./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:07:30,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:07:30,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:07:30,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:07:30,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:07:30,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:07:30,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:07:30,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:07:30,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:07:30,259 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:07:30,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:07:30,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:07:30,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:07:30,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:07:30,278 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:07:30,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:07:30,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:07:30,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:07:30,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:07:30,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:07:30,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:07:30,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:07:30,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:07:30,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:07:30,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:07:30,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:07:30,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:07:30,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:07:30,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:07:30,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:07:30,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:07:30,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:07:30,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:07:30,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:07:30,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:07:30,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:07:30,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:07:30,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:07:30,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:07:30,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:07:30,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:07:30,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:07:30,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:07:30,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:07:30,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:07:30,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:07:30,583 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:07:30,583 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:07:30,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-13 03:07:32,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:07:32,197 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:07:32,198 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-13 03:07:32,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c8bb13d78/877b317f30d64cd3a020508a7e6f7def/FLAG51853283d [2024-09-13 03:07:32,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c8bb13d78/877b317f30d64cd3a020508a7e6f7def [2024-09-13 03:07:32,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:07:32,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:07:32,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:07:32,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:07:32,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:07:32,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24794ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32, skipping insertion in model container [2024-09-13 03:07:32,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:07:32,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-09-13 03:07:32,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:07:32,392 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:07:32,406 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-09-13 03:07:32,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:07:32,421 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:07:32,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32 WrapperNode [2024-09-13 03:07:32,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:07:32,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:07:32,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:07:32,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:07:32,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,448 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:07:32,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:07:32,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:07:32,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:07:32,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:07:32,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,479 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 03:07:32,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:07:32,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:07:32,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:07:32,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:07:32,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (1/1) ... [2024-09-13 03:07:32,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:07:32,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:32,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 03:07:32,517 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 03:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-09-13 03:07:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-09-13 03:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:07:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:07:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-09-13 03:07:32,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-09-13 03:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:07:32,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:07:32,634 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:07:32,636 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:07:32,747 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-13 03:07:32,747 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:07:32,762 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:07:32,763 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:07:32,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:07:32 BoogieIcfgContainer [2024-09-13 03:07:32,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:07:32,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:07:32,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:07:32,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:07:32,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:07:32" (1/3) ... [2024-09-13 03:07:32,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23901e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:07:32, skipping insertion in model container [2024-09-13 03:07:32,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:07:32" (2/3) ... [2024-09-13 03:07:32,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23901e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:07:32, skipping insertion in model container [2024-09-13 03:07:32,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:07:32" (3/3) ... [2024-09-13 03:07:32,770 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-09-13 03:07:32,785 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:07:32,786 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:07:32,829 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:07:32,834 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;@3c1e5f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:07:32,834 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:07:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 03:07:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 03:07:32,843 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:32,843 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:32,844 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:32,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1991504062, now seen corresponding path program 1 times [2024-09-13 03:07:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447981504] [2024-09-13 03:07:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:33,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:33,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:07:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:33,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447981504] [2024-09-13 03:07:33,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447981504] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:33,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:33,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 03:07:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120637071] [2024-09-13 03:07:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:33,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 03:07:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 03:07:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:07:33,557 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 03:07:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:33,666 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-09-13 03:07:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 03:07:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-13 03:07:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:33,674 INFO L225 Difference]: With dead ends: 41 [2024-09-13 03:07:33,674 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 03:07:33,676 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:07:33,679 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:33,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 03:07:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-13 03:07:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 03:07:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 03:07:33,721 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2024-09-13 03:07:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:33,722 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 03:07:33,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 03:07:33,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 03:07:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 03:07:33,724 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:33,724 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:33,725 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:07:33,725 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:33,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1940222656, now seen corresponding path program 1 times [2024-09-13 03:07:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519801424] [2024-09-13 03:07:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:33,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:07:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519801424] [2024-09-13 03:07:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519801424] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 03:07:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818648156] [2024-09-13 03:07:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:34,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 03:07:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 03:07:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:07:34,124 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 03:07:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:34,182 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-13 03:07:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 03:07:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-13 03:07:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:34,184 