 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:39,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2145418123, now seen corresponding path program 47 times [2024-09-12 15:26:39,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035971048] [2024-09-12 15:26:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 15:26:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:26:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:26:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:26:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:26:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:26:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:26:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:26:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:26:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:26:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:26:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:26:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:26:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:26:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:26:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:26:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:26:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:26:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:26:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:26:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:26:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:26:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:26:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:26:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:40,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035971048] [2024-09-12 15:26:40,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035971048] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746179010] [2024-09-12 15:26:40,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:40,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:40,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:40,129 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) [2024-09-12 15:26:40,130 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-12 15:26:40,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-12 15:26:40,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:40,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-12 15:26:40,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:41,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:41,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746179010] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:41,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2024-09-12 15:26:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038893016] [2024-09-12 15:26:41,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:41,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-12 15:26:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-12 15:26:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 15:26:41,663 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:26:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:41,887 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-12 15:26:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-12 15:26:41,888 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 204 [2024-09-12 15:26:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:41,889 INFO L225 Difference]: With dead ends: 291 [2024-09-12 15:26:41,889 INFO L226 Difference]: Without dead ends: 208 [2024-09-12 15:26:41,889 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 383 SyntacticMatches, 49 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 15:26:41,890 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:41,890 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-12 15:26:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-12 15:26:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-12 15:26:41,901 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-12 15:26:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:41,901 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-12 15:26:41,901 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:26:41,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-12 15:26:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-12 15:26:41,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:41,902 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:41,914 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-12 15:26:42,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-12 15:26:42,103 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:42,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -167480169, now seen corresponding path program 48 times [2024-09-12 15:26:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:42,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561675717] [2024-09-12 15:26:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:26:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:26:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:26:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:26:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:26:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:26:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:26:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:42,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561675717] [2024-09-12 15:26:42,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561675717] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932013064] [2024-09-12 15:26:42,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:42,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:42,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:42,637 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) [2024-09-12 15:26:42,640 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-12 15:26:42,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-12 15:26:42,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:42,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 15:26:42,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:42,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 15:26:43,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932013064] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:43,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:43,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-12 15:26:43,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663239996] [2024-09-12 15:26:43,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:43,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 15:26:43,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 15:26:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 15:26:43,280 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:43,398 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-12 15:26:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 15:26:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-09-12 15:26:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:43,399 INFO L225 Difference]: With dead ends: 221 [2024-09-12 15:26:43,399 INFO L226 Difference]: Without dead ends: 219 [2024-09-12 15:26:43,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 15:26:43,400 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:43,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-12 15:26:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-12 15:26:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-12 15:26:43,411 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-12 15:26:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:43,412 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-12 15:26:43,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 15:26:43,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-12 15:26:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-12 15:26:43,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:43,413 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:43,426 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:43,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:43,614 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1067061076, now seen corresponding path program 49 times [2024-09-12 15:26:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:43,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765377002] [2024-09-12 15:26:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:43,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 15:26:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:26:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:26:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:26:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:26:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:26:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:26:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:26:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:26:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:26:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:26:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:26:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:26:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:26:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:26:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:26:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:26:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:26:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:26:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:26:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:26:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:26:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:26:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:26:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:26:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:44,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:44,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765377002] [2024-09-12 15:26:44,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765377002] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:44,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101627395] [2024-09-12 15:26:44,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:44,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:44,517 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) [2024-09-12 15:26:44,518 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-12 15:26:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:44,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 15:26:44,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:45,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101627395] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:46,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:46,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-09-12 15:26:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353411274] [2024-09-12 15:26:46,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:46,203 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 15:26:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 15:26:46,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 15:26:46,204 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:26:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:46,451 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-12 15:26:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 15:26:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 212 [2024-09-12 15:26:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:46,453 INFO L225 Difference]: With dead ends: 302 [2024-09-12 15:26:46,453 INFO L226 Difference]: Without dead ends: 216 [2024-09-12 15:26:46,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 398 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 15:26:46,456 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:46,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 399 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-12 15:26:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-12 15:26:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-12 15:26:46,470 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-12 15:26:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:46,470 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-12 15:26:46,470 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 15:26:46,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-12 15:26:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-12 15:26:46,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:46,471 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:46,485 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:46,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-12 15:26:46,672 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:46,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -424272456, now seen corresponding path program 50 times [2024-09-12 15:26:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524732960] [2024-09-12 15:26:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:26:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:26:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:26:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:26:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:26:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:26:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:26:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:47,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:47,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524732960] [2024-09-12 15:26:47,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524732960] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:47,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334140644] [2024-09-12 15:26:47,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:26:47,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:47,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:47,246 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 15:26:47,246 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-12 15:26:47,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:26:47,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:47,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 15:26:47,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:47,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 15:26:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334140644] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:47,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:47,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-12 15:26:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577407447] [2024-09-12 15:26:47,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:47,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 15:26:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 15:26:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 15:26:47,969 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:48,076 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-12 15:26:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 15:26:48,076 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-12 15:26:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:48,078 INFO L225 Difference]: With dead ends: 229 [2024-09-12 15:26:48,078 INFO L226 Difference]: Without dead ends: 227 [2024-09-12 15:26:48,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:26:48,078 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:48,078 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-12 15:26:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-12 15:26:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-12 15:26:48,090 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-12 15:26:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:48,090 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-12 15:26:48,090 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 15:26:48,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-12 15:26:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-12 15:26:48,091 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:48,091 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:48,104 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:48,291 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:48,292 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:48,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash -516231061, now seen corresponding path program 51 times [2024-09-12 15:26:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:48,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486098129] [2024-09-12 15:26:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 15:26:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:26:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:26:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:26:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:26:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:26:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:26:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:26:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:26:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:26:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:26:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:26:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:26:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:26:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:26:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:26:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:26:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:26:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:26:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:26:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:26:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:26:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:26:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:26:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:26:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:26:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:49,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:49,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486098129] [2024-09-12 15:26:49,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486098129] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:49,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852260332] [2024-09-12 15:26:49,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:26:49,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:49,266 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) [2024-09-12 15:26:49,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-12 15:26:49,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-12 15:26:49,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:49,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 15:26:49,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:50,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852260332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:51,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-09-12 15:26:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567338341] [2024-09-12 15:26:51,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:51,080 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 15:26:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 15:26:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 15:26:51,082 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-12 15:26:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:51,346 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-12 15:26:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-12 15:26:51,347 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 220 [2024-09-12 15:26:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:51,348 INFO L225 Difference]: With dead ends: 313 [2024-09-12 15:26:51,348 INFO L226 Difference]: Without dead ends: 224 [2024-09-12 15:26:51,349 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 413 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 15:26:51,349 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:51,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-12 15:26:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-12 15:26:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-12 15:26:51,361 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-12 15:26:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:51,361 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-12 15:26:51,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-12 15:26:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-12 15:26:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-12 15:26:51,363 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:51,363 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:51,375 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:51,563 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:51,563 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:51,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1304211081, now seen corresponding path program 52 times [2024-09-12 15:26:51,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:51,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239316160] [2024-09-12 15:26:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:26:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:26:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:26:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:26:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:26:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:26:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:26:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:52,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:52,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239316160] [2024-09-12 15:26:52,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239316160] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:52,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337973699] [2024-09-12 15:26:52,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:26:52,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:52,157 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) [2024-09-12 15:26:52,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-12 15:26:52,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:26:52,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:52,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-12 15:26:52,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:52,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-12 15:26:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337973699] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:52,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:52,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-12 15:26:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69829557] [2024-09-12 15:26:52,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:52,870 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 15:26:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 15:26:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 15:26:52,871 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:53,000 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-12 15:26:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 15:26:53,001 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-09-12 15:26:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:53,002 INFO L225 Difference]: With dead ends: 237 [2024-09-12 15:26:53,002 INFO L226 Difference]: Without dead ends: 235 [2024-09-12 15:26:53,002 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 15:26:53,003 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:53,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-12 15:26:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-12 15:26:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-12 15:26:53,015 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-12 15:26:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:53,015 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-12 15:26:53,015 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 15:26:53,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:53,016 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-12 15:26:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-12 15:26:53,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:53,017 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:53,030 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-12 15:26:53,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-12 15:26:53,217 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:53,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash -906045492, now seen corresponding path program 53 times [2024-09-12 15:26:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:53,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148304942] [2024-09-12 15:26:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 15:26:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:26:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:26:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:26:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:26:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:26:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:26:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:26:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:26:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:26:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:26:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:26:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:26:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:26:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:26:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:26:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:26:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:26:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:26:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:26:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:26:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:26:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:26:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:26:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:26:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:26:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:26:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1082 proven. 457 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148304942] [2024-09-12 15:26:54,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148304942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772704895] [2024-09-12 15:26:54,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:26:54,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:54,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:54,300 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) [2024-09-12 15:26:54,301 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-12 15:26:54,383 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-12 15:26:54,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:54,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-12 15:26:54,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:55,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:56,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772704895] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:56,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:56,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 89 [2024-09-12 15:26:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530108713] [2024-09-12 15:26:56,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:56,162 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-12 15:26:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-12 15:26:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 15:26:56,163 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 15:26:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:56,420 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-12 15:26:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-12 15:26:56,421 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 228 [2024-09-12 15:26:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:56,422 INFO L225 Difference]: With dead ends: 324 [2024-09-12 15:26:56,422 INFO L226 Difference]: Without dead ends: 232 [2024-09-12 15:26:56,423 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 428 SyntacticMatches, 55 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 15:26:56,423 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:56,423 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:26:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-12 15:26:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-12 15:26:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:26:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-12 15:26:56,436 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-12 15:26:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:56,436 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-12 15:26:56,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-12 15:26:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-12 15:26:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-12 15:26:56,437 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:56,437 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:56,449 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-12 15:26:56,638 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:56,638 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:56,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:56,638 INFO L85 PathProgramCache]: Analyzing trace with hash -196383528, now seen corresponding path program 54 times [2024-09-12 15:26:56,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:56,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273828534] [2024-09-12 15:26:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:26:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:26:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:26:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:26:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:26:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:26:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:26:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273828534] [2024-09-12 15:26:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273828534] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107743604] [2024-09-12 15:26:57,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:26:57,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:57,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:57,260 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) [2024-09-12 15:26:57,261 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-12 15:26:57,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-12 15:26:57,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:26:57,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 15:26:57,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:26:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:57,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:26:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-12 15:26:58,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107743604] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:26:58,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:26:58,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-12 15:26:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017130785] [2024-09-12 15:26:58,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:26:58,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 15:26:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:26:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 15:26:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 15:26:58,021 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:26:58,150 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-12 15:26:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 15:26:58,150 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-12 15:26:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:26:58,151 INFO L225 Difference]: With dead ends: 245 [2024-09-12 15:26:58,152 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 15:26:58,152 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 15:26:58,152 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:26:58,152 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:26:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 15:26:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-12 15:26:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:26:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-12 15:26:58,165 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-12 15:26:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:26:58,166 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-12 15:26:58,166 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 15:26:58,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-12 15:26:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-12 15:26:58,167 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:26:58,167 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:26:58,180 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-09-12 15:26:58,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:58,367 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:26:58,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:26:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash -888906421, now seen corresponding path program 55 times [2024-09-12 15:26:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:26:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724056324] [2024-09-12 15:26:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:26:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:26:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:26:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 15:26:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:26:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:26:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:26:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:26:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:26:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:26:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:26:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:26:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:26:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:26:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:26:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:26:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:26:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:26:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:26:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:26:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:26:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:26:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:26:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:26:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:26:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:26:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:26:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:26:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:26:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:26:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:26:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1164 proven. 