./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 a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-a9b967e-m [2024-09-12 16:26:06,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:26:06,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:26:06,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:26:06,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:26:06,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:26:06,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:26:06,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:26:06,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:26:06,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:26:06,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:26:06,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:26:06,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:26:06,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:26:06,137 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:26:06,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:26:06,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:26:06,138 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:26:06,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:26:06,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:26:06,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:26:06,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:26:06,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:26:06,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:26:06,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:26:06,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:26:06,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:26:06,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:26:06,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:26:06,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:26:06,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:26:06,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:26:06,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:06,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:26:06,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:26:06,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:26:06,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:26:06,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:26:06,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:26:06,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:26:06,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:26:06,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:26:06,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:26:06,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:26:06,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:26:06,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:26:06,515 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:26:06,516 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:26:06,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition03-1.c [2024-09-12 16:26:08,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:26:08,306 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:26:08,307 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c [2024-09-12 16:26:08,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c58117574/91d9ac61502041baa1ca92f03595ad9c/FLAG43d3e5646 [2024-09-12 16:26:08,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c58117574/91d9ac61502041baa1ca92f03595ad9c [2024-09-12 16:26:08,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:26:08,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:26:08,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:08,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:26:08,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:26:08,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441b8a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08, skipping insertion in model container [2024-09-12 16:26:08,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:26:08,552 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] [2024-09-12 16:26:08,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:08,573 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:26:08,588 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] [2024-09-12 16:26:08,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:26:08,606 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:26:08,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08 WrapperNode [2024-09-12 16:26:08,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:26:08,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:08,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:26:08,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:26:08,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,627 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:26:08,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:26:08,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:26:08,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:26:08,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:26:08,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,661 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 16:26:08,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:26:08,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:26:08,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:26:08,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:26:08,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (1/1) ... [2024-09-12 16:26:08,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:26:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:08,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 16:26:08,708 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 16:26:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:26:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:26:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:26:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:26:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:26:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:26:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:26:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:26:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-12 16:26:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-12 16:26:08,817 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:26:08,819 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:26:08,937 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-12 16:26:08,937 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:26:08,966 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:26:08,966 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:26:08,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:08 BoogieIcfgContainer [2024-09-12 16:26:08,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:26:08,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:26:08,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:26:08,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:26:08,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:26:08" (1/3) ... [2024-09-12 16:26:08,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c90e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:08, skipping insertion in model container [2024-09-12 16:26:08,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:26:08" (2/3) ... [2024-09-12 16:26:08,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c90e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:26:08, skipping insertion in model container [2024-09-12 16:26:08,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:26:08" (3/3) ... [2024-09-12 16:26:08,979 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2024-09-12 16:26:08,997 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:26:08,999 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:26:09,050 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:26:09,057 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;@6658ea7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:26:09,057 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:26:09,061 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) [2024-09-12 16:26:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 16:26:09,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:09,075 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:09,075 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1490740627, now seen corresponding path program 1 times [2024-09-12 16:26:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:09,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883849071] [2024-09-12 16:26:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:09,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883849071] [2024-09-12 16:26:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883849071] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:09,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:26:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389562287] [2024-09-12 16:26:09,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:09,398 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:26:09,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:26:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:26:09,423 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) [2024-09-12 16:26:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:09,517 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-12 16:26:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:26:09,519 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 [2024-09-12 16:26:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:09,527 INFO L225 Difference]: With dead ends: 36 [2024-09-12 16:26:09,527 INFO L226 Difference]: Without dead ends: 24 [2024-09-12 16:26:09,530 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 [2024-09-12 16:26:09,534 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 [2024-09-12 16:26:09,536 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] [2024-09-12 16:26:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-12 16:26:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-12 16:26:09,573 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) [2024-09-12 16:26:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-12 