./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition03-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Addition03-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --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-5189fb6-m [2024-09-13 03:07:01,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:07:01,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:07:01,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:07:01,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:07:01,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:07:01,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:07:01,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:07:01,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:07:01,248 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:07:01,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:07:01,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:07:01,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:07:01,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:07:01,250 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:07:01,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:07:01,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:07:01,251 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:07:01,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:07:01,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:07:01,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:07:01,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:07:01,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:07:01,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:07:01,253 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:07:01,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:07:01,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:07:01,254 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:07:01,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:07:01,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:07:01,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:07:01,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:07:01,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:07:01,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:07:01,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:07:01,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:07:01,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:07:01,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:07:01,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:07:01,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:07:01,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:07:01,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:07:01,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:07:01,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:07:01,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:07:01,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:07:01,532 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:07:01,532 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:07:01,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition03-1.c [2024-09-13 03:07:02,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:07:03,125 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:07:03,126 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c [2024-09-13 03:07:03,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/91ea0539b/5fd0e30c93384c1c9634a903a9814e0d/FLAG9147d6870 [2024-09-13 03:07:03,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/91ea0539b/5fd0e30c93384c1c9634a903a9814e0d [2024-09-13 03:07:03,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:07:03,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:07:03,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:07:03,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:07:03,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:07:03,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe3c084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03, skipping insertion in model container [2024-09-13 03:07:03,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,171 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:07:03,303 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2024-09-13 03:07:03,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:07:03,316 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:07:03,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2024-09-13 03:07:03,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:07:03,342 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:07:03,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03 WrapperNode [2024-09-13 03:07:03,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:07:03,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:07:03,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:07:03,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:07:03,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,363 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:07:03,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:07:03,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:07:03,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:07:03,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:07:03,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,405 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]. [2024-09-13 03:07:03,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:07:03,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:07:03,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:07:03,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:07:03,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (1/1) ... [2024-09-13 03:07:03,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:07:03,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:03,459 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) [2024-09-13 03:07:03,464 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 [2024-09-13 03:07:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:07:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:07:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:07:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:07:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:07:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:07:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:07:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:07:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-13 03:07:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-13 03:07:03,583 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:07:03,585 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:07:03,705 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-13 03:07:03,705 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:07:03,723 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:07:03,724 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:07:03,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:07:03 BoogieIcfgContainer [2024-09-13 03:07:03,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:07:03,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:07:03,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:07:03,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:07:03,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:07:03" (1/3) ... [2024-09-13 03:07:03,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e45922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:07:03, skipping insertion in model container [2024-09-13 03:07:03,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:03" (2/3) ... [2024-09-13 03:07:03,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e45922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:07:03, skipping insertion in model container [2024-09-13 03:07:03,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:07:03" (3/3) ... [2024-09-13 03:07:03,733 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2024-09-13 03:07:03,749 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:07:03,750 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:07:03,825 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:07:03,835 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;@7fb8e43e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:07:03,835 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:07:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 03:07:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 03:07:03,866 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:03,866 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:03,866 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:03,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1490740627, now seen corresponding path program 1 times [2024-09-13 03:07:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:03,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057359444] [2024-09-13 03:07:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:07:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:04,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057359444] [2024-09-13 03:07:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057359444] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:04,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:04,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:07:04,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628812975] [2024-09-13 03:07:04,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:04,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:07:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:07:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:07:04,195 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 03:07:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:04,300 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-13 03:07:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 03:07:04,303 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-13 03:07:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:04,310 INFO L225 Difference]: With dead ends: 36 [2024-09-13 03:07:04,310 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 03:07:04,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:07:04,316 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:04,317 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 58 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 03:07:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-13 03:07:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 03:07:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-13 03:07:04,350 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2024-09-13 03:07:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:04,351 