488 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:26:59,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:26:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724056324] [2024-09-12 15:26:59,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724056324] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:26:59,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825280146] [2024-09-12 15:26:59,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:26:59,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:26:59,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:26:59,482 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) [2024-09-12 15:26:59,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-12 15:26:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:26:59,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-12 15:26:59,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:27:00,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:27:01,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825280146] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:01,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:01,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2024-09-12 15:27:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807588346] [2024-09-12 15:27:01,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:01,464 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-12 15:27:01,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-12 15:27:01,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 15:27:01,465 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-12 15:27:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:01,781 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-12 15:27:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-12 15:27:01,782 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 236 [2024-09-12 15:27:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:01,783 INFO L225 Difference]: With dead ends: 335 [2024-09-12 15:27:01,783 INFO L226 Difference]: Without dead ends: 240 [2024-09-12 15:27:01,784 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 443 SyntacticMatches, 57 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-09-12 15:27:01,784 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:01,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 791 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-12 15:27:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-12 15:27:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:27:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-12 15:27:01,798 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-12 15:27:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:01,798 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-12 15:27:01,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-12 15:27:01,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-12 15:27:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-12 15:27:01,799 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:01,799 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:01,812 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-12 15:27:02,000 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-12 15:27:02,001 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:02,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1323227561, now seen corresponding path program 56 times [2024-09-12 15:27:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:02,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557262077] [2024-09-12 15:27:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:27:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:27:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:27:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:27:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:27:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:27:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:27:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:27:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:27:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:27:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:27:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:27:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:27:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:27:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:27:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:27:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:27:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:27:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:27:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:27:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:27:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:27:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:27:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:27:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:27:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:27:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:27:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:27:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:27:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557262077] [2024-09-12 15:27:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557262077] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155344863] [2024-09-12 15:27:02,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:27:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:02,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:02,697 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) [2024-09-12 15:27:02,698 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-12 15:27:02,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:27:02,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:02,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-12 15:27:02,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:27:02,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-12 15:27:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155344863] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:03,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-12 15:27:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699747544] [2024-09-12 15:27:03,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:03,540 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 15:27:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 15:27:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 15:27:03,541 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:27:03,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:03,676 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-12 15:27:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-12 15:27:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-12 15:27:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:03,678 INFO L225 Difference]: With dead ends: 253 [2024-09-12 15:27:03,678 INFO L226 Difference]: Without dead ends: 251 [2024-09-12 15:27:03,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:27:03,678 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:03,678 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 125 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-12 15:27:03,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-12 15:27:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:27:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-12 15:27:03,692 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-12 15:27:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:03,692 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-12 15:27:03,692 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 15:27:03,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-12 15:27:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-12 15:27:03,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:03,694 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:03,706 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-12 15:27:03,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-12 15:27:03,894 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:03,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:03,895 INFO L85 PathProgramCache]: Analyzing trace with hash 649185004, now seen corresponding path program 57 times [2024-09-12 15:27:03,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:03,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466889435] [2024-09-12 15:27:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:03,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 15:27:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:27:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:27:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:27:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:27:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:27:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:27:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:27:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:27:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:27:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:27:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:27:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:27:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:27:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:27:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:27:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:27:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:27:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:27:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:27:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:27:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:27:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:27:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:27:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:27:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:27:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:27:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:27:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:27:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1249 proven. 520 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:27:05,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466889435] [2024-09-12 15:27:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466889435] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895050367] [2024-09-12 15:27:05,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:27:05,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:05,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:05,110 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) [2024-09-12 15:27:05,111 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-12 15:27:05,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-12 15:27:05,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:05,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 15:27:05,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:27:06,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:27:07,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895050367] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:07,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2024-09-12 15:27:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223580317] [2024-09-12 15:27:07,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:07,296 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-09-12 15:27:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-09-12 15:27:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 15:27:07,297 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-12 15:27:07,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:07,641 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-12 15:27:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-12 15:27:07,642 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 244 [2024-09-12 15:27:07,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:07,643 INFO L225 Difference]: With dead ends: 346 [2024-09-12 15:27:07,643 INFO L226 Difference]: Without dead ends: 248 [2024-09-12 15:27:07,644 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 458 SyntacticMatches, 59 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 15:27:07,644 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:07,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 770 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-12 15:27:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-12 15:27:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:27:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-12 15:27:07,660 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-12 15:27:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:07,660 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-12 15:27:07,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-12 15:27:07,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-12 15:27:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-12 15:27:07,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:07,662 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:07,675 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-12 15:27:07,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-12 15:27:07,862 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:07,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash -550845448, now seen corresponding path program 58 times [2024-09-12 15:27:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611744877] [2024-09-12 15:27:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:07,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:27:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:27:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:27:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:27:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:27:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:27:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:27:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:27:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:27:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:27:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:27:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:27:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:27:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:27:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:27:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:27:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:27:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:27:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:27:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:27:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:27:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:27:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:27:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:27:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:27:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:27:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:27:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:27:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:27:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:27:08,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611744877] [2024-09-12 15:27:08,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611744877] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050855875] [2024-09-12 15:27:08,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:27:08,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:08,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:08,598 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) [2024-09-12 15:27:08,599 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-12 15:27:08,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:27:08,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:08,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 15:27:08,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:27:08,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-12 15:27:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050855875] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:09,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-12 15:27:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625375785] [2024-09-12 15:27:09,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:09,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 15:27:09,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 15:27:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 15:27:09,431 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:27:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:09,569 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-12 15:27:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-12 15:27:09,570 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-12 15:27:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:09,571 INFO L225 Difference]: With dead ends: 261 [2024-09-12 15:27:09,571 INFO L226 Difference]: Without dead ends: 259 [2024-09-12 15:27:09,571 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 15:27:09,572 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:09,572 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-12 15:27:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-12 15:27:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:27:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-12 15:27:09,586 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-12 15:27:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:09,586 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-12 15:27:09,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 15:27:09,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-12 15:27:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-12 15:27:09,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:09,588 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:09,601 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-12 15:27:09,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:09,788 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:09,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 967492139, now seen corresponding path program 59 times [2024-09-12 15:27:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:09,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415755153] [2024-09-12 15:27:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 15:27:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:27:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:27:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:27:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:27:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:27:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:27:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:27:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:27:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:27:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:27:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:27:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:27:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:27:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:27:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:27:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:27:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:27:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:27:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:27:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:27:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:27:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:27:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:27:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:27:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:27:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:27:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:27:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:27:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:27:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1337 proven. 553 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:27:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:11,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415755153] [2024-09-12 15:27:11,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415755153] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:11,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275723082] [2024-09-12 15:27:11,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:27:11,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:11,079 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) [2024-09-12 15:27:11,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-12 15:27:11,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-12 15:27:11,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:11,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 15:27:11,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:27:12,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:27:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275723082] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:13,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:13,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 98 [2024-09-12 15:27:13,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416269811] [2024-09-12 15:27:13,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:13,263 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-12 15:27:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-12 15:27:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 15:27:13,264 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 15:27:13,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:13,646 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-12 15:27:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-12 15:27:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 252 [2024-09-12 15:27:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:13,649 INFO L225 Difference]: With dead ends: 357 [2024-09-12 15:27:13,649 INFO L226 Difference]: Without dead ends: 256 [2024-09-12 15:27:13,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 473 SyntacticMatches, 61 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6150 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 15:27:13,650 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:13,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-12 15:27:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-12 15:27:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:27:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-12 15:27:13,668 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-12 15:27:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:13,668 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-12 15:27:13,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 15:27:13,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-12 15:27:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-12 15:27:13,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:13,670 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:13,683 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-09-12 15:27:13,870 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-12 15:27:13,872 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:13,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:13,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1895042249, now seen corresponding path program 60 times [2024-09-12 15:27:13,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:13,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070906814] [2024-09-12 15:27:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:13,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:27:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:27:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:27:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:27:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:27:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:27:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:27:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:27:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:27:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:27:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:27:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:27:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:27:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:27:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:27:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:27:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:27:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:27:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:27:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:27:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:27:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:27:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:27:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:27:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:27:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:27:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:27:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:27:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:27:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:27:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:27:14,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070906814] [2024-09-12 15:27:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070906814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490722451] [2024-09-12 15:27:14,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:27:14,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:14,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:14,650 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) [2024-09-12 15:27:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-12 15:27:14,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-12 15:27:14,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:14,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 15:27:14,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:27:14,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-12 15:27:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490722451] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:15,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-12 15:27:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116631095] [2024-09-12 15:27:15,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:15,556 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 15:27:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 15:27:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 15:27:15,557 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:27:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:15,720 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-12 15:27:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 15:27:15,720 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-12 15:27:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:15,722 INFO L225 Difference]: With dead ends: 269 [2024-09-12 15:27:15,722 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 15:27:15,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 15:27:15,722 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:15,722 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 113 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 15:27:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-12 15:27:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:27:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-12 15:27:15,752 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-12 15:27:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:15,752 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-12 15:27:15,752 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-12 15:27:15,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-12 15:27:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-12 15:27:15,754 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:15,754 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:15,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-12 15:27:15,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:15,955 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:15,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash 38845964, now seen corresponding path program 61 times [2024-09-12 15:27:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553184064] [2024-09-12 15:27:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 15:27:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:27:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:27:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:27:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:27:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:27:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:27:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:27:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:27:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:27:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:27:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:27:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:27:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:27:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:27:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:27:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:27:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:27:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:27:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:27:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:27:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:27:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:27:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:27:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:27:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:27:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:27:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:27:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:27:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:27:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:27:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1428 proven. 