16:26:09,575 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2024-09-12 16:26:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:09,577 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-12 16:26:09,577 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) [2024-09-12 16:26:09,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-12 16:26:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 16:26:09,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:09,579 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:09,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:26:09,580 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:09,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2027321068, now seen corresponding path program 1 times [2024-09-12 16:26:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31863725] [2024-09-12 16:26:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:26:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31863725] [2024-09-12 16:26:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31863725] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:26:09,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:26:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 16:26:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595847706] [2024-09-12 16:26:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:26:09,725 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 16:26:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:09,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 16:26:09,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 16:26:09,727 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) [2024-09-12 16:26:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:09,763 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-09-12 16:26:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 16:26:09,764 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 [2024-09-12 16:26:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:09,765 INFO L225 Difference]: With dead ends: 32 [2024-09-12 16:26:09,765 INFO L226 Difference]: Without dead ends: 24 [2024-09-12 16:26:09,766 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 [2024-09-12 16:26:09,767 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 [2024-09-12 16:26:09,767 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] [2024-09-12 16:26:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-12 16:26:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-12 16:26:09,778 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) [2024-09-12 16:26:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-09-12 16:26:09,780 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-09-12 16:26:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:09,780 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-09-12 16:26:09,780 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) [2024-09-12 16:26:09,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-09-12 16:26:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 16:26:09,782 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:09,782 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:09,782 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 16:26:09,783 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:09,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash 596179159, now seen corresponding path program 1 times [2024-09-12 16:26:09,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:09,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210489186] [2024-09-12 16:26:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:09,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:09,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:10,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210489186] [2024-09-12 16:26:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210489186] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725944056] [2024-09-12 16:26:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:10,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:10,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:10,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:10,045 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:26:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 16:26:10,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 16:26:10,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:26:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725944056] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:10,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:10,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-12 16:26:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903462207] [2024-09-12 16:26:10,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:10,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 16:26:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 16:26:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-12 16:26:10,453 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) [2024-09-12 16:26:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:10,632 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-09-12 16:26:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 16:26:10,633 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 [2024-09-12 16:26:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:10,635 INFO L225 Difference]: With dead ends: 57 [2024-09-12 16:26:10,635 INFO L226 Difference]: Without dead ends: 37 [2024-09-12 16:26:10,636 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 [2024-09-12 16:26:10,638 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 [2024-09-12 16:26:10,639 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] [2024-09-12 16:26:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-12 16:26:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-12 16:26:10,655 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) [2024-09-12 16:26:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-12 16:26:10,657 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2024-09-12 16:26:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:10,657 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-12 16:26:10,658 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) [2024-09-12 16:26:10,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-12 16:26:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 16:26:10,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:10,660 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:10,674 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:26:10,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:10,861 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:10,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1205196513, now seen corresponding path program 2 times [2024-09-12 16:26:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792917569] [2024-09-12 16:26:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:10,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:26:11,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792917569] [2024-09-12 16:26:11,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792917569] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555533567] [2024-09-12 16:26:11,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:11,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:11,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:11,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:11,172 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:26:11,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:11,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:11,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 16:26:11,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 16:26:11,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:26:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555533567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:11,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:11,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2024-09-12 16:26:11,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81456687] [2024-09-12 16:26:11,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:11,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 16:26:11,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:11,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 16:26:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-12 16:26:11,896 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) [2024-09-12 16:26:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:12,068 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-09-12 16:26:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 16:26:12,070 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 [2024-09-12 16:26:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:12,071 INFO L225 Difference]: With dead ends: 49 [2024-09-12 16:26:12,071 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 16:26:12,071 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 [2024-09-12 16:26:12,072 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 [2024-09-12 16:26:12,072 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] [2024-09-12 16:26:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 16:26:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-12 16:26:12,084 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) [2024-09-12 16:26:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-12 16:26:12,085 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 34 [2024-09-12 16:26:12,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:12,086 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-12 16:26:12,086 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) [2024-09-12 16:26:12,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-12 16:26:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 16:26:12,088 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:12,089 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:12,108 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 16:26:12,293 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:12,294 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:12,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash -661240853, now seen corresponding path program 3 times [2024-09-12 16:26:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:12,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810870550] [2024-09-12 16:26:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 16:26:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810870550] [2024-09-12 16:26:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810870550] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089886579] [2024-09-12 16:26:12,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:26:12,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:12,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:12,758 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:26:12,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 16:26:12,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:12,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 16:26:12,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-12 16:26:12,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:26:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089886579] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:14,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2024-09-12 16:26:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043432726] [2024-09-12 16:26:14,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:14,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 16:26:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 16:26:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-09-12 16:26:14,091 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) [2024-09-12 16:26:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:14,277 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-09-12 16:26:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 16:26:14,279 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 [2024-09-12 16:26:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:14,280 INFO L225 Difference]: With dead ends: 55 [2024-09-12 16:26:14,280 INFO L226 Difference]: Without dead ends: 49 [2024-09-12 16:26:14,281 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 [2024-09-12 16:26:14,281 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 [2024-09-12 16:26:14,282 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] [2024-09-12 16:26:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-12 16:26:14,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-12 16:26:14,296 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) [2024-09-12 16:26:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-12 16:26:14,300 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 48 [2024-09-12 16:26:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:14,301 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-12 16:26:14,301 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) [2024-09-12 16:26:14,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-12 16:26:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-12 16:26:14,305 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:14,305 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:14,323 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:14,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:14,506 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:14,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:14,506 INFO L85 PathProgramCache]: Analyzing trace with hash -135028747, now seen corresponding path program 4 times [2024-09-12 16:26:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:14,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323076905] [2024-09-12 16:26:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:14,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:14,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-12 16:26:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323076905] [2024-09-12 16:26:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323076905] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598618216] [2024-09-12 16:26:15,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:26:15,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:15,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:15,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:15,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:26:15,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:26:15,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:15,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 16:26:15,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-12 16:26:15,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 16:26:17,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598618216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:17,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:17,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2024-09-12 16:26:17,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824650197] [2024-09-12 16:26:17,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:17,496 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 16:26:17,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:17,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 16:26:17,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-09-12 16:26:17,497 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) [2024-09-12 16:26:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:17,699 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-09-12 16:26:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 16:26:17,700 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 [2024-09-12 16:26:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:17,702 INFO L225 Difference]: With dead ends: 61 [2024-09-12 16:26:17,702 INFO L226 Difference]: Without dead ends: 55 [2024-09-12 16:26:17,703 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 [2024-09-12 16:26:17,703 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 [2024-09-12 16:26:17,704 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] [2024-09-12 16:26:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-12 16:26:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-09-12 16:26:17,712 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) [2024-09-12 16:26:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-09-12 16:26:17,715 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 62 [2024-09-12 16:26:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:17,716 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-09-12 16:26:17,716 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) [2024-09-12 16:26:17,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-09-12 16:26:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-12 16:26:17,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:17,721 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:17,742 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 16:26:17,921 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:17,922 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:17,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1309193473, now seen corresponding path program 5 times [2024-09-12 16:26:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112213118] [2024-09-12 16:26:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-12 16:26:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112213118] [2024-09-12 16:26:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112213118] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721360465] [2024-09-12 16:26:18,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:26:18,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:18,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:18,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:18,588 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:26:18,693 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-12 16:26:18,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:18,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 16:26:18,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-12 16:26:18,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 16:26:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721360465] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:22,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2024-09-12 16:26:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695392256] [2024-09-12 16:26:22,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:22,211 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 16:26:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 16:26:22,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2024-09-12 16:26:22,212 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) [2024-09-12 16:26:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:22,440 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-12 16:26:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 16:26:22,441 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 [2024-09-12 16:26:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:22,442 INFO L225 Difference]: With dead ends: 67 [2024-09-12 16:26:22,443 INFO L226 Difference]: Without dead ends: 61 [2024-09-12 16:26:22,443 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 [2024-09-12 16:26:22,444 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 [2024-09-12 16:26:22,445 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] [2024-09-12 16:26:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-12 16:26:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-12 16:26:22,453 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) [2024-09-12 16:26:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-09-12 16:26:22,454 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 76 [2024-09-12 16:26:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:22,454 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-09-12 16:26:22,455 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) [2024-09-12 16:26:22,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-09-12 16:26:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-12 16:26:22,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:22,456 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:22,473 