./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/nested3-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/nested3-1.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 ed8e064f31e82b4c33cb383334d25637eef982ae8d5b8603579b97c7fdfe808e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 22:35:08,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 22:35:08,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 22:35:08,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 22:35:08,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 22:35:08,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 22:35:08,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 22:35:08,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 22:35:08,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 22:35:08,970 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 22:35:08,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 22:35:08,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 22:35:08,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 22:35:08,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 22:35:08,972 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 22:35:08,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 22:35:08,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 22:35:08,973 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 22:35:08,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 22:35:08,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 22:35:08,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 22:35:08,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 22:35:08,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 22:35:08,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 22:35:08,978 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 22:35:08,978 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 22:35:08,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 22:35:08,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 22:35:08,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 22:35:08,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 22:35:08,980 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 22:35:08,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 22:35:08,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 22:35:08,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 22:35:08,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 22:35:08,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 22:35:08,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 22:35:08,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 22:35:08,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 22:35:08,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 22:35:08,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 22:35:08,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 22:35:08,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed8e064f31e82b4c33cb383334d25637eef982ae8d5b8603579b97c7fdfe808e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 22:35:09,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 22:35:09,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 22:35:09,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 22:35:09,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 22:35:09,251 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 22:35:09,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/nested3-1.c [2024-09-12 22:35:10,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 22:35:10,848 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 22:35:10,848 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/nested3-1.c [2024-09-12 22:35:10,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/782721275/abf13d01df2744f9905dfb7bda1c5b5a/FLAG4eb59eedc [2024-09-12 22:35:10,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/782721275/abf13d01df2744f9905dfb7bda1c5b5a [2024-09-12 22:35:10,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 22:35:10,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 22:35:10,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 22:35:10,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 22:35:10,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 22:35:10,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 10:35:10" (1/1) ... [2024-09-12 22:35:10,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489c5e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:10, skipping insertion in model container [2024-09-12 22:35:10,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 10:35:10" (1/1) ... [2024-09-12 22:35:10,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 22:35:11,107 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/nested3-1.c[321,334] [2024-09-12 22:35:11,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 22:35:11,140 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 22:35:11,168 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/nested3-1.c[321,334] [2024-09-12 22:35:11,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 22:35:11,183 INFO L204 MainTranslator]: Completed translation [2024-09-12 22:35:11,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11 WrapperNode [2024-09-12 22:35:11,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 22:35:11,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 22:35:11,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 22:35:11,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 22:35:11,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,205 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 22:35:11,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 22:35:11,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 22:35:11,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 22:35:11,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 22:35:11,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,230 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 22:35:11,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 22:35:11,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 22:35:11,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 22:35:11,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 22:35:11,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (1/1) ... [2024-09-12 22:35:11,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 22:35:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:11,276 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 22:35:11,283 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 22:35:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 22:35:11,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 22:35:11,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 22:35:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 22:35:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 22:35:11,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 22:35:11,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 22:35:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 22:35:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 22:35:11,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 22:35:11,369 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 22:35:11,371 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 22:35:11,545 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-12 22:35:11,545 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 22:35:11,564 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 22:35:11,564 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-12 22:35:11,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 10:35:11 BoogieIcfgContainer [2024-09-12 22:35:11,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 22:35:11,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 22:35:11,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 22:35:11,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 22:35:11,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 10:35:10" (1/3) ... [2024-09-12 22:35:11,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369be996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 10:35:11, skipping insertion in model container [2024-09-12 22:35:11,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:35:11" (2/3) ... [2024-09-12 22:35:11,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369be996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 10:35:11, skipping insertion in model container [2024-09-12 22:35:11,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 10:35:11" (3/3) ... [2024-09-12 22:35:11,573 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-1.c [2024-09-12 22:35:11,591 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 22:35:11,591 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 22:35:11,644 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 22:35:11,654 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;@2bbf928e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 22:35:11,655 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 22:35:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 22:35:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 22:35:11,668 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:11,669 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:11,670 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:11,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash -91449342, now seen corresponding