587 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:27:17,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553184064] [2024-09-12 15:27:17,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553184064] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318126412] [2024-09-12 15:27:17,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:27:17,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:17,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:17,422 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) [2024-09-12 15:27:17,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-12 15:27:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:17,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 15:27:17,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:27:18,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:27:19,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318126412] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:19,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 101 [2024-09-12 15:27:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720622698] [2024-09-12 15:27:19,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:19,752 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-12 15:27:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-12 15:27:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 15:27:19,753 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 15:27:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:20,161 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-12 15:27:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-12 15:27:20,161 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 260 [2024-09-12 15:27:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:20,163 INFO L225 Difference]: With dead ends: 368 [2024-09-12 15:27:20,163 INFO L226 Difference]: Without dead ends: 264 [2024-09-12 15:27:20,164 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 488 SyntacticMatches, 63 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 15:27:20,164 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:20,164 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 672 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-12 15:27:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-12 15:27:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:27:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-12 15:27:20,181 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-12 15:27:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:20,181 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-12 15:27:20,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 15:27:20,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-12 15:27:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-12 15:27:20,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:20,182 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:20,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-12 15:27:20,383 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:20,383 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:20,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1931879192, now seen corresponding path program 62 times [2024-09-12 15:27:20,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:20,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356310108] [2024-09-12 15:27:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:20,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:27:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:27:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:27:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:27:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:27:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:27:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:27:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:27:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:27:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:27:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:27:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:27:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:27:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:27:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:27:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:27:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:27:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:27:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:27:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:27:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:27:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:27:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:27:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:27:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:27:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:27:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:27:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:27:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:27:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:27:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:27:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:27:21,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:21,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356310108] [2024-09-12 15:27:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356310108] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:21,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435327320] [2024-09-12 15:27:21,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:27:21,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:21,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:21,223 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) [2024-09-12 15:27:21,224 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-12 15:27:21,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:27:21,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:21,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-12 15:27:21,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:27:21,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-12 15:27:22,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435327320] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:22,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:22,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-12 15:27:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766789616] [2024-09-12 15:27:22,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:22,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 15:27:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 15:27:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 15:27:22,191 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:27:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:22,333 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-12 15:27:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 15:27:22,333 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-12 15:27:22,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:22,335 INFO L225 Difference]: With dead ends: 277 [2024-09-12 15:27:22,335 INFO L226 Difference]: Without dead ends: 275 [2024-09-12 15:27:22,335 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 15:27:22,335 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:22,336 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-12 15:27:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-12 15:27:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:27:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-12 15:27:22,373 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-12 15:27:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:22,373 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-12 15:27:22,373 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 15:27:22,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-12 15:27:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-12 15:27:22,375 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:22,375 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:22,388 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:22,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-12 15:27:22,578 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:22,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash -786686197, now seen corresponding path program 63 times [2024-09-12 15:27:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:22,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106639548] [2024-09-12 15:27:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 15:27:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:27:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:27:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:27:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:27:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:27:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:27:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:27:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:27:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:27:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:27:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:27:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:27:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:27:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:27:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:27:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:27:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:27:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:27:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:27:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:27:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:27:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:27:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:27:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:27:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:27:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:27:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:27:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:27:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:27:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:27:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:27:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1522 proven. 622 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:27:24,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106639548] [2024-09-12 15:27:24,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106639548] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896665476] [2024-09-12 15:27:24,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:27:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:24,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:24,031 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) [2024-09-12 15:27:24,032 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-12 15:27:24,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-12 15:27:24,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:24,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 15:27:24,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:27:25,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:27:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896665476] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:26,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 104 [2024-09-12 15:27:26,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262441334] [2024-09-12 15:27:26,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:26,580 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-12 15:27:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-12 15:27:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-09-12 15:27:26,581 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-12 15:27:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:26,937 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-12 15:27:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-12 15:27:26,937 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 268 [2024-09-12 15:27:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:26,939 INFO L225 Difference]: With dead ends: 379 [2024-09-12 15:27:26,939 INFO L226 Difference]: Without dead ends: 272 [2024-09-12 15:27:26,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 503 SyntacticMatches, 65 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-09-12 15:27:26,946 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:26,946 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-12 15:27:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-12 15:27:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:27:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-12 15:27:26,963 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-12 15:27:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:26,963 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-12 15:27:26,963 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-12 15:27:26,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-12 15:27:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-12 15:27:26,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:26,965 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:26,977 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-12 15:27:27,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:27,165 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:27,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1879984105, now seen corresponding path program 64 times [2024-09-12 15:27:27,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:27,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722174923] [2024-09-12 15:27:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:27:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:27:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:27:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:27:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:27:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:27:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:27:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:27:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:27:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:27:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:27:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:27:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:27:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:27:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:27:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:27:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:27:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:27,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:27:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:27:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:27:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:27:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:27:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:27:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:27:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:27:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:27:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:27:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:27:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:27:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:27:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:27:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:27:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:27:28,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:28,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722174923] [2024-09-12 15:27:28,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722174923] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695594059] [2024-09-12 15:27:28,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:27:28,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:28,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:28,016 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) [2024-09-12 15:27:28,017 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-12 15:27:28,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:27:28,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:28,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 15:27:28,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:27:28,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-12 15:27:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695594059] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:28,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:28,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-12 15:27:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790898919] [2024-09-12 15:27:28,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:28,999 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 15:27:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 15:27:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 15:27:29,000 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:27:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:29,165 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-12 15:27:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 15:27:29,166 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-12 15:27:29,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:29,167 INFO L225 Difference]: With dead ends: 285 [2024-09-12 15:27:29,167 INFO L226 Difference]: Without dead ends: 283 [2024-09-12 15:27:29,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 15:27:29,167 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:29,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-12 15:27:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-12 15:27:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:27:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-12 15:27:29,184 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-12 15:27:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:29,185 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-12 15:27:29,185 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 15:27:29,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-12 15:27:29,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-12 15:27:29,186 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:29,186 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:29,198 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-09-12 15:27:29,386 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:29,387 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:29,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1898822956, now seen corresponding path program 65 times [2024-09-12 15:27:29,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:29,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546311834] [2024-09-12 15:27:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:29,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 15:27:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:27:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:27:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:27:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:27:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:27:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:27:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:27:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:27:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:27:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:27:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:27:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:27:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:27:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:27:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:27:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:27:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:27:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:27:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:27:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:27:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:27:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:27:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:27:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:27:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:27:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:27:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:27:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:27:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:27:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:27:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:27:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:30,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:27:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1619 proven. 658 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:27:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546311834] [2024-09-12 15:27:31,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546311834] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588863147] [2024-09-12 15:27:31,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:27:31,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:31,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:31,002 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) [2024-09-12 15:27:31,003 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-12 15:27:31,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-12 15:27:31,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:31,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-12 15:27:31,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:27:32,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:27:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588863147] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:33,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 107 [2024-09-12 15:27:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867973891] [2024-09-12 15:27:33,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:33,557 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-12 15:27:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-12 15:27:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-09-12 15:27:33,558 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-12 15:27:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:33,934 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-12 15:27:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-12 15:27:33,935 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 276 [2024-09-12 15:27:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:33,936 INFO L225 Difference]: With dead ends: 390 [2024-09-12 15:27:33,936 INFO L226 Difference]: Without dead ends: 280 [2024-09-12 15:27:33,937 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 518 SyntacticMatches, 67 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-09-12 15:27:33,937 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:33,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 701 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-12 15:27:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-12 15:27:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:27:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-12 15:27:33,954 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-12 15:27:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:33,954 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-12 15:27:33,955 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-12 15:27:33,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-12 15:27:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-12 15:27:33,956 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:33,956 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:33,968 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:34,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-12 15:27:34,156 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:34,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1687128632, now seen corresponding path program 66 times [2024-09-12 15:27:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837600851] [2024-09-12 15:27:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:27:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:27:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:27:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:27:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:27:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:27:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:27:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:27:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:27:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:27:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:27:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:27:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:27:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:27:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:27:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:27:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:27:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:27:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:27:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:27:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:27:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:27:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:27:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:27:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:27:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:27:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:27:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:27:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:27:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:27:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:27:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:27:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:27:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:27:35,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:35,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837600851] [2024-09-12 15:27:35,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837600851] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:35,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573757432] [2024-09-12 15:27:35,084 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:27:35,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:35,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:35,085 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) [2024-09-12 15:27:35,086 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-12 15:27:35,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-12 15:27:35,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:35,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-12 15:27:35,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:27:35,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-12 15:27:36,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573757432] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:36,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:36,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-12 15:27:36,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963132120] [2024-09-12 15:27:36,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:36,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-12 15:27:36,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-12 15:27:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 15:27:36,166 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:27:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:36,313 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-12 15:27:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 15:27:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-12 15:27:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:36,315 INFO L225 Difference]: With dead ends: 293 [2024-09-12 15:27:36,315 INFO L226 Difference]: Without dead ends: 291 [2024-09-12 15:27:36,315 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 15:27:36,315 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:36,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-12 15:27:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-12 15:27:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-12 15:27:36,333 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-12 15:27:36,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:36,333 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-12 15:27:36,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 15:27:36,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-12 15:27:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-12 15:27:36,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:36,334 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:36,347 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-09-12 15:27:36,534 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-12 15:27:36,535 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:36,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1127844885, now seen corresponding path program 67 times [2024-09-12 15:27:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418499203] [2024-09-12 15:27:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 15:27:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:27:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:27:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:27:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:27:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:27:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:27:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:27:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:27:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:27:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:27:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:27:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:27:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:27:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:27:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:27:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:27:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:27:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:27:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:27:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:27:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:27:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:27:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:27:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:27:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:27:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:27:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:27:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:27:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:27:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:27:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:27:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:27:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:27:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1719 proven. 