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-13 03:07:04,351 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 03:07:04,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-13 03:07:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 03:07:04,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:04,354 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:04,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:07:04,354 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:04,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:04,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2027321068, now seen corresponding path program 1 times [2024-09-13 03:07:04,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:04,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021256460] [2024-09-13 03:07:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:07:04,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:04,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021256460] [2024-09-13 03:07:04,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021256460] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 03:07:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192429219] [2024-09-13 03:07:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:04,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 03:07:04,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 03:07:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 03:07:04,485 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 03:07:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:04,525 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-09-13 03:07:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 03:07:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-13 03:07:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:04,527 INFO L225 Difference]: With dead ends: 32 [2024-09-13 03:07:04,527 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 03:07:04,527 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 03:07:04,528 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:04,529 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 03:07:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 03:07:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-13 03:07:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 03:07:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-09-13 03:07:04,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-09-13 03:07:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:04,544 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-09-13 03:07:04,545 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 03:07:04,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-09-13 03:07:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 03:07:04,547 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:04,547 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:04,547 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 03:07:04,547 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:04,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash 596179159, now seen corresponding path program 1 times [2024-09-13 03:07:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:04,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261503875] [2024-09-13 03:07:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:07:04,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261503875] [2024-09-13 03:07:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261503875] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707621397] [2024-09-13 03:07:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:04,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:04,820 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) [2024-09-13 03:07:04,821 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:07:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:04,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 03:07:04,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 03:07:04,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:07:05,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707621397] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:05,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:05,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-13 03:07:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919796569] [2024-09-13 03:07:05,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:05,136 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 03:07:05,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 03:07:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:07:05,138 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 03:07:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:05,299 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-09-13 03:07:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 03:07:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 20 [2024-09-13 03:07:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:05,301 INFO L225 Difference]: With dead ends: 57 [2024-09-13 03:07:05,303 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 03:07:05,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-09-13 03:07:05,304 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:05,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 03:07:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-13 03:07:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 03:07:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-13 03:07:05,319 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2024-09-13 03:07:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:05,320 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-13 03:07:05,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 03:07:05,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-13 03:07:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-13 03:07:05,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:05,322 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:05,336 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:05,526 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 [2024-09-13 03:07:05,527 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:05,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:05,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1205196513, now seen corresponding path program 2 times [2024-09-13 03:07:05,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:05,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91307216] [2024-09-13 03:07:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:05,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:05,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:05,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:05,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:05,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 03:07:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91307216] [2024-09-13 03:07:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91307216] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:05,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802399714] [2024-09-13 03:07:05,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:07:05,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:05,899 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) [2024-09-13 03:07:05,901 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 03:07:05,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:07:05,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:05,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 03:07:05,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 03:07:06,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:07:06,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802399714] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:06,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:06,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2024-09-13 03:07:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209628718] [2024-09-13 03:07:06,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:06,684 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 03:07:06,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 03:07:06,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-13 03:07:06,686 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-13 03:07:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:06,844 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-09-13 03:07:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 03:07:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 34 [2024-09-13 03:07:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:06,846 INFO L225 Difference]: With dead ends: 49 [2024-09-13 03:07:06,846 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 03:07:06,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-09-13 03:07:06,847 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:06,847 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 03:07:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-13 03:07:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (11), 8 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-13 03:07:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-13 03:07:06,856 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 34 [2024-09-13 03:07:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:06,858 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-13 03:07:06,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-13 03:07:06,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-13 03:07:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-13 03:07:06,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:06,860 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:06,876 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 03:07:07,061 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 [2024-09-13 03:07:07,061 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:07,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash -661240853, now seen corresponding path program 3 times [2024-09-13 03:07:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116451240] [2024-09-13 03:07:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 03:07:07,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:07,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116451240] [2024-09-13 03:07:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116451240] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:07,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220203939] [2024-09-13 03:07:07,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:07:07,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:07,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:07,491 