INFO L225 Difference]: With dead ends: 33 [2024-09-13 03:07:34,184 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 03:07:34,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:07:34,185 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:34,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 03:07:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 03:07:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-13 03:07:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 03:07:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 03:07:34,196 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2024-09-13 03:07:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:34,196 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 03:07:34,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 03:07:34,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 03:07:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 03:07:34,199 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:34,199 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:34,200 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 03:07:34,201 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:34,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2009952378, now seen corresponding path program 1 times [2024-09-13 03:07:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135158153] [2024-09-13 03:07:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:07:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135158153] [2024-09-13 03:07:34,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135158153] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:34,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:07:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902262529] [2024-09-13 03:07:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:34,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:07:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:07:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:07:34,306 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:07:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:34,345 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-13 03:07:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 03:07:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-13 03:07:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:34,347 INFO L225 Difference]: With dead ends: 41 [2024-09-13 03:07:34,347 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 03:07:34,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:07:34,348 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:34,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 03:07:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 03:07:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-13 03:07:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 03:07:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-13 03:07:34,361 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2024-09-13 03:07:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:34,362 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-13 03:07:34,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:07:34,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-13 03:07:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:07:34,364 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:34,364 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:34,364 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 03:07:34,364 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:34,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash 380134900, now seen corresponding path program 1 times [2024-09-13 03:07:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226053743] [2024-09-13 03:07:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:07:34,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:34,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226053743] [2024-09-13 03:07:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226053743] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:34,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:34,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-13 03:07:34,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147111446] [2024-09-13 03:07:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:34,684 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 03:07:34,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 03:07:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-13 03:07:34,684 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:07:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:34,812 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-09-13 03:07:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:07:34,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-13 03:07:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:34,814 INFO L225 Difference]: With dead ends: 36 [2024-09-13 03:07:34,814 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 03:07:34,814 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-13 03:07:34,815 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:34,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 03:07:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 03:07:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 03:07:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-13 03:07:34,828 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2024-09-13 03:07:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:34,828 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-13 03:07:34,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:07:34,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-13 03:07:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-13 03:07:34,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:34,830 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:34,830 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 03:07:34,830 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:34,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1592992894, now seen corresponding path program 1 times [2024-09-13 03:07:34,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:34,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832686311] [2024-09-13 03:07:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:34,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:07:34,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:34,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832686311] [2024-09-13 03:07:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832686311] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:07:34,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:07:34,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:07:34,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898366552] [2024-09-13 03:07:34,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:07:34,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:07:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:07:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:07:34,904 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 03:07:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:34,938 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-13 03:07:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 03:07:34,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-13 03:07:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:34,939 INFO L225 Difference]: With dead ends: 44 [2024-09-13 03:07:34,939 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 03:07:34,940 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:07:34,940 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:34,941 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 03:07:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 03:07:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 03:07:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 03:07:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-13 03:07:34,947 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2024-09-13 03:07:34,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:34,948 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-13 03:07:34,948 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 03:07:34,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,948 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-13 03:07:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 03:07:34,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:34,949 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:34,949 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 03:07:34,949 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:34,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:34,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2012013244, now seen corresponding path program 1 times [2024-09-13 03:07:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889341558] [2024-09-13 03:07:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:34,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:07:35,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889341558] [2024-09-13 03:07:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889341558] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122636788] [2024-09-13 03:07:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:35,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:35,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:35,346 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:07:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:35,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-13 03:07:35,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 03:07:35,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:07:36,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122636788] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:36,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:36,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-09-13 03:07:36,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473150758] [2024-09-13 03:07:36,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:36,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 03:07:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 03:07:36,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-09-13 03:07:36,152 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-13 03:07:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:36,359 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-09-13 03:07:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 03:07:36,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 29 [2024-09-13 03:07:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:36,360 INFO L225 Difference]: With dead ends: 42 [2024-09-13 03:07:36,360 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 03:07:36,361 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-09-13 03:07:36,361 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:36,362 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:07:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 03:07:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-09-13 03:07:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 03:07:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-09-13 03:07:36,370 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2024-09-13 03:07:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:36,370 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-09-13 03:07:36,370 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-13 03:07:36,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-09-13 03:07:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 03:07:36,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:36,371 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:36,387 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 03:07:36,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 