695 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:27:38,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418499203] [2024-09-12 15:27:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418499203] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652206934] [2024-09-12 15:27:38,176 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:27:38,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:38,177 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) [2024-09-12 15:27:38,178 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-12 15:27:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:38,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 15:27:38,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:27:39,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:27:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652206934] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:41,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 110 [2024-09-12 15:27:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293943292] [2024-09-12 15:27:41,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:41,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-12 15:27:41,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-12 15:27:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-09-12 15:27:41,029 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-12 15:27:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:41,466 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-12 15:27:41,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-12 15:27:41,466 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 284 [2024-09-12 15:27:41,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:41,468 INFO L225 Difference]: With dead ends: 401 [2024-09-12 15:27:41,468 INFO L226 Difference]: Without dead ends: 288 [2024-09-12 15:27:41,469 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 533 SyntacticMatches, 69 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7786 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-09-12 15:27:41,469 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:41,469 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 804 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-12 15:27:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-12 15:27:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-12 15:27:41,503 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-12 15:27:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:41,503 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-12 15:27:41,503 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-12 15:27:41,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-12 15:27:41,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-12 15:27:41,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:41,504 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:41,517 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:41,704 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-12 15:27:41,705 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2134930679, now seen corresponding path program 68 times [2024-09-12 15:27:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258657892] [2024-09-12 15:27:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:27:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:27:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:27:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:27:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:27:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:27:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:27:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:27:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:27:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:27:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:27:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:27:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:27:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:27:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:27:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:27:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:27:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:27:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:27:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:27:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:27:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:27:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:27:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:27:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:27:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:27:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:27:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:27:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:27:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:27:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:27:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:27:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:27:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:27:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:27:42,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258657892] [2024-09-12 15:27:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258657892] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349221390] [2024-09-12 15:27:42,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:27:42,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:42,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:42,648 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) [2024-09-12 15:27:42,649 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-12 15:27:42,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:27:42,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:42,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-12 15:27:42,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:27:42,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-12 15:27:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349221390] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:43,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:43,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-12 15:27:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228880590] [2024-09-12 15:27:43,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:43,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 15:27:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:43,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 15:27:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 15:27:43,706 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:27:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:43,855 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-12 15:27:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 15:27:43,855 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-12 15:27:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:43,857 INFO L225 Difference]: With dead ends: 301 [2024-09-12 15:27:43,857 INFO L226 Difference]: Without dead ends: 299 [2024-09-12 15:27:43,857 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:27:43,857 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:43,858 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-12 15:27:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-12 15:27:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-12 15:27:43,876 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-12 15:27:43,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:43,876 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-12 15:27:43,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 15:27:43,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-12 15:27:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-12 15:27:43,878 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:43,878 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:43,891 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-12 15:27:44,079 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:44,079 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:44,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1877294004, now seen corresponding path program 69 times [2024-09-12 15:27:44,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:44,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094598448] [2024-09-12 15:27:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 15:27:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:27:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:27:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:27:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:27:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:27:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:27:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:27:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:27:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:27:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:27:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:27:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:27:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:27:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:27:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:27:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:27:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:27:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:27:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:27:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:27:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:27:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:27:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:27:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:27:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:27:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:27:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:27:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:27:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:27:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:27:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:27:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:27:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:27:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:27:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1822 proven. 733 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:45,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094598448] [2024-09-12 15:27:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094598448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191712148] [2024-09-12 15:27:45,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:27:45,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:45,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:45,781 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) [2024-09-12 15:27:45,783 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-12 15:27:45,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-12 15:27:45,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:45,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-12 15:27:45,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:47,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191712148] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:48,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:48,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 113 [2024-09-12 15:27:48,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144522724] [2024-09-12 15:27:48,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:48,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-09-12 15:27:48,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-09-12 15:27:48,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-09-12 15:27:48,716 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-12 15:27:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:49,108 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-12 15:27:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-12 15:27:49,108 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 292 [2024-09-12 15:27:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:49,110 INFO L225 Difference]: With dead ends: 412 [2024-09-12 15:27:49,110 INFO L226 Difference]: Without dead ends: 296 [2024-09-12 15:27:49,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 548 SyntacticMatches, 71 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8225 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-09-12 15:27:49,111 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:49,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-12 15:27:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-12 15:27:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-12 15:27:49,129 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-12 15:27:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:49,129 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-12 15:27:49,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-12 15:27:49,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-12 15:27:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-12 15:27:49,130 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:49,130 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:49,142 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:49,330 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:49,330 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:49,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1882782040, now seen corresponding path program 70 times [2024-09-12 15:27:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:49,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309664277] [2024-09-12 15:27:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:27:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:27:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:27:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:27:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:27:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:27:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:27:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:27:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:27:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:27:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:27:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:27:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:27:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:27:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:27:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:27:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:27:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:27:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:27:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:27:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:27:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:27:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:27:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:27:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:27:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:27:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:27:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:27:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:27:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:27:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:27:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:27:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:27:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:27:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:27:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309664277] [2024-09-12 15:27:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309664277] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891023187] [2024-09-12 15:27:50,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:27:50,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:50,325 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) [2024-09-12 15:27:50,325 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-12 15:27:50,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:27:50,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:50,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-12 15:27:50,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:50,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-12 15:27:51,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891023187] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:51,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:51,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-12 15:27:51,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814451176] [2024-09-12 15:27:51,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:51,398 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 15:27:51,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 15:27:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 15:27:51,399 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:51,599 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-12 15:27:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 15:27:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-12 15:27:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:51,601 INFO L225 Difference]: With dead ends: 309 [2024-09-12 15:27:51,601 INFO L226 Difference]: Without dead ends: 307 [2024-09-12 15:27:51,601 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 15:27:51,602 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:51,602 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:27:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-12 15:27:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-12 15:27:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-12 15:27:51,622 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-12 15:27:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:51,622 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-12 15:27:51,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 15:27:51,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-12 15:27:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-12 15:27:51,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:51,623 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:51,637 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:51,824 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:51,824 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:51,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1885880117, now seen corresponding path program 71 times [2024-09-12 15:27:51,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:51,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035338742] [2024-09-12 15:27:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:51,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 15:27:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:27:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:27:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:27:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:27:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:27:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:27:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:27:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:27:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:27:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:27:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:27:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:27:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:27:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:27:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:27:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:27:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:27:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:27:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:27:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:27:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:27:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:27:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:27:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:27:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:27:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:27:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:27:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:27:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:27:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:27:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:27:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:27:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:27:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:27:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:27:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 1928 proven. 772 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035338742] [2024-09-12 15:27:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035338742] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:53,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122531817] [2024-09-12 15:27:53,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:27:53,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:53,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:53,586 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) [2024-09-12 15:27:53,586 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-12 15:27:53,695 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-12 15:27:53,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:53,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-12 15:27:53,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:55,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:56,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122531817] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:56,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:56,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 116 [2024-09-12 15:27:56,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119683359] [2024-09-12 15:27:56,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:56,649 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-12 15:27:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-12 15:27:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-09-12 15:27:56,651 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-09-12 15:27:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:57,018 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-12 15:27:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-12 15:27:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 300 [2024-09-12 15:27:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:57,020 INFO L225 Difference]: With dead ends: 423 [2024-09-12 15:27:57,020 INFO L226 Difference]: Without dead ends: 304 [2024-09-12 15:27:57,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 563 SyntacticMatches, 73 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8676 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-09-12 15:27:57,021 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:57,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 681 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:27:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-12 15:27:57,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-12 15:27:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:27:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-12 15:27:57,040 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-12 15:27:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:57,041 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-12 15:27:57,041 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-09-12 15:27:57,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-12 15:27:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-12 15:27:57,042 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:57,042 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:57,055 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-12 15:27:57,242 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:57,242 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:57,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1880741417, now seen corresponding path program 72 times [2024-09-12 15:27:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:57,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675429562] [2024-09-12 15:27:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:27:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:27:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:27:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:27:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:27:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:27:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:27:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:27:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:27:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:27:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:27:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:27:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:27:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:27:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:27:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:27:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:27:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:27:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:27:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:27:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:27:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:27:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:27:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:27:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:27:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:27:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:27:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:27:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:27:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:27:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:27:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:27:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:27:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:27:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:27:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:27:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:27:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:27:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:27:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675429562] [2024-09-12 15:27:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675429562] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:27:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647797298] [2024-09-12 15:27:58,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:27:58,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:58,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:27:58,281 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) [2024-09-12 15:27:58,282 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-12 15:27:58,396 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-12 15:27:58,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:27:58,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 15:27:58,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:27:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:58,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:27:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-12 15:27:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647797298] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:27:59,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:27:59,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-12 15:27:59,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040190566] [2024-09-12 15:27:59,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:27:59,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 15:27:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:27:59,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 15:27:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 15:27:59,492 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:27:59,673 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-12 15:27:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-12 15:27:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-09-12 15:27:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:27:59,675 INFO L225 Difference]: With dead ends: 317 [2024-09-12 15:27:59,675 INFO L226 Difference]: Without dead ends: 315 [2024-09-12 15:27:59,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 15:27:59,675 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:27:59,675 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:27:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-12 15:27:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-12 15:27:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:27:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-12 15:27:59,695 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-12 15:27:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:27:59,695 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-12 15:27:59,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 15:27:59,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-12 15:27:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-12 15:27:59,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:27:59,696 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:27:59,709 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-09-12 15:27:59,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:27:59,896 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:27:59,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:27:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1536568468, now seen corresponding path program 73 times [2024-09-12 15:27:59,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:27:59,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659924332] [2024-09-12 15:27:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:27:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:27:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 15:28:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:28:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:28:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:28:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:28:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:28:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:28:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:28:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:28:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:28:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:28:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:28:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:28:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:28:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:28:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:28:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:28:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:28:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:28:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:28:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:28:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:28:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:28:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:28:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:28:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:28:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:28:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:28:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:28:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:28:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:28:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:28:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:28:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:28:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:28:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:28:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:28:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2037 proven. 