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 16:26:22,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 16:26:22,657 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:22,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1098210039, now seen corresponding path program 6 times [2024-09-12 16:26:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782264891] [2024-09-12 16:26:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:22,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:22,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-12 16:26:23,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:23,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782264891] [2024-09-12 16:26:23,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782264891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:23,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556872282] [2024-09-12 16:26:23,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:26:23,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:23,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:23,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:23,470 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 16:26:23,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-12 16:26:23,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:23,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 16:26:23,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-12 16:26:23,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-12 16:26:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556872282] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:29,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:29,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2024-09-12 16:26:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240883457] [2024-09-12 16:26:29,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:29,347 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 16:26:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 16:26:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 16:26:29,349 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) [2024-09-12 16:26:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:29,589 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-09-12 16:26:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 16:26:29,590 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 [2024-09-12 16:26:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:29,591 INFO L225 Difference]: With dead ends: 73 [2024-09-12 16:26:29,591 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 16:26:29,593 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 [2024-09-12 16:26:29,593 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 [2024-09-12 16:26:29,594 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] [2024-09-12 16:26:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 16:26:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-12 16:26:29,606 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) [2024-09-12 16:26:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-09-12 16:26:29,607 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 90 [2024-09-12 16:26:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:29,608 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-09-12 16:26:29,608 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) [2024-09-12 16:26:29,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-09-12 16:26:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 16:26:29,610 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:29,610 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:29,627 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 16:26:29,814 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:29,815 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:29,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1131875859, now seen corresponding path program 7 times [2024-09-12 16:26:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23967723] [2024-09-12 16:26:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:29,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-12 16:26:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23967723] [2024-09-12 16:26:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23967723] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049054831] [2024-09-12 16:26:30,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:26:30,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:30,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:30,955 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 16:26:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:31,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 16:26:31,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-09-12 16:26:31,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-12 16:26:40,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049054831] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:40,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 37 [2024-09-12 16:26:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749794529] [2024-09-12 16:26:40,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:40,380 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 16:26:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 16:26:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 16:26:40,382 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) [2024-09-12 16:26:40,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:40,614 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-09-12 16:26:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 16:26:40,615 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 [2024-09-12 16:26:40,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:40,616 INFO L225 Difference]: With dead ends: 79 [2024-09-12 16:26:40,617 INFO L226 Difference]: Without dead ends: 73 [2024-09-12 16:26:40,618 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 [2024-09-12 16:26:40,618 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 [2024-09-12 16:26:40,619 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] [2024-09-12 16:26:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-12 16:26:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-12 16:26:40,635 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) [2024-09-12 16:26:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-09-12 16:26:40,636 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 104 [2024-09-12 16:26:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:40,637 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-09-12 16:26:40,637 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) [2024-09-12 16:26:40,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-09-12 16:26:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-12 16:26:40,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:40,639 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:40,654 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 16:26:40,842 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:40,843 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:40,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1771706851, now seen corresponding path program 8 times [2024-09-12 16:26:40,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:40,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208011525] [2024-09-12 16:26:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:41,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-12 16:26:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208011525] [2024-09-12 16:26:42,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208011525] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138464621] [2024-09-12 16:26:42,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:26:42,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:42,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:42,214 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 16:26:42,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:26:42,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:42,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 16:26:42,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-09-12 16:26:42,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:26:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 16:26:56,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138464621] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:26:56,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:26:56,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 41 [2024-09-12 16:26:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621589841] [2024-09-12 16:26:56,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:26:56,817 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 16:26:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:26:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 16:26:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1203, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 16:26:56,819 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) [2024-09-12 16:26:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:26:57,053 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-09-12 16:26:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 16:26:57,053 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 [2024-09-12 16:26:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:26:57,054 INFO L225 Difference]: With dead ends: 85 [2024-09-12 16:26:57,054 INFO L226 Difference]: Without dead ends: 79 [2024-09-12 16:26:57,055 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 [2024-09-12 16:26:57,056 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 [2024-09-12 16:26:57,056 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] [2024-09-12 16:26:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-12 16:26:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-09-12 16:26:57,066 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) [2024-09-12 16:26:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-09-12 16:26:57,067 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 118 [2024-09-12 16:26:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:26:57,067 