03:07:36,576 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:36,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 537295668, now seen corresponding path program 1 times [2024-09-13 03:07:36,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:36,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745896407] [2024-09-13 03:07:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 03:07:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:36,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745896407] [2024-09-13 03:07:36,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745896407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173530646] [2024-09-13 03:07:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:36,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:36,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:36,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:36,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 03:07:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:37,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-13 03:07:37,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-13 03:07:37,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 03:07:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173530646] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:37,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-09-13 03:07:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040230090] [2024-09-13 03:07:37,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:37,727 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 03:07:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 03:07:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-09-13 03:07:37,728 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-13 03:07:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:38,052 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-09-13 03:07:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 03:07:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 36 [2024-09-13 03:07:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:38,054 INFO L225 Difference]: With dead ends: 48 [2024-09-13 03:07:38,054 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 03:07:38,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-09-13 03:07:38,055 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:38,055 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 299 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:07:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 03:07:38,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-09-13 03:07:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 03:07:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-09-13 03:07:38,066 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2024-09-13 03:07:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:38,066 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-09-13 03:07:38,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-13 03:07:38,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-09-13 03:07:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 03:07:38,070 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:38,070 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:38,082 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 03:07:38,272 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 03:07:38,272 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:38,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2054135496, now seen corresponding path program 2 times [2024-09-13 03:07:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:38,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443732042] [2024-09-13 03:07:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 03:07:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443732042] [2024-09-13 03:07:38,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443732042] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:38,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918966548] [2024-09-13 03:07:38,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:07:38,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:38,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:38,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:38,798 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 03:07:38,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:07:38,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:38,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-13 03:07:38,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-13 03:07:38,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 03:07:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918966548] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:39,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:39,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2024-09-13 03:07:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241882714] [2024-09-13 03:07:39,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:39,691 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 03:07:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 03:07:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:07:39,693 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-13 03:07:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:39,948 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-09-13 03:07:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 03:07:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 43 [2024-09-13 03:07:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:39,949 INFO L225 Difference]: With dead ends: 54 [2024-09-13 03:07:39,949 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 03:07:39,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 03:07:39,951 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:39,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 289 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:07:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 03:07:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2024-09-13 03:07:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 03:07:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-13 03:07:39,969 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2024-09-13 03:07:39,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:39,969 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-13 03:07:39,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-13 03:07:39,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-13 03:07:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 03:07:39,972 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:39,972 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:39,989 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 03:07:40,172 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-13 03:07:40,172 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:40,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:40,173 INFO L85 PathProgramCache]: Analyzing trace with hash 620923892, now seen corresponding path program 2 times [2024-09-13 03:07:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:40,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996646448] [2024-09-13 03:07:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:40,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 03:07:40,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996646448] [2024-09-13 03:07:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996646448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206624555] [2024-09-13 03:07:40,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:07:40,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:40,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:40,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 03:07:40,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:07:40,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:40,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-13 03:07:40,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 03:07:40,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:07:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206624555] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:41,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:41,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-09-13 03:07:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700331006] [2024-09-13 03:07:41,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:41,730 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-13 03:07:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-13 03:07:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-09-13 03:07:41,731 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-13 03:07:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:42,085 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-09-13 03:07:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 03:07:42,085 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) Word has length 50 [2024-09-13 03:07:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:42,087 INFO L225 Difference]: With dead ends: 60 [2024-09-13 03:07:42,087 INFO L226 Difference]: Without dead ends: 56 [2024-09-13 03:07:42,088 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 03:07:42,089 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:42,089 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 359 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:07:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-13 03:07:42,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2024-09-13 03:07:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-13 03:07:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-09-13 03:07:42,102 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 50 [2024-09-13 03:07:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:42,104 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-09-13 03:07:42,104 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-13 03:07:42,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-09-13 03:07:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-13 03:07:42,106 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:42,106 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:42,124 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 03:07:42,312 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:42,312 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:42,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash -583855668, now seen corresponding path program 3 times [2024-09-13 03:07:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:42,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32433310] [2024-09-13 03:07:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:42,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-13 03:07:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32433310] [2024-09-13 03:07:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32433310] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928074275] [2024-09-13 03:07:42,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:07:42,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:42,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:42,990 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 03:07:43,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 03:07:43,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:43,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-13 03:07:43,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-13 03:07:43,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-13 03:07:44,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928074275] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:44,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2024-09-13 03:07:44,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267200377] [2024-09-13 03:07:44,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:44,163 