812 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:28:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659924332] [2024-09-12 15:28:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659924332] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211841078] [2024-09-12 15:28:01,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:28:01,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:01,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:01,799 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) [2024-09-12 15:28:01,800 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-12 15:28:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:01,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-12 15:28:01,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:28:03,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:28:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211841078] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:04,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 119 [2024-09-12 15:28:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809436491] [2024-09-12 15:28:04,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:04,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-09-12 15:28:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-09-12 15:28:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-09-12 15:28:04,949 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-12 15:28:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:05,372 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-12 15:28:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-12 15:28:05,373 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 308 [2024-09-12 15:28:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:05,374 INFO L225 Difference]: With dead ends: 434 [2024-09-12 15:28:05,374 INFO L226 Difference]: Without dead ends: 312 [2024-09-12 15:28:05,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 578 SyntacticMatches, 75 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-09-12 15:28:05,375 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:05,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:28:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-12 15:28:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-12 15:28:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:28:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-12 15:28:05,396 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-12 15:28:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:05,396 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-12 15:28:05,396 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-12 15:28:05,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-12 15:28:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-12 15:28:05,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:05,398 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:05,412 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:05,598 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:05,598 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:05,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2071228536, now seen corresponding path program 74 times [2024-09-12 15:28:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272952128] [2024-09-12 15:28:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:28:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:28:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:28:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:28:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:28:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:28:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:28:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:28:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:28:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:28:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:28:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:28:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:28:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:28:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:28:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:28:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:28:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:28:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:28:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:28:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:28:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:28:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:28:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:28:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:28:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:28:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:28:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:28:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:28:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:28:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:28:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:28:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:28:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:28:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:28:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:28:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:28:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:28:06,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:06,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272952128] [2024-09-12 15:28:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272952128] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:06,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528719673] [2024-09-12 15:28:06,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:28:06,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:06,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:06,717 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) [2024-09-12 15:28:06,718 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-12 15:28:06,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:28:06,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:06,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-12 15:28:06,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:28:06,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-12 15:28:07,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528719673] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:07,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:07,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-12 15:28:07,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861092945] [2024-09-12 15:28:07,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:07,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 15:28:07,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 15:28:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 15:28:07,910 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:28:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:08,113 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-12 15:28:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-12 15:28:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-12 15:28:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:08,116 INFO L225 Difference]: With dead ends: 325 [2024-09-12 15:28:08,116 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 15:28:08,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 15:28:08,116 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:08,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 15:28:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-12 15:28:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:28:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-12 15:28:08,136 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-12 15:28:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:08,137 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-12 15:28:08,137 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-12 15:28:08,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-12 15:28:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-12 15:28:08,138 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:08,138 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:08,151 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-09-12 15:28:08,338 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:08,338 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:08,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash 603850155, now seen corresponding path program 75 times [2024-09-12 15:28:08,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:08,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944595082] [2024-09-12 15:28:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 15:28:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:28:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:28:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:28:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:28:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:28:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:28:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:28:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:28:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:28:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:28:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:28:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:28:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:28:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:28:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:28:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:28:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:28:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:28:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:28:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:28:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:28:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:28:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:28:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:28:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:28:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:28:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:28:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:28:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:28:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:28:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:28:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:28:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:28:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:28:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:28:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:28:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:28:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2149 proven. 853 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:28:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944595082] [2024-09-12 15:28:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944595082] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504764990] [2024-09-12 15:28:10,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:28:10,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:10,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:10,296 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) [2024-09-12 15:28:10,297 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-12 15:28:10,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-12 15:28:10,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:10,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 15:28:10,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:28:12,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:28:13,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504764990] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:13,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:13,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 122 [2024-09-12 15:28:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29722974] [2024-09-12 15:28:13,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:13,614 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-09-12 15:28:13,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-09-12 15:28:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-09-12 15:28:13,615 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-09-12 15:28:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:14,117 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-12 15:28:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-12 15:28:14,117 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 316 [2024-09-12 15:28:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:14,119 INFO L225 Difference]: With dead ends: 445 [2024-09-12 15:28:14,119 INFO L226 Difference]: Without dead ends: 320 [2024-09-12 15:28:14,120 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 593 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9614 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-09-12 15:28:14,120 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:14,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 930 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:28:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-12 15:28:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-12 15:28:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:28:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-12 15:28:14,141 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-12 15:28:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:14,141 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-12 15:28:14,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-09-12 15:28:14,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-12 15:28:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-12 15:28:14,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:14,142 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:14,154 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-12 15:28:14,342 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-12 15:28:14,342 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:14,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1011930807, now seen corresponding path program 76 times [2024-09-12 15:28:14,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:14,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897466981] [2024-09-12 15:28:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:28:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:28:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:28:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:28:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:28:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:28:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:28:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:28:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:28:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:28:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:28:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:28:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:28:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:28:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:28:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:28:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:28:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:28:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:28:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:28:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:28:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:28:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:28:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:28:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:28:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:28:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:28:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:28:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:28:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:28:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:28:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:28:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:28:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:28:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:28:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:28:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:28:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:28:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:28:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897466981] [2024-09-12 15:28:15,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897466981] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157350297] [2024-09-12 15:28:15,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:28:15,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:15,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:15,562 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) [2024-09-12 15:28:15,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-12 15:28:15,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:28:15,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:15,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 15:28:15,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:28:15,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-12 15:28:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157350297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:16,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-12 15:28:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853627956] [2024-09-12 15:28:16,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:16,845 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 15:28:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 15:28:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 15:28:16,846 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:28:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:17,062 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-12 15:28:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 15:28:17,062 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-09-12 15:28:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:17,064 INFO L225 Difference]: With dead ends: 333 [2024-09-12 15:28:17,064 INFO L226 Difference]: Without dead ends: 331 [2024-09-12 15:28:17,064 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 15:28:17,064 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:17,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 160 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-12 15:28:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-12 15:28:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:28:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-12 15:28:17,086 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-12 15:28:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:17,087 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-12 15:28:17,087 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 15:28:17,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-12 15:28:17,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-12 15:28:17,088 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:17,088 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:17,101 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-12 15:28:17,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-12 15:28:17,289 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:17,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1005382284, now seen corresponding path program 77 times [2024-09-12 15:28:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969257189] [2024-09-12 15:28:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 15:28:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:28:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:28:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:28:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:28:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:28:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:28:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:28:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:28:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:28:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:28:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:28:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:28:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:28:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:28:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:28:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:28:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:28:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:28:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:28:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:28:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:28:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:28:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:28:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:28:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:28:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:28:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:28:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:28:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:28:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:28:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:28:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:28:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:28:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:28:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:28:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:28:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:28:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 15:28:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2264 proven. 895 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:28:19,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:19,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969257189] [2024-09-12 15:28:19,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969257189] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:19,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475035703] [2024-09-12 15:28:19,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:28:19,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:19,388 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) [2024-09-12 15:28:19,389 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-12 15:28:19,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-12 15:28:19,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:19,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-12 15:28:19,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:28:21,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:28:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475035703] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:22,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:22,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 125 [2024-09-12 15:28:22,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931441163] [2024-09-12 15:28:22,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:22,846 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-12 15:28:22,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-12 15:28:22,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-09-12 15:28:22,848 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-09-12 15:28:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:23,369 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-12 15:28:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-12 15:28:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 324 [2024-09-12 15:28:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:23,371 INFO L225 Difference]: With dead ends: 456 [2024-09-12 15:28:23,371 INFO L226 Difference]: Without dead ends: 328 [2024-09-12 15:28:23,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 608 SyntacticMatches, 79 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10101 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-09-12 15:28:23,372 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:23,372 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:28:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-12 15:28:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-12 15:28:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:28:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-12 15:28:23,393 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-12 15:28:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:23,393 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-12 15:28:23,393 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-09-12 15:28:23,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-12 15:28:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-12 15:28:23,394 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:23,395 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:23,407 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:23,595 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:23,595 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:23,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1273761896, now seen corresponding path program 78 times [2024-09-12 15:28:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247052014] [2024-09-12 15:28:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:28:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:28:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:28:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:28:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:28:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:28:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:28:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:28:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:28:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:28:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:28:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:28:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:28:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:28:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:28:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:28:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:28:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:28:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:28:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:28:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:28:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:28:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:28:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:28:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:28:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:28:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:28:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:28:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:28:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:28:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:28:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:28:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:28:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:28:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:28:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:28:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:28:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:28:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:28:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:28:24,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247052014] [2024-09-12 15:28:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247052014] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201123138] [2024-09-12 15:28:24,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:28:24,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:24,850 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) [2024-09-12 15:28:24,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-12 15:28:25,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-12 15:28:25,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:25,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-12 15:28:25,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:28:25,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-12 15:28:26,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201123138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:26,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:26,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-12 15:28:26,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364426749] [2024-09-12 15:28:26,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:26,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 15:28:26,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 15:28:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 15:28:26,338 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:28:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:26,523 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-12 15:28:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-12 15:28:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-12 15:28:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:26,526 INFO L225 Difference]: With dead ends: 341 [2024-09-12 15:28:26,526 INFO L226 Difference]: Without dead ends: 339 [2024-09-12 15:28:26,526 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 15:28:26,526 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:26,526 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:28:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-12 15:28:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-12 15:28:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:28:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-12 15:28:26,550 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-12 15:28:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:26,550 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-12 15:28:26,551 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 15:28:26,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-12 15:28:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-12 15:28:26,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:26,552 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:26,569 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:26,752 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:26,753 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2078753419, now seen corresponding path program 79 times [2024-09-12 15:28:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581001691] [2024-09-12 15:28:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 15:28:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:28:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:28:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:28:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:28:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:28:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:28:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:28:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:28:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:28:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:28:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:28:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:28:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:28:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:28:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:28:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:28:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:28:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:28:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:28:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:28:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:28:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:28:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:28:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:28:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:28:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:28:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:28:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:28:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:28:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:28:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:28:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:28:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:28:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:28:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:28:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:28:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:28:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:28:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 15:28:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2382 proven. 