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) [2024-09-13 03:07:07,492 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 03:07:07,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-13 03:07:07,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:07,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 03:07:07,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-13 03:07:07,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 03:07:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220203939] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:08,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2024-09-13 03:07:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048269941] [2024-09-13 03:07:08,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:08,747 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 03:07:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 03:07:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-09-13 03:07:08,750 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-09-13 03:07:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:08,928 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-09-13 03:07:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 03:07:08,928 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 48 [2024-09-13 03:07:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:08,930 INFO L225 Difference]: With dead ends: 55 [2024-09-13 03:07:08,930 INFO L226 Difference]: Without dead ends: 49 [2024-09-13 03:07:08,931 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:07:08,931 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:08,932 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 123 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-13 03:07:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-13 03:07:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 9 states have return successors, (13), 10 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-13 03:07:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-13 03:07:08,941 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 48 [2024-09-13 03:07:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:08,941 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-13 03:07:08,941 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-09-13 03:07:08,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-13 03:07:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-13 03:07:08,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:08,943 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:08,960 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:09,147 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 [2024-09-13 03:07:09,148 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:09,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash -135028747, now seen corresponding path program 4 times [2024-09-13 03:07:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:09,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122025004] [2024-09-13 03:07:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:09,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 03:07:09,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:09,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122025004] [2024-09-13 03:07:09,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122025004] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:09,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194049713] [2024-09-13 03:07:09,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:07:09,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:09,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:09,652 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) [2024-09-13 03:07:09,653 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 03:07:09,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:07:09,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:09,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-13 03:07:09,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-13 03:07:09,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 03:07:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194049713] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:11,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:11,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2024-09-13 03:07:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139620006] [2024-09-13 03:07:11,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:11,965 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 03:07:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 03:07:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-09-13 03:07:11,966 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-13 03:07:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:12,150 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-09-13 03:07:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 03:07:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) Word has length 62 [2024-09-13 03:07:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:12,152 INFO L225 Difference]: With dead ends: 61 [2024-09-13 03:07:12,152 INFO L226 Difference]: Without dead ends: 55 [2024-09-13 03:07:12,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 03:07:12,153 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:12,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 116 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-13 03:07:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-09-13 03:07:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 6 states have call successors, (6), 5 states have call predecessors, (6), 11 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-13 03:07:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-09-13 03:07:12,163 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 62 [2024-09-13 03:07:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:12,163 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-09-13 03:07:12,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-13 03:07:12,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-09-13 03:07:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-13 03:07:12,166 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:12,166 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:12,182 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 03:07:12,366 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 [2024-09-13 03:07:12,367 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:12,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1309193473, now seen corresponding path program 5 times [2024-09-13 03:07:12,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:12,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676751202] [2024-09-13 03:07:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:12,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:13,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 03:07:13,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:13,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676751202] [2024-09-13 03:07:13,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676751202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:13,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721580341] [2024-09-13 03:07:13,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:07:13,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:13,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:13,033 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) [2024-09-13 03:07:13,035 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 03:07:13,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-13 03:07:13,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:13,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 03:07:13,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-13 03:07:13,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 03:07:16,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721580341] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:16,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2024-09-13 03:07:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798601816] [2024-09-13 03:07:16,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:16,531 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 03:07:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:16,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 03:07:16,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2024-09-13 03:07:16,532 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-09-13 03:07:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:16,767 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-13 03:07:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 03:07:16,768 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) Word has length 76 [2024-09-13 03:07:16,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:16,769 INFO L225 Difference]: With dead ends: 67 [2024-09-13 03:07:16,769 INFO L226 Difference]: Without dead ends: 61 [2024-09-13 03:07:16,770 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=507, Invalid=1053, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 03:07:16,771 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 158 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:16,771 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 143 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-13 03:07:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-13 03:07:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 13 states have return successors, (17), 14 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-13 03:07:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-09-13 03:07:16,780 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 76 [2024-09-13 03:07:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:16,780 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-09-13 03:07:16,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-09-13 03:07:16,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-09-13 03:07:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-13 03:07:16,782 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:16,782 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:16,801 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 03:07:16,986 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 [2024-09-13 03:07:16,987 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:16,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1098210039, now seen corresponding path program 6 times [2024-09-13 03:07:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143059460] [2024-09-13 03:07:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-13 