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-13 03:07:44,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-13 03:07:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 03:07:44,164 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-13 03:07:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:44,533 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2024-09-13 03:07:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 03:07:44,534 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 57 [2024-09-13 03:07:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:44,537 INFO L225 Difference]: With dead ends: 66 [2024-09-13 03:07:44,538 INFO L226 Difference]: Without dead ends: 62 [2024-09-13 03:07:44,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 03:07:44,539 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:44,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 396 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:07:44,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-13 03:07:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2024-09-13 03:07:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 10 states have return successors, (11), 10 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-13 03:07:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-09-13 03:07:44,558 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 57 [2024-09-13 03:07:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:44,559 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-09-13 03:07:44,560 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-13 03:07:44,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-09-13 03:07:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-13 03:07:44,561 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:44,562 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:44,578 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 03:07:44,765 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 03:07:44,766 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:44,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -472917964, now seen corresponding path program 3 times [2024-09-13 03:07:44,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183657089] [2024-09-13 03:07:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:44,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:44,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:44,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-13 03:07:45,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183657089] [2024-09-13 03:07:45,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183657089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:45,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670628254] [2024-09-13 03:07:45,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:07:45,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:45,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:45,508 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 03:07:45,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 03:07:45,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:45,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-13 03:07:45,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 03:07:45,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 03:07:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670628254] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:46,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:46,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-09-13 03:07:46,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148587638] [2024-09-13 03:07:46,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:46,728 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-13 03:07:46,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:46,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-13 03:07:46,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 03:07:46,730 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-13 03:07:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:47,191 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2024-09-13 03:07:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-13 03:07:47,191 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 64 [2024-09-13 03:07:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:47,194 INFO L225 Difference]: With dead ends: 72 [2024-09-13 03:07:47,194 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 03:07:47,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-09-13 03:07:47,195 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:47,195 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 479 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:07:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 03:07:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2024-09-13 03:07:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 11 states have return successors, (12), 11 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 03:07:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-09-13 03:07:47,219 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 64 [2024-09-13 03:07:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:47,220 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-09-13 03:07:47,220 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-13 03:07:47,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-09-13 03:07:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-13 03:07:47,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:47,221 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:47,240 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:47,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 03:07:47,423 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:47,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:47,424 INFO L85 PathProgramCache]: Analyzing trace with hash 749237840, now seen corresponding path program 4 times [2024-09-13 03:07:47,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:47,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571167388] [2024-09-13 03:07:47,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:47,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:47,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:47,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:47,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:47,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:47,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:47,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:48,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:48,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:48,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:48,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 03:07:48,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571167388] [2024-09-13 03:07:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571167388] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332611096] [2024-09-13 03:07:48,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:07:48,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:48,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:48,320 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 03:07:48,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:07:48,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:48,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-13 03:07:48,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 03:07:48,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 03:07:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332611096] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:49,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2024-09-13 03:07:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962310975] [2024-09-13 03:07:49,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:49,885 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-13 03:07:49,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-13 03:07:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 03:07:49,886 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-13 03:07:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:50,413 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-09-13 03:07:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 03:07:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 71 [2024-09-13 03:07:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:50,414 INFO L225 Difference]: With dead ends: 78 [2024-09-13 03:07:50,414 INFO L226 Difference]: Without dead ends: 74 [2024-09-13 03:07:50,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2024-09-13 03:07:50,415 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:50,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 580 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:07:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-13 03:07:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2024-09-13 03:07:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 12 states have return successors, (13), 12 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 03:07:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-09-13 03:07:50,430 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 71 [2024-09-13 03:07:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:50,430 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-09-13 03:07:50,430 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-13 03:07:50,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-09-13 03:07:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-13 03:07:50,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:50,432 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:50,444 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:50,634 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:50,635 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:50,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1701421044, now seen corresponding path program 4 times [2024-09-13 03:07:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355282689] [2024-09-13 03:07:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:50,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:50,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:50,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-09-13 03:07:51,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:51,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355282689] [2024-09-13 03:07:51,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355282689] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:51,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749754116] [2024-09-13 03:07:51,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:07:51,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:51,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:51,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:51,642 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 03:07:51,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:07:51,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:51,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-13 03:07:51,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-13 03:07:51,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-13 03:07:53,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749754116] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:53,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:53,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-09-13 03:07:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995331838] [2024-09-13 03:07:53,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:53,374 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-13 03:07:53,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-13 03:07:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-09-13 03:07:53,376 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-13 