938 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:28:28,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581001691] [2024-09-12 15:28:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581001691] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:28,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625679826] [2024-09-12 15:28:28,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:28:28,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:28,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:28,962 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) [2024-09-12 15:28:28,963 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-12 15:28:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:29,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 15:28:29,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:28:31,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:28:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625679826] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:32,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:32,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 128 [2024-09-12 15:28:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536153880] [2024-09-12 15:28:32,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:32,565 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-09-12 15:28:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-09-12 15:28:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-09-12 15:28:32,567 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-12 15:28:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:33,031 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-12 15:28:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-12 15:28:33,032 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 332 [2024-09-12 15:28:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:33,034 INFO L225 Difference]: With dead ends: 467 [2024-09-12 15:28:33,034 INFO L226 Difference]: Without dead ends: 336 [2024-09-12 15:28:33,035 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 623 SyntacticMatches, 81 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-09-12 15:28:33,035 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:33,035 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 793 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:28:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-12 15:28:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-12 15:28:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:28:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-12 15:28:33,066 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-12 15:28:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:33,066 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-12 15:28:33,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-12 15:28:33,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-12 15:28:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-12 15:28:33,068 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:33,068 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:33,082 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-09-12 15:28:33,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:33,268 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:33,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 644774807, now seen corresponding path program 80 times [2024-09-12 15:28:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954029665] [2024-09-12 15:28:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:28:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:28:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:28:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:28:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:28:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:28:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:28:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:28:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:28:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:28:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:28:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:28:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:28:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:28:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:28:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:28:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:28:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:28:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:28:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:28:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:28:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:28:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:28:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:28:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:28:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:28:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:28:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:28:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:28:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:28:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:28:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:28:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:28:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:28:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:28:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:28:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:28:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:28:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:28:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:28:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:28:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954029665] [2024-09-12 15:28:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954029665] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253115458] [2024-09-12 15:28:34,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:28:34,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:34,540 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) [2024-09-12 15:28:34,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-12 15:28:34,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:28:34,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:34,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-12 15:28:34,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:28:34,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-12 15:28:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253115458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:35,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:35,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-12 15:28:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785931311] [2024-09-12 15:28:35,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:35,872 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 15:28:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 15:28:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 15:28:35,873 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:28:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:36,081 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-12 15:28:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 15:28:36,082 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-12 15:28:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:36,083 INFO L225 Difference]: With dead ends: 349 [2024-09-12 15:28:36,083 INFO L226 Difference]: Without dead ends: 347 [2024-09-12 15:28:36,084 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:28:36,084 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:36,084 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 155 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-12 15:28:36,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-12 15:28:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:28:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-12 15:28:36,107 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-12 15:28:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:36,107 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-12 15:28:36,107 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 15:28:36,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-12 15:28:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-12 15:28:36,108 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:36,108 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:36,120 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:36,309 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-12 15:28:36,309 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:36,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:36,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1291192748, now seen corresponding path program 81 times [2024-09-12 15:28:36,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:36,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281575296] [2024-09-12 15:28:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:36,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 15:28:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:28:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:28:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:28:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:28:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:28:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:28:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:28:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:28:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:28:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:28:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:28:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:28:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:28:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:28:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:28:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:28:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:28:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:28:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:28:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:28:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:28:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:28:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:28:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:28:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:28:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:28:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:28:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:28:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:28:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:28:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:28:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:28:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:28:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:28:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:28:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:28:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:28:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:28:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:28:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 15:28:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2503 proven. 982 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:28:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281575296] [2024-09-12 15:28:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281575296] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070254335] [2024-09-12 15:28:38,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:28:38,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:38,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:38,576 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) [2024-09-12 15:28:38,577 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-12 15:28:38,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-12 15:28:38,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:38,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-12 15:28:38,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:28:40,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:28:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070254335] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:42,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:42,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 131 [2024-09-12 15:28:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224119797] [2024-09-12 15:28:42,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:42,300 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-12 15:28:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:42,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-12 15:28:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-09-12 15:28:42,302 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-12 15:28:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:42,884 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-12 15:28:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-12 15:28:42,884 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 340 [2024-09-12 15:28:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:42,886 INFO L225 Difference]: With dead ends: 478 [2024-09-12 15:28:42,886 INFO L226 Difference]: Without dead ends: 344 [2024-09-12 15:28:42,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 638 SyntacticMatches, 83 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11111 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-09-12 15:28:42,888 INFO L434 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:42,888 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 936 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:28:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-12 15:28:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-12 15:28:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:28:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-12 15:28:42,912 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-12 15:28:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:42,912 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-12 15:28:42,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-12 15:28:42,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-12 15:28:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-12 15:28:42,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:42,914 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:42,927 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-12 15:28:43,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:43,114 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:43,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1335265608, now seen corresponding path program 82 times [2024-09-12 15:28:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264181695] [2024-09-12 15:28:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:28:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:28:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:28:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:28:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:28:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:28:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:28:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:28:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:28:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:28:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:28:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:28:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:28:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:28:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:28:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:28:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:28:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:28:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:28:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:28:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:28:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:28:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:28:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:28:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:28:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:28:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:28:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:28:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:28:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:28:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:28:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:28:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:28:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:28:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-12 15:28:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 15:28:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-12 15:28:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 15:28:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-12 15:28:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 15:28:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-12 15:28:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:28:44,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:44,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264181695] [2024-09-12 15:28:44,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264181695] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:44,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495156410] [2024-09-12 15:28:44,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:28:44,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:44,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:44,471 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) [2024-09-12 15:28:44,471 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-12 15:28:44,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:28:44,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:44,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-12 15:28:44,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:28:44,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-12 15:28:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495156410] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:45,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-12 15:28:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111544757] [2024-09-12 15:28:45,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:45,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 15:28:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 15:28:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 15:28:45,822 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:28:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:46,015 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-12 15:28:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 15:28:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-12 15:28:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:46,017 INFO L225 Difference]: With dead ends: 357 [2024-09-12 15:28:46,017 INFO L226 Difference]: Without dead ends: 355 [2024-09-12 15:28:46,017 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 15:28:46,018 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:46,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 128 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 15:28:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-12 15:28:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-12 15:28:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:28:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-12 15:28:46,047 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-12 15:28:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:46,047 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-12 15:28:46,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 15:28:46,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-12 15:28:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-12 15:28:46,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:46,049 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:46,062 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:46,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:46,249 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:46,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1597933717, now seen corresponding path program 83 times [2024-09-12 15:28:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630880017] [2024-09-12 15:28:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 15:28:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 15:28:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 15:28:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 15:28:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 15:28:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 15:28:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 15:28:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 15:28:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 15:28:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 15:28:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 15:28:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 15:28:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 15:28:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 15:28:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 15:28:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 15:28:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 15:28:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 15:28:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-12 15:28:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 15:28:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 15:28:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-12 15:28:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 15:28:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 15:28:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-12 15:28:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-12 15:28:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-12 15:28:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-12 15:28:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-12 15:28:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-12 15:28:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 15:28:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-12 15:28:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-12 15:28:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-12 15:28:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-12 15:28:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-12 15:28:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-12 15:28:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-12 15:28:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-12 15:28:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-12 15:28:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-12 15:28:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-12 15:28:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2627 proven. 1027 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:48,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630880017] [2024-09-12 15:28:48,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630880017] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:48,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257411783] [2024-09-12 15:28:48,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:28:48,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:48,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:48,663 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) [2024-09-12 15:28:48,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-12 15:28:48,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-12 15:28:48,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:48,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-12 15:28:48,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:50,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:52,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257411783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:52,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 134 [2024-09-12 15:28:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792631589] [2024-09-12 15:28:52,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:52,600 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-12 15:28:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-12 15:28:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-09-12 15:28:52,602 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-09-12 15:28:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:53,311 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-12 15:28:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-12 15:28:53,311 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Word has length 348 [2024-09-12 15:28:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:53,313 INFO L225 Difference]: With dead ends: 489 [2024-09-12 15:28:53,313 INFO L226 Difference]: Without dead ends: 352 [2024-09-12 15:28:53,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 653 SyntacticMatches, 85 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11634 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-09-12 15:28:53,314 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:53,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1243 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 15:28:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-12 15:28:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-12 15:28:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:28:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-12 15:28:53,348 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-12 15:28:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:53,348 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-12 15:28:53,348 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-09-12 15:28:53,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-12 15:28:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-12 15:28:53,349 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:53,349 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:53,362 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-09-12 15:28:53,549 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:53,550 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:53,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash -139650953, now seen corresponding path program 84 times [2024-09-12 15:28:53,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616536367] [2024-09-12 15:28:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:53,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:28:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:28:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:28:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:28:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:28:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:28:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:28:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:28:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:28:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:28:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:28:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:28:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:28:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:28:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:28:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:28:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:28:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:28:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:28:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:28:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:28:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:28:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:28:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:28:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:28:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:28:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:28:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:28:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:28:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:28:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:28:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:28:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:28:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:28:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:28:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-12 15:28:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 15:28:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-12 15:28:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 15:28:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-12 15:28:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 15:28:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-12 15:28:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:54,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616536367] [2024-09-12 15:28:54,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616536367] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504156374] [2024-09-12 15:28:54,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:28:54,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:54,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:54,984 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) [2024-09-12 15:28:54,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-12 15:28:55,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-12 15:28:55,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:28:55,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-12 15:28:55,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:28:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:55,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:28:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-12 15:28:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504156374] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:28:56,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:28:56,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-12 15:28:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097847452] [2024-09-12 15:28:56,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:28:56,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 15:28:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:28:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 15:28:56,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 15:28:56,445 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:28:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:28:56,659 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-12 15:28:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-12 15:28:56,660 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-12 15:28:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:28:56,662 INFO L225 Difference]: With dead ends: 365 [2024-09-12 15:28:56,662 INFO L226 Difference]: Without dead ends: 363 [2024-09-12 15:28:56,662 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 15:28:56,662 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:28:56,662 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:28:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-12 15:28:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-12 15:28:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:28:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-12 15:28:56,699 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-12 15:28:56,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:28:56,699 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-12 15:28:56,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 15:28:56,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-12 15:28:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-12 15:28:56,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:28:56,701 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:28:56,714 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-12 15:28:56,901 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:56,901 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:28:56,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:28:56,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1448554700, now seen corresponding path program 85 times [2024-09-12 15:28:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:28:56,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635913264] [2024-09-12 15:28:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:28:56,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:28:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:28:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 15:28:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 15:28:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 15:28:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 15:28:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 15:28:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 15:28:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 15:28:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 15:28:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 15:28:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 15:28:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 15:28:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 15:28:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 15:28:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 15:28:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 15:28:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 15:28:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 15:28:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 15:28:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 15:28:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-12 15:28:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-12 15:28:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 15:28:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-12 15:28:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-12 15:28:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 15:28:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-12 15:28:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-12 15:28:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-12 15:28:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 15:28:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-12 15:28:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-12 15:28:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-12 15:28:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-12 15:28:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-12 15:28:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-12 15:28:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-12 15:28:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-12 15:28:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-12 15:28:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-12 15:28:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-12 15:28:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-12 15:28:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-12 15:28:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-12 15:28:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2754 proven. 