03:07:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143059460] [2024-09-13 03:07:17,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143059460] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92466446] [2024-09-13 03:07:17,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:07:17,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:17,863 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) [2024-09-13 03:07:17,866 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 03:07:18,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-13 03:07:18,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:18,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 03:07:18,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-13 03:07:18,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-13 03:07:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92466446] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:23,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2024-09-13 03:07:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835313824] [2024-09-13 03:07:23,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:23,745 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-13 03:07:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-13 03:07:23,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 03:07:23,746 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2024-09-13 03:07:23,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:23,976 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-09-13 03:07:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 03:07:23,976 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) Word has length 90 [2024-09-13 03:07:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:23,978 INFO L225 Difference]: With dead ends: 73 [2024-09-13 03:07:23,978 INFO L226 Difference]: Without dead ends: 67 [2024-09-13 03:07:23,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=675, Invalid=1395, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 03:07:23,979 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:23,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 167 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-13 03:07:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-13 03:07:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 6 states have call successors, (6), 5 states have call predecessors, (6), 15 states have return successors, (19), 16 states have call predecessors, (19), 5 states have call successors, (19) [2024-09-13 03:07:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-09-13 03:07:23,989 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 90 [2024-09-13 03:07:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:23,990 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-09-13 03:07:23,990 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2024-09-13 03:07:23,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-09-13 03:07:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-13 03:07:23,994 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:23,994 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:24,014 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:24,194 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 [2024-09-13 03:07:24,194 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:24,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1131875859, now seen corresponding path program 7 times [2024-09-13 03:07:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:24,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234498286] [2024-09-13 03:07:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:24,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:24,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-13 03:07:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234498286] [2024-09-13 03:07:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234498286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:25,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965668888] [2024-09-13 03:07:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:07:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:25,373 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) [2024-09-13 03:07:25,374 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 03:07:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:25,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-13 03:07:25,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-09-13 03:07:25,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 03:07:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965668888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:34,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 37 [2024-09-13 03:07:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875182545] [2024-09-13 03:07:34,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:34,449 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 03:07:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 03:07:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 03:07:34,450 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) [2024-09-13 03:07:34,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:34,722 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-09-13 03:07:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-13 03:07:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) Word has length 104 [2024-09-13 03:07:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:34,726 INFO L225 Difference]: With dead ends: 79 [2024-09-13 03:07:34,726 INFO L226 Difference]: Without dead ends: 73 [2024-09-13 03:07:34,727 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 206 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=867, Invalid=1785, Unknown=0, NotChecked=0, Total=2652 [2024-09-13 03:07:34,727 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 165 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:34,727 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 186 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-13 03:07:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-13 03:07:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 17 states have return successors, (21), 18 states have call predecessors, (21), 5 states have call successors, (21) [2024-09-13 03:07:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-09-13 03:07:34,739 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 104 [2024-09-13 03:07:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:34,739 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-09-13 03:07:34,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) [2024-09-13 03:07:34,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-09-13 03:07:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-13 03:07:34,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:34,741 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:34,755 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:34,945 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 [2024-09-13 03:07:34,946 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:34,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1771706851, now seen corresponding path program 8 times [2024-09-13 03:07:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:34,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219936172] [2024-09-13 03:07:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-13 03:07:36,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219936172] [2024-09-13 03:07:36,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219936172] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965582563] [2024-09-13 03:07:36,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:07:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:36,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:36,266 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) [2024-09-13 03:07:36,268 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 03:07:36,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:07:36,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:36,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-13 03:07:36,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-09-13 03:07:36,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-13 03:07:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965582563] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:50,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 41 [2024-09-13 03:07:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929813333] [2024-09-13 03:07:50,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:50,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-13 03:07:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-13 03:07:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1203, Unknown=0, NotChecked=0, Total=1640 [2024-09-13 03:07:50,574 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) [2024-09-13 03:07:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:50,829 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-09-13 03:07:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-13 03:07:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) Word has length 118 [2024-09-13 03:07:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:50,830 INFO L225 Difference]: With dead ends: 85 [2024-09-13 03:07:50,830 INFO L226 Difference]: Without dead ends: 79 [2024-09-13 03:07:50,832 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 234 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1083, Invalid=2223, Unknown=0, NotChecked=0, Total=3306 [2024-09-13 03:07:50,832 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:50,833 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 209 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-13 03:07:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-09-13 03:07:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 6 states have call successors, (6), 5 states have call predecessors, (6), 19 states have return successors, (23), 20 states have call predecessors, (23), 5 states have call successors, (23) [2024-09-13 03:07:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-09-13 03:07:50,843 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 118 [2024-09-13 03:07:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:50,843 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-09-13 03:07:50,844 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) [2024-09-13 03:07:50,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-09-13 03:07:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-13 03:07:50,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:50,846 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:50,861 