path program 1 times [2024-09-12 22:35:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:11,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953896827] [2024-09-12 22:35:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:11,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:11,966 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 22:35:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953896827] [2024-09-12 22:35:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953896827] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:35:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 22:35:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 22:35:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994244063] [2024-09-12 22:35:11,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:35:11,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 22:35:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 22:35:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:35:11,994 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:12,043 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2024-09-12 22:35:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 22:35:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 22:35:12,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:12,051 INFO L225 Difference]: With dead ends: 48 [2024-09-12 22:35:12,051 INFO L226 Difference]: Without dead ends: 26 [2024-09-12 22:35:12,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:35:12,056 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:12,057 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 46 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 22:35:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-12 22:35:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2024-09-12 22:35:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 22:35:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-09-12 22:35:12,092 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2024-09-12 22:35:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:12,093 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-09-12 22:35:12,093 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-09-12 22:35:12,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 22:35:12,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:12,095 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:12,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 22:35:12,095 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:12,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1474394065, now seen corresponding path program 1 times [2024-09-12 22:35:12,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:12,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103308644] [2024-09-12 22:35:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:12,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,191 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 22:35:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103308644] [2024-09-12 22:35:12,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103308644] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:35:12,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 22:35:12,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 22:35:12,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913926636] [2024-09-12 22:35:12,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:35:12,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 22:35:12,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 22:35:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:35:12,195 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:12,212 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-09-12 22:35:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 22:35:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 22:35:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:12,213 INFO L225 Difference]: With dead ends: 38 [2024-09-12 22:35:12,214 INFO L226 Difference]: Without dead ends: 24 [2024-09-12 22:35:12,214 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:35:12,215 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:12,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 22:35:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-12 22:35:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2024-09-12 22:35:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 22:35:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-12 22:35:12,221 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2024-09-12 22:35:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:12,222 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-12 22:35:12,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-12 22:35:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 22:35:12,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:12,223 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:12,223 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 22:35:12,223 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:12,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1513968721, now seen corresponding path program 1 times [2024-09-12 22:35:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023311362] [2024-09-12 22:35:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,328 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 22:35:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023311362] [2024-09-12 22:35:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023311362] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:35:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 22:35:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 22:35:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727792486] [2024-09-12 22:35:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:35:12,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 22:35:12,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 22:35:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:35:12,337 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:12,358 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-09-12 22:35:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 22:35:12,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 22:35:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:12,362 INFO L225 Difference]: With dead ends: 37 [2024-09-12 22:35:12,362 INFO L226 Difference]: Without dead ends: 22 [2024-09-12 22:35:12,363 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:35:12,364 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:12,364 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 22:35:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-12 22:35:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-12 22:35:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 22:35:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-09-12 22:35:12,370 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2024-09-12 22:35:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:12,370 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-09-12 22:35:12,370 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-09-12 22:35:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 22:35:12,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:12,372 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:12,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 22:35:12,372 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:12,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash 337912467, now seen corresponding path program 1 times [2024-09-12 22:35:12,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:12,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115933157] [2024-09-12 22:35:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:12,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:12,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115933157] [2024-09-12 22:35:12,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115933157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382004060] [2024-09-12 22:35:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:12,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:12,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:12,496 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 22:35:12,496 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 22:35:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:12,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 22:35:12,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:12,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:35:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:12,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382004060] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:35:12,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:35:12,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-09-12 22:35:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008848880] [2024-09-12 22:35:12,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:35:12,689 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 22:35:12,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 22:35:12,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 22:35:12,693 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:12,870 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2024-09-12 