03:07:54,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:54,036 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2024-09-13 03:07:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-13 03:07:54,036 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) Word has length 78 [2024-09-13 03:07:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:54,037 INFO L225 Difference]: With dead ends: 84 [2024-09-13 03:07:54,038 INFO L226 Difference]: Without dead ends: 80 [2024-09-13 03:07:54,040 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-09-13 03:07:54,040 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:54,042 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 559 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:07:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-13 03:07:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2024-09-13 03:07:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 13 states have return successors, (14), 13 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-13 03:07:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-09-13 03:07:54,061 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 78 [2024-09-13 03:07:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:54,061 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-09-13 03:07:54,061 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-13 03:07:54,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-09-13 03:07:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-13 03:07:54,062 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:54,062 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:54,079 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:54,266 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:54,267 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:54,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:54,267 INFO L85 PathProgramCache]: Analyzing trace with hash -475870124, now seen corresponding path program 5 times [2024-09-13 03:07:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130403886] [2024-09-13 03:07:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:54,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:54,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:54,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:54,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:54,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:54,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-13 03:07:55,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130403886] [2024-09-13 03:07:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130403886] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400788762] [2024-09-13 03:07:55,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:07:55,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:55,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:55,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:55,452 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 03:07:55,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-13 03:07:55,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:55,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-13 03:07:55,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-13 03:07:55,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 03:07:57,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400788762] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:57,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:57,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2024-09-13 03:07:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320193179] [2024-09-13 03:07:57,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:57,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-13 03:07:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-13 03:07:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 03:07:57,344 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-13 03:07:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:57,986 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-09-13 03:07:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 03:07:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) Word has length 85 [2024-09-13 03:07:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:57,987 INFO L225 Difference]: With dead ends: 90 [2024-09-13 03:07:57,987 INFO L226 Difference]: Without dead ends: 86 [2024-09-13 03:07:57,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=364, Invalid=3926, Unknown=0, NotChecked=0, Total=4290 [2024-09-13 03:07:57,989 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:57,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 637 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:07:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-13 03:07:58,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2024-09-13 03:07:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 5 states have call successors, (5), 4 states have call predecessors, (5), 14 states have return successors, (15), 14 states have call predecessors, (15), 4 states have call successors, (15) [2024-09-13 03:07:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-09-13 03:07:58,012 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 85 [2024-09-13 03:07:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:58,012 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-09-13 03:07:58,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-13 03:07:58,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-09-13 03:07:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-13 03:07:58,014 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:58,014 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:07:58,030 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:58,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 03:07:58,218 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:58,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2053954764, now seen corresponding path program 5 times [2024-09-13 03:07:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:58,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916431606] [2024-09-13 03:07:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:58,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:58,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:58,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:07:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:58,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:58,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:58,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:58,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-13 03:07:59,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916431606] [2024-09-13 03:07:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916431606] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544173553] [2024-09-13 03:07:59,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:07:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:59,505 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:59,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 03:07:59,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-13 03:07:59,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:59,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-13 03:07:59,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 03:07:59,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-13 03:08:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544173553] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:01,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-09-13 03:08:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549171128] [2024-09-13 03:08:01,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:01,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-13 03:08:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-13 03:08:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-09-13 03:08:01,677 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-13 03:08:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:02,505 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2024-09-13 03:08:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-13 03:08:02,506 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) Word has length 92 [2024-09-13 03:08:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:02,507 INFO L225 Difference]: With dead ends: 96 [2024-09-13 03:08:02,507 INFO L226 Difference]: Without dead ends: 92 [2024-09-13 03:08:02,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-09-13 03:08:02,509 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:02,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 667 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:08:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-13 03:08:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2024-09-13 03:08:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 5 states have call successors, (5), 4 states have call predecessors, (5), 15 states have return successors, (16), 15 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-13 03:08:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-09-13 03:08:02,532 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 92 [2024-09-13 03:08:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:02,533 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-09-13 03:08:02,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-13 03:08:02,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:02,533 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-09-13 03:08:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-13 03:08:02,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:02,534 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:02,545 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 03:08:02,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 03:08:02,734 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:02,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash -142797864, now seen corresponding path program 6 times [2024-09-13 03:08:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365614387] [2024-09-13 03:08:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:02,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:02,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:03,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:04,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:04,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-13 03:08:04,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:04,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365614387] [2024-09-13 03:08:04,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365614387] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:04,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074218348] [2024-09-13 03:08:04,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:08:04,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:04,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:04,140 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:04,141 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 03:08:04,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-13 03:08:04,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:04,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-09-13 03:08:04,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-09-13 03:08:04,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-13 03:08:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074218348] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:06,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:06,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2024-09-13 03:08:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894388567] [2024-09-13 03:08:06,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:06,599 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-13 03:08:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-13 