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:51,049 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 [2024-09-13 03:07:51,050 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:51,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash -18838233, now seen corresponding path program 9 times [2024-09-13 03:07:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:51,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186843898] [2024-09-13 03:07:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:51,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:07:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-09-13 03:07:52,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186843898] [2024-09-13 03:07:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186843898] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086056663] [2024-09-13 03:07:52,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:07:52,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:52,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:52,696 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) [2024-09-13 03:07:52,698 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 03:07:53,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-13 03:07:53,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:53,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-13 03:07:53,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-09-13 03:07:53,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 03:08:13,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086056663] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:13,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:13,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 45 [2024-09-13 03:08:13,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152749988] [2024-09-13 03:08:13,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:13,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-13 03:08:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-13 03:08:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2024-09-13 03:08:13,702 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) [2024-09-13 03:08:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:14,043 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-09-13 03:08:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-13 03:08:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) Word has length 132 [2024-09-13 03:08:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:14,045 INFO L225 Difference]: With dead ends: 91 [2024-09-13 03:08:14,045 INFO L226 Difference]: Without dead ends: 85 [2024-09-13 03:08:14,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 262 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1323, Invalid=2709, Unknown=0, NotChecked=0, Total=4032 [2024-09-13 03:08:14,048 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:14,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 214 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:08:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-13 03:08:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-13 03:08:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 6 states have call successors, (6), 5 states have call predecessors, (6), 21 states have return successors, (25), 22 states have call predecessors, (25), 5 states have call successors, (25) [2024-09-13 03:08:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-09-13 03:08:14,067 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 132 [2024-09-13 03:08:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:14,068 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-09-13 03:08:14,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) [2024-09-13 03:08:14,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-09-13 03:08:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-13 03:08:14,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:14,072 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:14,089 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 03:08:14,272 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 [2024-09-13 03:08:14,273 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2018534193, now seen corresponding path program 10 times [2024-09-13 03:08:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400063450] [2024-09-13 03:08:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:08:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-13 03:08:16,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400063450] [2024-09-13 03:08:16,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400063450] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943826022] [2024-09-13 03:08:16,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:08:16,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:16,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:16,265 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) [2024-09-13 03:08:16,266 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 03:08:17,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:08:17,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:17,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-13 03:08:17,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-09-13 03:08:17,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-13 03:08:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943826022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:46,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 49 [2024-09-13 03:08:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067205174] [2024-09-13 03:08:46,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:46,362 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-13 03:08:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-13 03:08:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 03:08:46,363 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) [2024-09-13 03:08:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:46,715 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-09-13 03:08:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-13 03:08:46,715 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) Word has length 146 [2024-09-13 03:08:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:46,717 INFO L225 Difference]: With dead ends: 97 [2024-09-13 03:08:46,717 INFO L226 Difference]: Without dead ends: 91 [2024-09-13 03:08:46,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 290 SyntacticMatches, 19 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1587, Invalid=3243, Unknown=0, NotChecked=0, Total=4830 [2024-09-13 03:08:46,719 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 455 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:46,719 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 238 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:08:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-13 03:08:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-13 03:08:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 6 states have call successors, (6), 5 states have call predecessors, (6), 23 states have return successors, (27), 24 states have call predecessors, (27), 5 states have call successors, (27) [2024-09-13 03:08:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-09-13 03:08:46,730 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 146 [2024-09-13 03:08:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:46,731 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-09-13 03:08:46,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) [2024-09-13 03:08:46,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-09-13 03:08:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-13 03:08:46,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:46,733 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:46,750 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:46,934 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 [2024-09-13 03:08:46,934 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:46,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:46,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1946077243, now seen corresponding path program 11 times [2024-09-13 03:08:46,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:46,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584577178] [2024-09-13 03:08:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:47,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:47,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:08:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:47,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:47,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:47,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:48,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-13 03:08:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584577178] [2024-09-13 03:08:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584577178] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537471855] [2024-09-13 03:08:49,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:08:49,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:49,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:49,362 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) [2024-09-13 03:08:49,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 03:08:50,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-13 03:08:50,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:50,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-13 03:08:50,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-09-13 03:08:50,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-13 03:09:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537471855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:30,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:30,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 53 [2024-09-13 03:09:30,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12625470] [2024-09-13 03:09:30,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:30,849 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-13 03:09:30,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-13 03:09:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 03:09:30,851 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) [2024-09-13 03:09:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:31,169 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-09-13 03:09:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-13 03:09:31,170 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) Word has length 160 [2024-09-13 03:09:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:31,171 INFO L225 Difference]: With dead ends: 103 [2024-09-13 03:09:31,171 INFO L226 Difference]: Without