1073 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:28:59,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:28:59,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635913264] [2024-09-12 15:28:59,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635913264] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:28:59,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455185642] [2024-09-12 15:28:59,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:28:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:28:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:28:59,410 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) [2024-09-12 15:28:59,411 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-12 15:28:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:28:59,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-12 15:28:59,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:29:01,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:29:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455185642] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:03,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:03,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 137 [2024-09-12 15:29:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99392701] [2024-09-12 15:29:03,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:03,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-09-12 15:29:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-09-12 15:29:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-09-12 15:29:03,452 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-12 15:29:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:03,924 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-12 15:29:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-12 15:29:03,925 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Word has length 356 [2024-09-12 15:29:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:03,934 INFO L225 Difference]: With dead ends: 500 [2024-09-12 15:29:03,934 INFO L226 Difference]: Without dead ends: 360 [2024-09-12 15:29:03,935 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 668 SyntacticMatches, 87 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12169 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-09-12 15:29:03,935 INFO L434 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:03,935 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 501 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 15:29:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-12 15:29:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-12 15:29:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:29:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-12 15:29:03,960 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-12 15:29:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:03,960 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-12 15:29:03,960 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-12 15:29:03,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-12 15:29:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-12 15:29:03,962 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:03,962 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:03,975 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:04,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-12 15:29:04,162 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:04,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1891170856, now seen corresponding path program 86 times [2024-09-12 15:29:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855070790] [2024-09-12 15:29:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:29:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:29:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:29:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:29:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:29:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:29:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:29:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:29:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:29:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:29:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:29:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:29:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:29:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:29:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:29:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:29:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:29:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:29:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:29:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:29:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:29:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:29:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:29:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:29:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:29:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:29:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:29:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:29:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:29:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:29:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:29:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:29:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:29:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:29:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:29:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:29:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-12 15:29:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 15:29:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-12 15:29:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 15:29:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-12 15:29:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 15:29:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-12 15:29:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:29:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855070790] [2024-09-12 15:29:05,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855070790] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860164993] [2024-09-12 15:29:05,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:29:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:05,717 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) [2024-09-12 15:29:05,718 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-12 15:29:05,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:29:05,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:05,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-12 15:29:05,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:29:06,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-12 15:29:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860164993] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:07,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:07,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-12 15:29:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178523072] [2024-09-12 15:29:07,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:07,328 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-12 15:29:07,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-12 15:29:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 15:29:07,329 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:29:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:07,560 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-12 15:29:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-12 15:29:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-09-12 15:29:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:07,562 INFO L225 Difference]: With dead ends: 373 [2024-09-12 15:29:07,562 INFO L226 Difference]: Without dead ends: 371 [2024-09-12 15:29:07,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 15:29:07,563 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:07,563 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-12 15:29:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-12 15:29:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:29:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-12 15:29:07,588 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-12 15:29:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:07,589 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-12 15:29:07,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 15:29:07,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-12 15:29:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-12 15:29:07,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:07,590 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:07,603 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-09-12 15:29:07,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-12 15:29:07,791 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:07,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2089114549, now seen corresponding path program 87 times [2024-09-12 15:29:07,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403255040] [2024-09-12 15:29:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 15:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 15:29:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 15:29:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 15:29:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 15:29:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 15:29:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 15:29:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 15:29:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 15:29:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 15:29:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 15:29:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 15:29:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 15:29:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 15:29:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 15:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 15:29:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 15:29:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 15:29:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-12 15:29:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 15:29:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 15:29:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-12 15:29:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 15:29:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-12 15:29:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-12 15:29:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-12 15:29:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 15:29:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-12 15:29:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-12 15:29:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 15:29:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-12 15:29:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-12 15:29:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-12 15:29:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-12 15:29:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-12 15:29:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-12 15:29:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-12 15:29:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-12 15:29:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-12 15:29:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 15:29:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-12 15:29:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-12 15:29:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-12 15:29:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-12 15:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2884 proven. 1120 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:29:10,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:10,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403255040] [2024-09-12 15:29:10,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403255040] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:10,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345823008] [2024-09-12 15:29:10,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:29:10,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:10,357 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) [2024-09-12 15:29:10,358 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-12 15:29:10,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-12 15:29:10,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:10,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-12 15:29:10,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:29:12,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:29:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345823008] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:14,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 140 [2024-09-12 15:29:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521858615] [2024-09-12 15:29:14,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:14,603 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-09-12 15:29:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-09-12 15:29:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-09-12 15:29:14,605 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 140 states, 140 states have (on average 1.7) internal successors, (238), 140 states have internal predecessors, (238), 91 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-09-12 15:29:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:15,168 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-12 15:29:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-12 15:29:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.7) internal successors, (238), 140 states have internal predecessors, (238), 91 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Word has length 364 [2024-09-12 15:29:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:15,170 INFO L225 Difference]: With dead ends: 511 [2024-09-12 15:29:15,171 INFO L226 Difference]: Without dead ends: 368 [2024-09-12 15:29:15,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 683 SyntacticMatches, 89 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12716 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-09-12 15:29:15,172 INFO L434 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:15,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1055 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-12 15:29:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-12 15:29:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:29:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-12 15:29:15,208 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-12 15:29:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:15,208 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-12 15:29:15,209 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 1.7) internal successors, (238), 140 states have internal predecessors, (238), 91 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-09-12 15:29:15,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-12 15:29:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-12 15:29:15,210 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:15,210 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:15,223 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-12 15:29:15,410 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:15,411 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:15,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1090170199, now seen corresponding path program 88 times [2024-09-12 15:29:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:15,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733350102] [2024-09-12 15:29:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:29:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:29:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:29:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:29:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:29:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:29:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:29:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:29:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:29:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:29:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:29:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:29:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:29:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:29:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:29:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:29:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:29:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:29:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:29:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:29:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:29:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:29:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:29:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:29:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:29:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:29:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:29:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:29:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:29:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:29:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:29:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:29:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:29:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:29:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:29:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:29:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:29:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-12 15:29:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 15:29:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-12 15:29:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 15:29:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 15:29:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 15:29:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-12 15:29:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:29:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733350102] [2024-09-12 15:29:16,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733350102] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185788685] [2024-09-12 15:29:16,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:29:16,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:16,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:16,940 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) [2024-09-12 15:29:16,941 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-12 15:29:17,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:29:17,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:17,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 15:29:17,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:29:17,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-12 15:29:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185788685] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:18,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:18,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-12 15:29:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964998795] [2024-09-12 15:29:18,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:18,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 15:29:18,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 15:29:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 15:29:18,471 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:29:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:18,704 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-12 15:29:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 15:29:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2024-09-12 15:29:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:18,706 INFO L225 Difference]: With dead ends: 381 [2024-09-12 15:29:18,706 INFO L226 Difference]: Without dead ends: 379 [2024-09-12 15:29:18,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 15:29:18,706 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:18,707 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-12 15:29:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-12 15:29:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:29:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-12 15:29:18,732 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-12 15:29:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:18,733 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-12 15:29:18,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 15:29:18,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-12 15:29:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-12 15:29:18,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:18,734 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:18,747 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:18,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:18,934 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:18,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2137153516, now seen corresponding path program 89 times [2024-09-12 15:29:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:18,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556760830] [2024-09-12 15:29:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:18,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 15:29:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 15:29:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 15:29:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 15:29:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 15:29:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 15:29:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 15:29:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 15:29:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 15:29:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 15:29:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 15:29:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 15:29:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 15:29:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 15:29:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 15:29:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 15:29:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 15:29:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 15:29:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 15:29:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-12 15:29:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 15:29:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 15:29:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-12 15:29:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-12 15:29:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 15:29:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-12 15:29:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-12 15:29:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 15:29:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-12 15:29:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 15:29:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-12 15:29:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-12 15:29:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-12 15:29:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-12 15:29:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-12 15:29:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-12 15:29:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-12 15:29:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-12 15:29:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-12 15:29:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-12 15:29:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-12 15:29:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 15:29:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-12 15:29:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-12 15:29:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-12 15:29:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3017 proven. 1168 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:29:21,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556760830] [2024-09-12 15:29:21,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556760830] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384215981] [2024-09-12 15:29:21,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:29:21,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:21,645 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) [2024-09-12 15:29:21,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-12 15:29:21,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-12 15:29:21,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:21,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 15:29:21,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:29:24,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:29:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384215981] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:26,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 143 [2024-09-12 15:29:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708990439] [2024-09-12 15:29:26,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:26,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-09-12 15:29:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-09-12 15:29:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2024-09-12 15:29:26,047 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 143 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 143 states have internal predecessors, (243), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-12 15:29:26,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:26,683 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-12 15:29:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-12 15:29:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 143 states have internal predecessors, (243), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 372 [2024-09-12 15:29:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:26,685 INFO L225 Difference]: With dead ends: 522 [2024-09-12 15:29:26,685 INFO L226 Difference]: Without dead ends: 376 [2024-09-12 15:29:26,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 698 SyntacticMatches, 91 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13275 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2024-09-12 15:29:26,687 INFO L434 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:26,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1123 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-12 15:29:26,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-12 15:29:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:29:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-12 15:29:26,713 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-12 15:29:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:26,713 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-12 15:29:26,713 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 143 states have internal predecessors, (243), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-12 15:29:26,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-12 15:29:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-12 15:29:26,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:26,714 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:26,728 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:26,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:26,915 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:26,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash 402562296, now seen corresponding path program 90 times [2024-09-12 15:29:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524874110] [2024-09-12 15:29:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:29:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:29:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:29:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:29:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:29:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:29:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:29:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:29:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:29:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:29:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:29:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:29:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:29:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:29:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:29:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:29:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:29:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:29:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:29:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:29:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:29:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:29:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:29:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:29:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:29:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:29:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:29:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:29:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:29:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:29:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:29:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:29:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:29:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:29:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:29:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:29:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:29:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 15:29:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-12 15:29:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 15:29:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-12 15:29:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 15:29:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-12 15:29:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 15:29:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-12 15:29:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:29:28,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:28,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524874110] [2024-09-12 15:29:28,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524874110] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:28,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459131079] [2024-09-12 