22:35:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 22:35:12,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 22:35:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:12,872 INFO L225 Difference]: With dead ends: 61 [2024-09-12 22:35:12,873 INFO L226 Difference]: Without dead ends: 45 [2024-09-12 22:35:12,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-12 22:35:12,876 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:12,876 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 176 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 22:35:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-12 22:35:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2024-09-12 22:35:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 22:35:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-09-12 22:35:12,888 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2024-09-12 22:35:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:12,888 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-09-12 22:35:12,889 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:12,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-09-12 22:35:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 22:35:12,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:12,890 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:12,907 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 22:35:13,094 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:13,095 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:13,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash -304397137, now seen corresponding path program 2 times [2024-09-12 22:35:13,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:13,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679341501] [2024-09-12 22:35:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:13,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:13,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679341501] [2024-09-12 22:35:13,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679341501] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:13,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219675883] [2024-09-12 22:35:13,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 22:35:13,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:13,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:13,209 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 22:35:13,215 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 22:35:13,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 22:35:13,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:35:13,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 22:35:13,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:13,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:35:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:13,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219675883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:35:13,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:35:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-12 22:35:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697748049] [2024-09-12 22:35:13,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:35:13,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 22:35:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 22:35:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-09-12 22:35:13,368 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:13,553 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2024-09-12 22:35:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 22:35:13,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 22:35:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:13,555 INFO L225 Difference]: With dead ends: 55 [2024-09-12 22:35:13,555 INFO L226 Difference]: Without dead ends: 31 [2024-09-12 22:35:13,557 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-09-12 22:35:13,558 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:13,559 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 22:35:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-12 22:35:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-12 22:35:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 22:35:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-09-12 22:35:13,566 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2024-09-12 22:35:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:13,566 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-09-12 22:35:13,567 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:13,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-09-12 22:35:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 22:35:13,568 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:13,568 INFO L216 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:13,586 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 22:35:13,772 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:13,773 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:13,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377169, now seen corresponding path program 3 times [2024-09-12 22:35:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282091394] [2024-09-12 22:35:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:14,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:14,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282091394] [2024-09-12 22:35:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282091394] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448413674] [2024-09-12 22:35:14,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 22:35:14,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:14,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:14,059 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 22:35:14,067 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 22:35:14,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 22:35:14,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:35:14,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 22:35:14,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 22:35:14,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 22:35:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448413674] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:35:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 22:35:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2024-09-12 22:35:14,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853111498] [2024-09-12 22:35:14,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:35:14,421 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 22:35:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:14,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 22:35:14,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-09-12 22:35:14,422 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:14,524 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-12 22:35:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 22:35:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-09-12 22:35:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:14,526 INFO L225 Difference]: With dead ends: 38 [2024-09-12 22:35:14,526 INFO L226 Difference]: Without dead ends: 36 [2024-09-12 22:35:14,526 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-12 22:35:14,527 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:14,527 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 22:35:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-12 22:35:14,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-09-12 22:35:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 22:35:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-09-12 22:35:14,539 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 22 [2024-09-12 22:35:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:14,539 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-09-12 22:35:14,540 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 22:35:14,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-09-12 22:35:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 22:35:14,541 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:14,541 INFO L216 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:14,558 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 22:35:14,742 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 22:35:14,742 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:14,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1587762515, now seen corresponding path program 1 times [2024-09-12 22:35:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340639958] [2024-09-12 22:35:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:14,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:14,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 22:35:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 22:35:14,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340639958] [2024-09-12 22:35:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340639958] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55426596] [2024-09-12 22:35:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:14,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:14,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:14,947 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 22:35:14,949 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 