dead ends: 97 [2024-09-13 03:09:31,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 318 SyntacticMatches, 21 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1875, Invalid=3825, Unknown=0, NotChecked=0, Total=5700 [2024-09-13 03:09:31,173 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 123 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:31,173 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 255 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:09:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-13 03:09:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-09-13 03:09:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 25 states have return successors, (29), 26 states have call predecessors, (29), 5 states have call successors, (29) [2024-09-13 03:09:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-09-13 03:09:31,186 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 160 [2024-09-13 03:09:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:31,186 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-09-13 03:09:31,186 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) [2024-09-13 03:09:31,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-09-13 03:09:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-13 03:09:31,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:31,188 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:09:31,210 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 03:09:31,394 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 [2024-09-13 03:09:31,395 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:31,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1693115323, now seen corresponding path program 12 times [2024-09-13 03:09:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:31,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818160825] [2024-09-13 03:09:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:31,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:31,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:31,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:09:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:31,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:32,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-09-13 03:09:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818160825] [2024-09-13 03:09:33,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818160825] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:33,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830769084] [2024-09-13 03:09:33,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:09:33,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:33,711 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) [2024-09-13 03:09:33,714 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 03:09:35,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-09-13 03:09:35,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:35,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-13 03:09:35,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-09-13 03:09:35,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 03:10:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830769084] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:31,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 57 [2024-09-13 03:10:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058554475] [2024-09-13 03:10:31,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:31,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-13 03:10:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-13 03:10:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2355, Unknown=0, NotChecked=0, Total=3192 [2024-09-13 03:10:31,120 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) [2024-09-13 03:10:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:31,525 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-09-13 03:10:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-13 03:10:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) Word has length 174 [2024-09-13 03:10:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:31,527 INFO L225 Difference]: With dead ends: 109 [2024-09-13 03:10:31,527 INFO L226 Difference]: Without dead ends: 103 [2024-09-13 03:10:31,529 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 346 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2187, Invalid=4455, Unknown=0, NotChecked=0, Total=6642 [2024-09-13 03:10:31,529 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 488 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:31,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 266 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:10:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-13 03:10:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-09-13 03:10:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 27 states have return successors, (31), 28 states have call predecessors, (31), 5 states have call successors, (31) [2024-09-13 03:10:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-09-13 03:10:31,541 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 174 [2024-09-13 03:10:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:31,541 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-09-13 03:10:31,542 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) [2024-09-13 03:10:31,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-09-13 03:10:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-13 03:10:31,544 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:31,544 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:10:31,564 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-13 03:10:31,744 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 [2024-09-13 03:10:31,744 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:31,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1868775601, now seen corresponding path program 13 times [2024-09-13 03:10:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:31,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924353944] [2024-09-13 03:10:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:31,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:31,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:10:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:32,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:32,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:32,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:32,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:32,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:33,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-09-13 03:10:34,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924353944] [2024-09-13 03:10:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924353944] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476932222] [2024-09-13 03:10:34,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:10:34,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:34,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:34,423 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) [2024-09-13 03:10:34,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 03:10:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:36,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-13 03:10:36,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-09-13 03:10:36,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-13 03:11:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476932222] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:49,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 55] total 61 [2024-09-13 03:11:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607409106] [2024-09-13 03:11:49,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:49,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-13 03:11:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-13 03:11:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=2703, Unknown=0, NotChecked=0, Total=3660 [2024-09-13 03:11:49,722 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 61 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 28 states have call successors, (30), 1 states have call predecessors, (30), 29 states have return successors, (78), 29 states have call predecessors, (78), 28 states have call successors, (78) [2024-09-13 03:11:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:50,125 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2024-09-13 03:11:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-13 03:11:50,126 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 28 states have call successors, (30), 1 states have call predecessors, (30), 29 states have return successors, (78), 29 states have call predecessors, (78), 28 states have call successors, (78) Word has length 188 [2024-09-13 03:11:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:50,127 INFO L225 Difference]: With dead ends: 115 [2024-09-13 03:11:50,127 INFO L226 Difference]: Without dead ends: 109 [2024-09-13 03:11:50,130 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 374 SyntacticMatches, 25 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3341 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2523, Invalid=5133, Unknown=0, NotChecked=0, Total=7656 [2024-09-13 03:11:50,130 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:50,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 318 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:11:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-13 03:11:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2024-09-13 03:11:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 29 states have return successors, (33), 30 states have call predecessors, (33), 5 states have call successors, (33) [2024-09-13 03:11:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2024-09-13 03:11:50,152 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 188 [2024-09-13 03:11:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:50,153 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2024-09-13 03:11:50,153 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 28 states have call successors, (30), 1 states have call predecessors, (30), 29 states have return successors, (78), 29 states have call predecessors, (78), 28 states have call successors, (78) [2024-09-13 03:11:50,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2024-09-13 03:11:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-09-13 03:11:50,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:50,156 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:11:50,186 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 03:11:50,356 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 [2024-09-13 03:11:50,356 