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-09-12 16:26:57,067 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) [2024-09-12 16:26:57,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-09-12 16:26:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-12 16:26:57,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:26:57,069 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:26:57,089 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 16:26:57,270 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:57,270 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:26:57,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:26:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash -18838233, now seen corresponding path program 9 times [2024-09-12 16:26:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:26:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755736587] [2024-09-12 16:26:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:26:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:26:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:57,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:26:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:57,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:26:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:57,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:57,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:58,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:59,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:26:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:26:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-09-12 16:26:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:26:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755736587] [2024-09-12 16:26:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755736587] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:26:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197514477] [2024-09-12 16:26:59,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:26:59,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:26:59,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:26:59,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:26:59,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 16:26:59,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 16:26:59,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:26:59,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 16:26:59,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:26:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-09-12 16:26:59,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-12 16:27:20,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197514477] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:20,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:20,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 45 [2024-09-12 16:27:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644261076] [2024-09-12 16:27:20,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:20,318 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 16:27:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 16:27:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 16:27:20,320 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) [2024-09-12 16:27:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:20,637 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-09-12 16:27:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 16:27:20,637 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 [2024-09-12 16:27:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:20,638 INFO L225 Difference]: With dead ends: 91 [2024-09-12 16:27:20,638 INFO L226 Difference]: Without dead ends: 85 [2024-09-12 16:27:20,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 262 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1323, Invalid=2709, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 16:27:20,641 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:27:20,641 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 214 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:27:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-12 16:27:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-12 16:27:20,654 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) [2024-09-12 16:27:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-09-12 16:27:20,655 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 132 [2024-09-12 16:27:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:20,655 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-09-12 16:27:20,656 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) [2024-09-12 16:27:20,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-09-12 16:27:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-12 16:27:20,657 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:20,657 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:20,672 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 16:27:20,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 16:27:20,860 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2018534193, now seen corresponding path program 10 times [2024-09-12 16:27:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909735861] [2024-09-12 16:27:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:21,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:21,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:27:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:21,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:21,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:21,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:21,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-12 16:27:22,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909735861] [2024-09-12 16:27:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909735861] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380573108] [2024-09-12 16:27:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:27:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:22,975 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:22,976 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 16:27:23,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:27:23,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:23,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 16:27:23,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-09-12 16:27:23,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:27:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-12 16:27:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380573108] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:27:53,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:27:53,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 49 [2024-09-12 16:27:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531889094] [2024-09-12 16:27:53,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:27:53,143 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 16:27:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:27:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 16:27:53,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 16:27:53,145 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) [2024-09-12 16:27:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:27:53,519 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-09-12 16:27:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 16:27:53,520 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 [2024-09-12 16:27:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:27:53,521 INFO L225 Difference]: With dead ends: 97 [2024-09-12 16:27:53,521 INFO L226 Difference]: Without dead ends: 91 [2024-09-12 16:27:53,523 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 [2024-09-12 16:27:53,523 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 455 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-12 16:27:53,523 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] [2024-09-12 16:27:53,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-12 16:27:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-12 16:27:53,533 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) [2024-09-12 16:27:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-09-12 16:27:53,534 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 146 [2024-09-12 16:27:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:27:53,534 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-09-12 16:27:53,535 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) [2024-09-12 16:27:53,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-09-12 16:27:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-12 16:27:53,537 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:27:53,537 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:27:53,553 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 16:27:53,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 16:27:53,738 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:27:53,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:27:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1946077243, now seen corresponding path program 11 times [2024-09-12 16:27:53,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:27:53,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673486982] [2024-09-12 16:27:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:27:53,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:27:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:53,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:27:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:53,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:27:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:54,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:55,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:27:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:27:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-12 16:27:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:27:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673486982] [2024-09-12 16:27:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673486982] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:27:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615140154] [2024-09-12 