22:35:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:14,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 22:35:14,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 22:35:15,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:35:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 22:35:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55426596] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:35:15,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:35:15,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 21 [2024-09-12 22:35:15,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309713451] [2024-09-12 22:35:15,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:35:15,239 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 22:35:15,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 22:35:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-12 22:35:15,242 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 22:35:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:16,177 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2024-09-12 22:35:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-12 22:35:16,178 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2024-09-12 22:35:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:16,179 INFO L225 Difference]: With dead ends: 110 [2024-09-12 22:35:16,182 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 22:35:16,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=618, Invalid=3542, Unknown=0, NotChecked=0, Total=4160 [2024-09-12 22:35:16,185 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 59 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:16,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 269 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 22:35:16,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 22:35:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-09-12 22:35:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 70 states have internal predecessors, (76), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 22:35:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-09-12 22:35:16,222 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 29 [2024-09-12 22:35:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:16,223 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-09-12 22:35:16,223 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 22:35:16,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-09-12 22:35:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 22:35:16,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:16,228 INFO L216 NwaCegarLoop]: trace histogram [44, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:16,245 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 22:35:16,432 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:16,433 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:16,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1307739729, now seen corresponding path program 2 times [2024-09-12 22:35:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:16,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240855684] [2024-09-12 22:35:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:16,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:16,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 22:35:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:16,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 22:35:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:16,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 22:35:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:16,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 22:35:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 444 proven. 66 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-09-12 22:35:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240855684] [2024-09-12 22:35:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240855684] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751295641] [2024-09-12 22:35:16,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 22:35:16,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:16,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:16,844 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 22:35:16,845 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 22:35:16,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 22:35:16,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:35:16,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 22:35:16,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 8 proven. 931 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-09-12 22:35:17,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:35:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 43 proven. 896 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-09-12 22:35:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751295641] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:35:17,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:35:17,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2024-09-12 22:35:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972162842] [2024-09-12 22:35:17,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:35:17,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 22:35:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 22:35:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 22:35:17,667 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 10 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 22:35:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:21,416 INFO L93 Difference]: Finished difference Result 256 states and 302 transitions. [2024-09-12 22:35:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-09-12 22:35:21,416 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 10 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 87 [2024-09-12 22:35:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:21,418 INFO L225 Difference]: With dead ends: 256 [2024-09-12 22:35:21,418 INFO L226 Difference]: Without dead ends: 181 [2024-09-12 22:35:21,426 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8825 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3165, Invalid=21327, Unknown=0, NotChecked=0, Total=24492 [2024-09-12 22:35:21,427 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 97 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:21,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 537 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 22:35:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-09-12 22:35:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-09-12 22:35:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 163 states have (on average 1.0797546012269938) internal successors, (176), 164 states have internal predecessors, (176), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 22:35:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 202 transitions. [2024-09-12 22:35:21,461 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 202 transitions. Word has length 87 [2024-09-12 22:35:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:21,461 INFO L474 AbstractCegarLoop]: Abstraction has 181 states and 202 transitions. [2024-09-12 22:35:21,462 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 10 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 22:35:21,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 202 transitions. [2024-09-12 22:35:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-09-12 22:35:21,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:21,465 INFO L216 NwaCegarLoop]: trace histogram [120, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:21,483 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 22:35:21,669 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 22:35:21,670 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 709816549, now seen corresponding path program 3 times [2024-09-12 22:35:21,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:21,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362650018] [2024-09-12 22:35:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:21,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 22:35:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 22:35:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 22:35:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 22:35:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 22:35:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 22:35:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 22:35:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 22:35:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 22:35:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-12 22:35:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8730 backedges. 1551 proven. 78 refuted. 0 times theorem prover too weak. 7101 trivial. 0 not checked. [2024-09-12 22:35:22,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:22,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362650018] [2024-09-12 22:35:22,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362650018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:22,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058862477] [2024-09-12 22:35:22,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 22:35:22,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:22,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:22,423 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 22:35:22,425 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 22:35:22,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 22:35:22,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:35:22,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-12 22:35:22,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8730 backedges. 