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:50,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:50,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1283518119, now seen corresponding path program 14 times [2024-09-13 03:11:50,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:50,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159465992] [2024-09-13 03:11:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:11:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:50,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:51,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:51,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:51,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:51,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:52,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-09-13 03:11:53,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:53,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159465992] [2024-09-13 03:11:53,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159465992] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:53,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844385842] [2024-09-13 03:11:53,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:11:53,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:53,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:53,844 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) [2024-09-13 03:11:53,846 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 03:11:56,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:11:56,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:56,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-13 03:11:56,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2024-09-13 03:11:56,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:13:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-13 03:13:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844385842] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:13:33,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:13:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 59] total 65 [2024-09-13 03:13:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414048572] [2024-09-13 03:13:33,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:13:33,906 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-13 03:13:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:13:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-13 03:13:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=3075, Unknown=0, NotChecked=0, Total=4160 [2024-09-13 03:13:33,907 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 65 states, 65 states have (on average 2.4153846153846152) internal successors, (157), 65 states have internal predecessors, (157), 30 states have call successors, (32), 1 states have call predecessors, (32), 31 states have return successors, (84), 31 states have call predecessors, (84), 30 states have call successors, (84) [2024-09-13 03:13:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:13:34,373 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2024-09-13 03:13:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-13 03:13:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.4153846153846152) internal successors, (157), 65 states have internal predecessors, (157), 30 states have call successors, (32), 1 states have call predecessors, (32), 31 states have return successors, (84), 31 states have call predecessors, (84), 30 states have call successors, (84) Word has length 202 [2024-09-13 03:13:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:13:34,375 INFO L225 Difference]: With dead ends: 121 [2024-09-13 03:13:34,375 INFO L226 Difference]: Without dead ends: 115 [2024-09-13 03:13:34,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 402 SyntacticMatches, 27 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3850 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2883, Invalid=5859, Unknown=0, NotChecked=0, Total=8742 [2024-09-13 03:13:34,377 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 441 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:13:34,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 310 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:13:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-13 03:13:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-13 03:13:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 6 states have call successors, (6), 5 states have call predecessors, (6), 31 states have return successors, (35), 32 states have call predecessors, (35), 5 states have call successors, (35) [2024-09-13 03:13:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2024-09-13 03:13:34,392 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 202 [2024-09-13 03:13:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:13:34,393 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2024-09-13 03:13:34,393 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.4153846153846152) internal successors, (157), 65 states have internal predecessors, (157), 30 states have call successors, (32), 1 states have call predecessors, (32), 31 states have return successors, (84), 31 states have call predecessors, (84), 30 states have call successors, (84) [2024-09-13 03:13:34,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2024-09-13 03:13:34,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-09-13 03:13:34,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:13:34,397 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:13:34,432 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-13 03:13:34,597 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 [2024-09-13 03:13:34,598 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:13:34,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash -528125341, now seen corresponding path program 15 times [2024-09-13 03:13:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:13:34,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595528668] [2024-09-13 03:13:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:13:34,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:13:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:34,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:13:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:34,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:13:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:35,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:35,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:35,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:35,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:36,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:36,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:36,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:36,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:36,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:36,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:37,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2024-09-13 03:13:38,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:13:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595528668] [2024-09-13 03:13:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595528668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:13:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483453779] [2024-09-13 03:13:38,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:13:38,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:13:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:13:38,280 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) [2024-09-13 03:13:38,281 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-13 03:13:41,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-13 03:13:41,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:13:41,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-13 03:13:41,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:13:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-09-13 03:13:41,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:15:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-13 03:15:44,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483453779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:15:44,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:15:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 63] total 69 [2024-09-13 03:15:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681254835] [2024-09-13 03:15:44,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:15:44,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-13 03:15:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:15:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-13 03:15:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=3471, Unknown=0, NotChecked=0, Total=4692 [2024-09-13 03:15:44,519 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand has 69 states, 69 states have (on average 2.420289855072464) internal successors, (167), 69 states have internal predecessors, (167), 32 states have call successors, (34), 1 states have call predecessors, (34), 33 states have return successors, (90), 33 states have call predecessors, (90), 32 states have call successors, (90) [2024-09-13 03:15:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:15:45,041 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2024-09-13 03:15:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 03:15:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.420289855072464) internal successors, (167), 69 states have internal predecessors, (167), 32 states have call successors, (34), 1 states have call predecessors, (34), 33 states have return successors, (90), 33 states have call predecessors, (90), 32 states have call successors, (90) Word has length 216 [2024-09-13 03:15:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:15:45,043 INFO L225 Difference]: With dead ends: 127 [2024-09-13 03:15:45,043 INFO L226 Difference]: Without dead ends: 121 [2024-09-13 03:15:45,044 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 430 SyntacticMatches, 29 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4395 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3267, Invalid=6633, Unknown=0, NotChecked=0, Total=9900 [2024-09-13 03:15:45,045 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 273 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:15:45,045 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 318 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:15:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-09-13 03:15:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-09-13 03:15:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 5 states have call predecessors, (6), 