16:27:56,097 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:27:56,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:27:56,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:27:56,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:27:56,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 16:27:57,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-12 16:27:57,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:27:57,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 16:27:57,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:27:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-09-12 16:27:57,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:28:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-12 16:28:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615140154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:28:37,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:28:37,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 53 [2024-09-12 16:28:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797187199] [2024-09-12 16:28:37,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:28:37,836 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-12 16:28:37,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:28:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-12 16:28:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 16:28:37,838 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) [2024-09-12 16:28:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:28:38,142 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-09-12 16:28:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 16:28:38,142 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 [2024-09-12 16:28:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:28:38,143 INFO L225 Difference]: With dead ends: 103 [2024-09-12 16:28:38,143 INFO L226 Difference]: Without dead ends: 97 [2024-09-12 16:28:38,145 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 [2024-09-12 16:28:38,145 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 [2024-09-12 16:28:38,145 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] [2024-09-12 16:28:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-12 16:28:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-09-12 16:28:38,159 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) [2024-09-12 16:28:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-09-12 16:28:38,160 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 160 [2024-09-12 16:28:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:28:38,162 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-09-12 16:28:38,162 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) [2024-09-12 16:28:38,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-09-12 16:28:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-12 16:28:38,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:28:38,163 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:28:38,180 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 16:28:38,364 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:28:38,364 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:28:38,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:28:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1693115323, now seen corresponding path program 12 times [2024-09-12 16:28:38,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:28:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436433611] [2024-09-12 16:28:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:28:38,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:28:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:38,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:28:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:38,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:28:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:38,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:39,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:39,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:39,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:39,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:39,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:28:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:28:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-09-12 16:28:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:28:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436433611] [2024-09-12 16:28:40,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436433611] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:28:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030110499] [2024-09-12 16:28:40,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:28:40,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:28:40,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:28:40,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:28:40,936 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 16:28:42,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-09-12 16:28:42,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:28:42,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 16:28:42,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:28:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-09-12 16:28:42,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:29:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-12 16:29:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030110499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:29:37,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:29:37,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 57 [2024-09-12 16:29:37,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517784906] [2024-09-12 16:29:37,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:29:37,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-12 16:29:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:29:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-12 16:29:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2355, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 16:29:37,674 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) [2024-09-12 16:29:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:29:38,072 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-09-12 16:29:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 16:29:38,073 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 [2024-09-12 16:29:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:29:38,074 INFO L225 Difference]: With dead ends: 109 [2024-09-12 16:29:38,074 INFO L226 Difference]: Without dead ends: 103 [2024-09-12 16:29:38,076 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 [2024-09-12 16:29:38,076 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 [2024-09-12 16:29:38,076 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] [2024-09-12 16:29:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-12 16:29:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-09-12 16:29:38,086 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) [2024-09-12 16:29:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-09-12 16:29:38,087 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 174 [2024-09-12 16:29:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:29:38,087 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-09-12 16:29:38,087 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) [2024-09-12 16:29:38,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:38,088 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-09-12 16:29:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-12 16:29:38,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:29:38,089 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:29:38,112 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 16:29:38,290 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 16:29:38,290 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:29:38,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:29:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1868775601, now seen corresponding path program 13 times [2024-09-12 16:29:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:29:38,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796372803] [2024-09-12 16:29:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:29:38,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:29:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:38,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:29:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:38,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:29:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:38,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:39,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:39,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:39,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:39,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:39,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:39,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:40,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:41,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-12 16:29:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-09-12 16:29:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:29:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796372803] [2024-09-12 16:29:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796372803] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:29:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201181222] [2024-09-12 16:29:41,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:29:41,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:29:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:29:41,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:29:41,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 16:29:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:29:42,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 16:29:42,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:29:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-09-12 16:29:43,149 INFO L327 TraceCheckSpWp]: Computing backward predicates...