1447 proven. 1548 refuted. 0 times theorem prover too weak. 5735 trivial. 0 not checked. [2024-09-12 22:35:22,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:35:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8730 backedges. 1569 proven. 78 refuted. 0 times theorem prover too weak. 7083 trivial. 0 not checked. [2024-09-12 22:35:22,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058862477] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:35:22,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:35:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-09-12 22:35:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533231549] [2024-09-12 22:35:22,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:35:22,948 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-12 22:35:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-12 22:35:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2024-09-12 22:35:22,959 INFO L87 Difference]: Start difference. First operand 181 states and 202 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 22:35:27,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:35:27,593 INFO L93 Difference]: Finished difference Result 496 states and 678 transitions. [2024-09-12 22:35:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 22:35:27,593 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 211 [2024-09-12 22:35:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:35:27,596 INFO L225 Difference]: With dead ends: 496 [2024-09-12 22:35:27,596 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 22:35:27,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=598, Invalid=1042, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 22:35:27,598 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 22:35:27,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 22:35:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 22:35:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2024-09-12 22:35:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 303 states have (on average 1.0429042904290429) internal successors, (316), 304 states have internal predecessors, (316), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 22:35:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 342 transitions. [2024-09-12 22:35:27,664 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 342 transitions. Word has length 211 [2024-09-12 22:35:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:35:27,664 INFO L474 AbstractCegarLoop]: Abstraction has 321 states and 342 transitions. [2024-09-12 22:35:27,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 22:35:27,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 342 transitions. [2024-09-12 22:35:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-09-12 22:35:27,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:35:27,670 INFO L216 NwaCegarLoop]: trace histogram [260, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:35:27,686 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 22:35:27,874 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:27,875 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:35:27,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:35:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash -434978715, now seen corresponding path program 4 times [2024-09-12 22:35:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:35:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173920451] [2024-09-12 22:35:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:35:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:35:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:35:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 22:35:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 22:35:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 22:35:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 22:35:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 22:35:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-12 22:35:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-12 22:35:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-12 22:35:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-12 22:35:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-12 22:35:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:35:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 36660 backedges. 6591 proven. 351 refuted. 0 times theorem prover too weak. 29718 trivial. 0 not checked. [2024-09-12 22:35:29,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:35:29,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173920451] [2024-09-12 22:35:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173920451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:35:29,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086178220] [2024-09-12 22:35:29,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 22:35:29,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:35:29,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:35:29,579 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 22:35:29,582 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 22:35:29,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 22:35:29,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:35:29,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 22:35:29,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:35:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36660 backedges. 20 proven. 33181 refuted. 0 times theorem prover too weak. 3459 trivial. 0 not checked. [2024-09-12 22:35:30,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:35:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 36660 backedges. 196 proven. 33005 refuted. 0 times theorem prover too weak. 3459 trivial. 0 not checked. [2024-09-12 22:35:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086178220] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:35:32,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:35:32,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 24] total 73 [2024-09-12 22:35:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527096552] [2024-09-12 22:35:32,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:35:32,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 22:35:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:35:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 22:35:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=4559, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 22:35:32,151 INFO L87 Difference]: Start difference. First operand 321 states and 342 transitions. Second operand has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 73 states have internal predecessors, (148), 22 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 22:37:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:37:44,646 INFO L93 Difference]: Finished difference Result 1018 states and 1118 transitions. [2024-09-12 22:37:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 628 states. [2024-09-12 22:37:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 73 states have internal predecessors, (148), 22 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 351 [2024-09-12 22:37:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:37:44,650 INFO L225 Difference]: With dead ends: 1018 [2024-09-12 22:37:44,650 INFO L226 Difference]: Without dead ends: 703 [2024-09-12 22:37:44,730 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 674 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196022 ImplicationChecksByTransitivity, 129.9s TimeCoverageRelationStatistics Valid=29805, Invalid=426495, Unknown=0, NotChecked=0, Total=456300 [2024-09-12 22:37:44,731 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 396 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 11787 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 11823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 11787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-09-12 22:37:44,731 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 870 Invalid, 11823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 11787 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-09-12 22:37:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-09-12 22:37:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-09-12 22:37:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 673 states have (on average 1.037147102526003) internal successors, (698), 674 states have internal predecessors, (698), 26 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 22:37:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 748 transitions. [2024-09-12 22:37:44,826 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 748 transitions. Word has length 351 [2024-09-12 22:37:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:37:44,827 INFO L474 AbstractCegarLoop]: Abstraction has 703 states and 748 transitions. [2024-09-12 22:37:44,827 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.0273972602739727) internal successors, (148), 73 states have internal predecessors, (148), 22 