33 states have return successors, (37), 34 states have call predecessors, (37), 5 states have call successors, (37) [2024-09-13 03:15:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2024-09-13 03:15:45,056 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 216 [2024-09-13 03:15:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:15:45,057 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2024-09-13 03:15:45,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.420289855072464) internal successors, (167), 69 states have internal predecessors, (167), 32 states have call successors, (34), 1 states have call predecessors, (34), 33 states have return successors, (90), 33 states have call predecessors, (90), 32 states have call successors, (90) [2024-09-13 03:15:45,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:15:45,059 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2024-09-13 03:15:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-09-13 03:15:45,060 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:15:45,060 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:15:45,091 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-13 03:15:45,260 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 [2024-09-13 03:15:45,261 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:15:45,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:15:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash 878264941, now seen corresponding path program 16 times [2024-09-13 03:15:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:15:45,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976950577] [2024-09-13 03:15:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:15:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:15:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:45,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:15:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:45,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:15:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:46,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:46,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:46,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:47,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:47,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:47,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:47,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:48,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:48,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:48,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:48,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:48,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:48,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:49,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:15:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:15:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1488 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2024-09-13 03:15:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:15:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976950577] [2024-09-13 03:15:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976950577] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:15:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726411500] [2024-09-13 03:15:50,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:15:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:15:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:15:50,173 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) [2024-09-13 03:15:50,174 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-13 03:15:54,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:15:54,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:15:54,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-13 03:15:54,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:15:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2024-09-13 03:15:54,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:18:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-09-13 03:18:27,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726411500] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:18:27,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:18:27,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 67] total 73 [2024-09-13 03:18:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815364553] [2024-09-13 03:18:27,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:18:27,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-13 03:18:27,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:18:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-13 03:18:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1365, Invalid=3891, Unknown=0, NotChecked=0, Total=5256 [2024-09-13 03:18:27,918 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 73 states, 73 states have (on average 2.4246575342465753) internal successors, (177), 73 states have internal predecessors, (177), 34 states have call successors, (36), 1 states have call predecessors, (36), 35 states have return successors, (96), 35 states have call predecessors, (96), 34 states have call successors, (96) [2024-09-13 03:18:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:18:28,564 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2024-09-13 03:18:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-13 03:18:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.4246575342465753) internal successors, (177), 73 states have internal predecessors, (177), 34 states have call successors, (36), 1 states have call predecessors, (36), 35 states have return successors, (96), 35 states have call predecessors, (96), 34 states have call successors, (96) Word has length 230 [2024-09-13 03:18:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:18:28,566 INFO L225 Difference]: With dead ends: 133 [2024-09-13 03:18:28,566 INFO L226 Difference]: Without dead ends: 127 [2024-09-13 03:18:28,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 458 SyntacticMatches, 31 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4976 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3675, Invalid=7455, Unknown=0, NotChecked=0, Total=11130 [2024-09-13 03:18:28,568 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 482 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:18:28,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 344 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:18:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-13 03:18:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-09-13 03:18:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 6 states have call successors, (6), 5 states have call predecessors, (6), 35 states have return successors, (39), 36 states have call predecessors, (39), 5 states have call successors, (39) [2024-09-13 03:18:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2024-09-13 03:18:28,579 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 230 [2024-09-13 03:18:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:18:28,580 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2024-09-13 03:18:28,580 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.4246575342465753) internal successors, (177), 73 states have internal predecessors, (177), 34 states have call successors, (36), 1 states have call predecessors, (36), 35 states have return successors, (96), 35 states have call predecessors, (96), 34 states have call successors, (96) [2024-09-13 03:18:28,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:18:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2024-09-13 03:18:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-13 03:18:28,582 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:18:28,582 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:18:28,637 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-13 03:18:28,782 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 [2024-09-13 03:18:28,782 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:18:28,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:18:28,783 INFO L85 PathProgramCache]: Analyzing trace with hash -846995081, now seen corresponding path program 17 times [2024-09-13 03:18:28,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:18:28,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050373150] [2024-09-13 03:18:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:18:28,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:18:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:29,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:18:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:29,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:18:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:29,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:30,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:30,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:30,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:30,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:31,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:31,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:31,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:31,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:32,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:33,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:34,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:34,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:34,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:18:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:18:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-09-13 03:18:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:18:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050373150] [2024-09-13 03:18:34,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050373150] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:18:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088586623] [2024-09-13 03:18:34,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:18:34,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:18:34,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:18:34,119 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) [2024-09-13 03:18:34,120 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-13 03:18:39,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-13 03:18:39,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:18:39,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-13 03:18:39,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:18:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-09-13 03:18:40,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15