15:29:28,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 15:29:28,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:28,562 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) [2024-09-12 15:29:28,564 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-12 15:29:28,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-12 15:29:28,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:28,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-12 15:29:28,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:29:28,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-12 15:29:30,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459131079] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:30,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:30,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-12 15:29:30,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331880677] [2024-09-12 15:29:30,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:30,177 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 15:29:30,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 15:29:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 15:29:30,178 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:29:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:30,394 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-12 15:29:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 15:29:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-09-12 15:29:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:30,397 INFO L225 Difference]: With dead ends: 389 [2024-09-12 15:29:30,397 INFO L226 Difference]: Without dead ends: 387 [2024-09-12 15:29:30,397 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 15:29:30,397 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:30,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-12 15:29:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-12 15:29:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:29:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-12 15:29:30,425 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-12 15:29:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:30,425 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-12 15:29:30,425 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 15:29:30,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-12 15:29:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-12 15:29:30,426 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:30,426 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:30,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:30,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:30,627 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:30,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash -595539669, now seen corresponding path program 91 times [2024-09-12 15:29:30,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:30,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604367425] [2024-09-12 15:29:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 15:29:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 15:29:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 15:29:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 15:29:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 15:29:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 15:29:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 15:29:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 15:29:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 15:29:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 15:29:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 15:29:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 15:29:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 15:29:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 15:29:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 15:29:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 15:29:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 15:29:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 15:29:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 15:29:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 15:29:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 15:29:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 15:29:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 15:29:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-12 15:29:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-12 15:29:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 15:29:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-12 15:29:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-12 15:29:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-12 15:29:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-12 15:29:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-12 15:29:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-12 15:29:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-12 15:29:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-12 15:29:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-12 15:29:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-12 15:29:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 15:29:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-12 15:29:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-12 15:29:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-12 15:29:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-12 15:29:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-12 15:29:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-12 15:29:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-12 15:29:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-12 15:29:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-12 15:29:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3153 proven. 1217 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:29:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604367425] [2024-09-12 15:29:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604367425] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992061492] [2024-09-12 15:29:33,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 15:29:33,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:33,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:33,457 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) [2024-09-12 15:29:33,457 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-12 15:29:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:33,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 15:29:33,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:29:35,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:29:37,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992061492] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:37,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 146 [2024-09-12 15:29:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360268321] [2024-09-12 15:29:37,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:37,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-12 15:29:37,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-12 15:29:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-09-12 15:29:37,970 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 146 states, 146 states have (on average 1.6986301369863013) internal successors, (248), 146 states have internal predecessors, (248), 95 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-09-12 15:29:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:38,529 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-12 15:29:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-12 15:29:38,529 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.6986301369863013) internal successors, (248), 146 states have internal predecessors, (248), 95 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 380 [2024-09-12 15:29:38,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:38,531 INFO L225 Difference]: With dead ends: 533 [2024-09-12 15:29:38,532 INFO L226 Difference]: Without dead ends: 384 [2024-09-12 15:29:38,533 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 713 SyntacticMatches, 93 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13846 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-09-12 15:29:38,533 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:38,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 727 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-12 15:29:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-12 15:29:38,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:29:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-12 15:29:38,560 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-12 15:29:38,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:38,560 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-12 15:29:38,560 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.6986301369863013) internal successors, (248), 146 states have internal predecessors, (248), 95 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-09-12 15:29:38,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-12 15:29:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-12 15:29:38,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:38,562 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:38,574 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:38,762 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:38,762 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:38,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1522874935, now seen corresponding path program 92 times [2024-09-12 15:29:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992488060] [2024-09-12 15:29:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:29:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:29:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:29:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:29:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:29:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:29:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:29:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:29:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:29:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:29:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:29:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:29:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:29:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:29:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:29:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:29:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:29:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:29:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:29:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:29:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:29:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:29:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:29:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:29:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:29:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:29:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:29:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:29:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:29:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:29:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:29:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:29:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:29:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:29:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:29:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:29:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:29:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:29:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 15:29:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-12 15:29:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 15:29:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-12 15:29:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 15:29:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-12 15:29:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 15:29:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-12 15:29:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:29:40,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:40,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992488060] [2024-09-12 15:29:40,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992488060] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:40,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742172345] [2024-09-12 15:29:40,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 15:29:40,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:40,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:40,519 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) [2024-09-12 15:29:40,519 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-12 15:29:40,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 15:29:40,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:40,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-12 15:29:40,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:29:40,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-12 15:29:42,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742172345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:42,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:42,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-12 15:29:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113779233] [2024-09-12 15:29:42,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:42,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 15:29:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 15:29:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 15:29:42,223 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:29:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:42,447 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-12 15:29:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-12 15:29:42,447 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2024-09-12 15:29:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:42,449 INFO L225 Difference]: With dead ends: 397 [2024-09-12 15:29:42,449 INFO L226 Difference]: Without dead ends: 395 [2024-09-12 15:29:42,450 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:29:42,450 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:42,450 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-12 15:29:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-12 15:29:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:29:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-12 15:29:42,479 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-12 15:29:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:42,479 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-12 15:29:42,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 15:29:42,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-12 15:29:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-12 15:29:42,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:42,480 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:42,492 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-12 15:29:42,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:42,681 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:42,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1209428212, now seen corresponding path program 93 times [2024-09-12 15:29:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906882116] [2024-09-12 15:29:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:42,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 15:29:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 15:29:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 15:29:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 15:29:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 15:29:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 15:29:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 15:29:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 15:29:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 15:29:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 15:29:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 15:29:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 15:29:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 15:29:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 15:29:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 15:29:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 15:29:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 15:29:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 15:29:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 15:29:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 15:29:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 15:29:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 15:29:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-12 15:29:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 15:29:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-12 15:29:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-12 15:29:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 15:29:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-12 15:29:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-12 15:29:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-12 15:29:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-12 15:29:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 15:29:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-12 15:29:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-12 15:29:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-12 15:29:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-12 15:29:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-12 15:29:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-12 15:29:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-12 15:29:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-12 15:29:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-12 15:29:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-12 15:29:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-12 15:29:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-12 15:29:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-12 15:29:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-12 15:29:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-12 15:29:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3292 proven. 1267 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:29:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906882116] [2024-09-12 15:29:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906882116] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770933151] [2024-09-12 15:29:45,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 15:29:45,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:45,686 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) [2024-09-12 15:29:45,687 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-12 15:29:45,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-12 15:29:45,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:45,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-12 15:29:45,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:29:48,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:29:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770933151] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:50,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 149 [2024-09-12 15:29:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812750545] [2024-09-12 15:29:50,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:50,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-09-12 15:29:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-09-12 15:29:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-09-12 15:29:50,399 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 149 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 149 states have internal predecessors, (253), 97 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-09-12 15:29:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:51,013 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-12 15:29:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-12 15:29:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 149 states have internal predecessors, (253), 97 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Word has length 388 [2024-09-12 15:29:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:51,016 INFO L225 Difference]: With dead ends: 544 [2024-09-12 15:29:51,016 INFO L226 Difference]: Without dead ends: 392 [2024-09-12 15:29:51,018 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 728 SyntacticMatches, 95 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-09-12 15:29:51,018 INFO L434 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:51,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 905 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 15:29:51,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-12 15:29:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-12 15:29:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 15:29:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-12 15:29:51,048 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-12 15:29:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:51,048 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-12 15:29:51,049 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 149 states have internal predecessors, (253), 97 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-09-12 15:29:51,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-12 15:29:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-12 15:29:51,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:51,050 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:51,063 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-12 15:29:51,251 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:51,251 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:51,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -631096296, now seen corresponding path program 94 times [2024-09-12 15:29:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:51,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626573460] [2024-09-12 15:29:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:51,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:29:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:29:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:29:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:29:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:29:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:29:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:29:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:29:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:29:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:29:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:29:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:29:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:29:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:29:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:29:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:29:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:29:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:29:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:29:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:29:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:29:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:29:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:29:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:29:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:29:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:29:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:29:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:29:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:29:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:29:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:29:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:29:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:29:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:29:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:29:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:29:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:29:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:29:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:29:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 15:29:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-12 15:29:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 15:29:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-12 15:29:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 15:29:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-12 15:29:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 15:29:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-12 15:29:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:29:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626573460] [2024-09-12 15:29:52,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626573460] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484167989] [2024-09-12 15:29:52,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 15:29:52,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:52,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:52,981 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) [2024-09-12 15:29:52,982 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-12 15:29:53,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 15:29:53,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:53,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-12 15:29:53,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 15:29:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:29:53,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 15:29:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-12 15:29:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484167989] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 15:29:54,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 15:29:54,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-09-12 15:29:54,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820452157] [2024-09-12 15:29:54,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 15:29:54,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 15:29:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 15:29:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 15:29:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 15:29:54,691 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:29:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 15:29:54,928 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-09-12 15:29:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-12 15:29:54,928 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-09-12 15:29:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 15:29:54,930 INFO L225 Difference]: With dead ends: 405 [2024-09-12 15:29:54,930 INFO L226 Difference]: Without dead ends: 403 [2024-09-12 15:29:54,931 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 15:29:54,931 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 15:29:54,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 15:29:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-12 15:29:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-09-12 15:29:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 15:29:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-09-12 15:29:54,960 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-09-12 15:29:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 15:29:54,960 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-09-12 15:29:54,960 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 15:29:54,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-09-12 15:29:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-09-12 15:29:54,962 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 15:29:54,962 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 15:29:54,975 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2024-09-12 15:29:55,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:55,162 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 15:29:55,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 15:29:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash 197256715, now seen corresponding path program 95 times [2024-09-12 15:29:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 15:29:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522171074] [2024-09-12 15:29:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 15:29:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 15:29:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 15:29:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 15:29:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 15:29:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 15:29:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 15:29:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 15:29:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 15:29:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 15:29:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 15:29:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 15:29:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 15:29:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 15:29:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 15:29:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 15:29:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 15:29:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 15:29:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 15:29:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 15:29:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 15:29:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 15:29:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 15:29:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 15:29:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 15:29:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 15:29:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-12 15:29:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 15:29:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-12 15:29:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 15:29:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 15:29:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-12 15:29:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-12 15:29:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-12 15:29:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 15:29:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 15:29:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-12 15:29:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-12 15:29:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-12 15:29:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-12 15:29:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 15:29:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-12 15:29:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-12 15:29:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-12 15:29:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-12 15:29:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-12 15:29:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-12 15:29:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-12 15:29:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-12 15:29:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-12 15:29:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 15:29:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 15:29:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3434 proven. 1318 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-12 15:29:58,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 15:29:58,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522171074] [2024-09-12 15:29:58,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522171074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 15:29:58,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719698030] [2024-09-12 15:29:58,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 15:29:58,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 15:29:58,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 15:29:58,316 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) [2024-09-12 15:29:58,317 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-12 15:29:58,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-12 15:29:58,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 15:29:58,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-12 15:29:58,477 INFO L285 TraceCheckSpWp]: Computing forward predicates...