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 22:37:44,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:37:44,828 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 748 transitions. [2024-09-12 22:37:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2024-09-12 22:37:44,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:37:44,845 INFO L216 NwaCegarLoop]: trace histogram [594, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:37:44,864 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 22:37:45,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:37:45,046 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:37:45,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:37:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash 674821009, now seen corresponding path program 5 times [2024-09-12 22:37:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:37:45,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315917728] [2024-09-12 22:37:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:37:45,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:37:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:37:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 22:37:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 22:37:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 22:37:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 22:37:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 22:37:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-12 22:37:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-12 22:37:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-12 22:37:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-12 22:37:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-12 22:37:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-12 22:37:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2024-09-12 22:37:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 22:37:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2024-09-12 22:37:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2024-09-12 22:37:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2024-09-12 22:37:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2024-09-12 22:37:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2024-09-12 22:37:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2024-09-12 22:37:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2024-09-12 22:37:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2024-09-12 22:37:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 770 [2024-09-12 22:37:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:37:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 191103 backedges. 16530 proven. 378 refuted. 0 times theorem prover too weak. 174195 trivial. 0 not checked. [2024-09-12 22:37:48,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:37:48,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315917728] [2024-09-12 22:37:48,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315917728] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:37:48,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418621446] [2024-09-12 22:37:48,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 22:37:48,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:37:48,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:37:48,745 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 22:37:48,746 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 22:37:53,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-09-12 22:37:53,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:37:53,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-12 22:37:53,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:37:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 191103 backedges. 59224 proven. 378 refuted. 0 times theorem prover too weak. 131501 trivial. 0 not checked. [2024-09-12 22:37:54,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:37:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 191103 backedges. 59034 proven. 378 refuted. 0 times theorem prover too weak. 131691 trivial. 0 not checked. [2024-09-12 22:37:55,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418621446] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:37:55,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:37:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 59 [2024-09-12 22:37:55,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353701255] [2024-09-12 22:37:55,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:37:55,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 22:37:55,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:37:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 22:37:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=955, Invalid=2467, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 22:37:55,212 INFO L87 Difference]: Start difference. First operand 703 states and 748 transitions. Second operand has 59 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 22:38:01,177 WARN L293 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 114 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 22:41:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:41:14,974 INFO L93 Difference]: Finished difference Result 2038 states and 2766 transitions. [2024-09-12 22:41:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 22:41:14,975 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 781 [2024-09-12 22:41:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:41:14,981 INFO L225 Difference]: With dead ends: 2038 [2024-09-12 22:41:14,982 INFO L226 Difference]: Without dead ends: 1341 [2024-09-12 22:41:14,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1665 GetRequests, 1581 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 200.5s TimeCoverageRelationStatistics Valid=2548, Invalid=4762, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 22:41:14,984 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 22:41:14,985 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 22:41:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-09-12 22:41:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2024-09-12 22:41:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1311 states have (on average 1.01906941266209) internal successors, (1336), 1312 states have internal predecessors, (1336), 26 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 22:41:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1386 transitions. [2024-09-12 22:41:15,172 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1386 transitions. Word has length 781 [2024-09-12 22:41:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:41:15,173 INFO L474 AbstractCegarLoop]: Abstraction has 1341 states and 1386 transitions. [2024-09-12 22:41:15,173 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 22:41:15,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:41:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1386 transitions. [2024-09-12 22:41:15,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2024-09-12 22:41:15,216 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:41:15,217 INFO L216 NwaCegarLoop]: trace histogram [1232, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:41:15,235 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 22:41:15,417 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:41:15,417 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:41:15,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:41:15,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1148216323, now seen corresponding path program 6 times [2024-09-12 22:41:15,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:41:15,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483499477] [2024-09-12 22:41:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:41:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:41:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:41:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 22:41:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 22:41:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-12 22:41:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-12 22:41:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-12 22:41:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2024-09-12 22:41:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2024-09-12 22:41:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2024-09-12 22:41:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2024-09-12 22:41:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2024-09-12 22:41:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2024-09-12 22:41:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 768 [2024-09-12 22:41:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 832 [2024-09-12 22:41:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 896 [2024-09-12 22:41:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 960 [2024-09-12 22:41:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2024-09-12 22:41:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1088 [2024-09-12 22:41:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1152 [2024-09-12 22:41:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1216 [2024-09-12 22:41:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1280 [2024-09-12 22:41:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1344 [2024-09-12 22:41:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2024-09-12 22:41:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:41:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 787314 backedges. 68295 proven. 1596 refuted. 0 times theorem prover too weak. 717423 trivial. 0 not checked. [2024-09-12 22:41:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:41:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483499477] [2024-09-12 22:41:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483499477] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:41:24,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418405691] [2024-09-12 22:41:24,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 22:41:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:41:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:41:24,488 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 22:41:24,490 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 22:44:58,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2024-09-12 22:44:58,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:44:58,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-09-12 22:44:58,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:44:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 787314 backedges. 244188 proven. 1596 refuted. 0 times theorem prover too weak. 541530 trivial. 0 not checked. [2024-09-12 22:44:58,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:44:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 787314 backedges. 243936 proven. 1272 refuted. 0 times theorem prover too weak. 542106 trivial. 0 not checked. [2024-09-12 22:44:59,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418405691] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:44:59,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:44:59,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 61, 8] total 67 [2024-09-12 22:44:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548164207] [2024-09-12 22:44:59,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:44:59,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 22:44:59,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:44:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 22:44:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4175, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 22:44:59,399 INFO L87 Difference]: Start difference. First operand 1341 states and 1386 transitions. Second operand has 67 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 22:45:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:45:00,828 INFO L93 Difference]: Finished difference Result 2931 states and 3181 transitions. [2024-09-12 22:45:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-12 22:45:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 1419 [2024-09-12 22:45:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:45:00,841 INFO L225 Difference]: With dead ends: 2931 [2024-09-12 22:45:00,841 INFO L226 Difference]: Without dead ends: 1572 [2024-09-12 22:45:00,845 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2944 GetRequests, 2878 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=252, Invalid=4304, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 22:45:00,845 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 3402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 22:45:00,846 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 936 Invalid, 3402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 22:45:00,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-09-12 22:45:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1407. [2024-09-12 22:45:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1377 states have (on average 1.0501089324618735) internal successors, (1446), 1378 states have internal predecessors, (1446), 26 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 22:45:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1496 transitions. [2024-09-12 22:45:01,067 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1496 transitions. Word has length 1419 [2024-09-12 22:45:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:45:01,067 INFO L474 AbstractCegarLoop]: Abstraction has 1407 states and 1496 transitions. [2024-09-12 22:45:01,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 22:45:01,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:45:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1496 transitions. [2024-09-12 22:45:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1442 [2024-09-12 22:45:01,082 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:45:01,083 INFO L216 NwaCegarLoop]: trace histogram [1254, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 22:45:01,104 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 22:45:01,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 22:45:01,284 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:45:01,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:45:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1586286865, now seen corresponding path program 7 times [2024-09-12 22:45:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:45:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560992750] [2024-09-12 22:45:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:45:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:45:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:45:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 22:45:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 22:45:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 22:45:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 22:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-12 22:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2024-09-12 22:45:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-12 22:45:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2024-09-12 22:45:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2024-09-12 22:45:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2024-09-12 22:45:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2024-09-12 22:45:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2024-09-12 22:45:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2024-09-12 22:45:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2024-09-12 22:45:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2024-09-12 22:45:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2024-09-12 22:45:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1105 [2024-09-12 22:45:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1170 [2024-09-12 22:45:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1235 [2024-09-12 22:45:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1300 [2024-09-12 22:45:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1365 [2024-09-12 22:45:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1430 [2024-09-12 22:45:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 815133 backedges. 70710 proven. 1653 refuted. 0 times theorem prover too weak. 742770 trivial. 0 not checked. [2024-09-12 22:45:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:45:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560992750] [2024-09-12 22:45:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560992750] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:45:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558883275] [2024-09-12 22:45:09,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 22:45:09,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:45:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:45:09,165 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 22:45:09,166 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 22:45:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:45:09,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 4141 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 22:45:09,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:45:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 815133 backedges. 44 proven. 778857 refuted. 0 times theorem prover too weak. 36232 trivial. 0 not checked. [2024-09-12 22:45:13,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:45:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 815133 backedges. 849 proven. 778052 refuted. 0 times theorem prover too weak. 36232 trivial. 0 not checked. [2024-09-12 22:45:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558883275] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:45:19,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:45:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 48, 48] total 152 [2024-09-12 22:45:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560356006] [2024-09-12 22:45:19,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:45:19,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2024-09-12 22:45:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:45:19,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2024-09-12 22:45:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2566, Invalid=20386, Unknown=0, NotChecked=0, Total=22952 [2024-09-12 22:45:19,450 INFO L87 Difference]: Start difference. First operand 1407 states and 1496 transitions. Second operand has 152 states, 152 states have (on average 1.9671052631578947) internal successors, (299), 152 states have internal predecessors, (299), 46 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Killed by 15