03:08:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2024-09-13 03:08:06,601 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-13 03:08:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:07,430 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2024-09-13 03:08:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-13 03:08:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 99 [2024-09-13 03:08:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:07,431 INFO L225 Difference]: With dead ends: 102 [2024-09-13 03:08:07,431 INFO L226 Difference]: Without dead ends: 98 [2024-09-13 03:08:07,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2024-09-13 03:08:07,433 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:07,433 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 691 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:08:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-13 03:08:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 63. [2024-09-13 03:08:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 16 states have return successors, (17), 16 states have call predecessors, (17), 4 states have call successors, (17) [2024-09-13 03:08:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-09-13 03:08:07,462 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 99 [2024-09-13 03:08:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:07,462 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-09-13 03:08:07,462 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-13 03:08:07,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-09-13 03:08:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-13 03:08:07,464 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:07,464 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:07,479 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:07,664 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 03:08:07,664 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:07,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash -86531596, now seen corresponding path program 6 times [2024-09-13 03:08:07,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:07,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11127195] [2024-09-13 03:08:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:07,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:07,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:07,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:08,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:09,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:09,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:09,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:09,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-09-13 03:08:09,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11127195] [2024-09-13 03:08:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11127195] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524322096] [2024-09-13 03:08:09,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:08:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:09,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:09,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 03:08:09,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-13 03:08:09,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:09,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-13 03:08:09,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-13 03:08:09,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-13 03:08:12,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524322096] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:12,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:12,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 55 [2024-09-13 03:08:12,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472384821] [2024-09-13 03:08:12,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:12,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-13 03:08:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-13 03:08:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-09-13 03:08:12,103 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-13 03:08:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:13,059 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2024-09-13 03:08:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-13 03:08:13,059 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) Word has length 106 [2024-09-13 03:08:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:13,060 INFO L225 Difference]: With dead ends: 108 [2024-09-13 03:08:13,060 INFO L226 Difference]: Without dead ends: 104 [2024-09-13 03:08:13,062 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2024-09-13 03:08:13,062 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:13,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 773 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 03:08:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-13 03:08:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2024-09-13 03:08:13,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 17 states have return successors, (18), 17 states have call predecessors, (18), 4 states have call successors, (18) [2024-09-13 03:08:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-09-13 03:08:13,085 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2024-09-13 03:08:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:13,085 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-09-13 03:08:13,085 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-13 03:08:13,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:13,086 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-09-13 03:08:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-13 03:08:13,086 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:13,086 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:13,103 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 03:08:13,287 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-13 03:08:13,287 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:13,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -736473892, now seen corresponding path program 7 times [2024-09-13 03:08:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:13,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481076423] [2024-09-13 03:08:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:13,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:13,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:13,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:13,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:13,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-13 03:08:14,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481076423] [2024-09-13 03:08:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481076423] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395496183] [2024-09-13 03:08:14,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:08:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:14,913 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:14,915 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 03:08:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:15,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-13 03:08:15,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-09-13 03:08:15,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-13 03:08:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395496183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:18,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:18,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2024-09-13 03:08:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696863885] [2024-09-13 03:08:18,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:18,003 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-13 03:08:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-13 03:08:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2024-09-13 03:08:18,005 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-13 03:08:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:19,032 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-09-13 03:08:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-13 03:08:19,033 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) Word has length 113 [2024-09-13 03:08:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:19,034 INFO L225 Difference]: With dead ends: 114 [2024-09-13 03:08:19,034 INFO L226 Difference]: Without dead ends: 110 [2024-09-13 03:08:19,036 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=548, Invalid=6762, Unknown=0, NotChecked=0, Total=7310 [2024-09-13 03:08:19,037 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:19,037 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 862 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 03:08:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-13 03:08:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2024-09-13 03:08:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 18 states have return successors, (19), 18 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-13 03:08:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-09-13 03:08:19,066 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 113 [2024-09-13 03:08:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:19,067 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-09-13 03:08:19,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-13 03:08:19,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-09-13 03:08:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-13 03:08:19,068 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:19,068 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:19,079 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:19,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-13 03:08:19,268 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -561357772, now seen corresponding path program 7 times [2024-09-13 03:08:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:19,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145299716] [2024-09-13 03:08:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:19,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:19,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:19,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:19,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:19,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-13 03:08:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145299716] [2024-09-13 03:08:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145299716] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898139991] [2024-09-13 03:08:20,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:08:20,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:20,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:20,907 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 03:08:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:20,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-13 03:08:21,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-09-13 03:08:21,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-13 03:08:24,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898139991] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:24,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:24,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-09-13 03:08:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149482518] [2024-09-13 03:08:24,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:24,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-13 03:08:24,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:24,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-13 03:08:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-09-13 03:08:24,533 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-13 03:08:25,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:25,721 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-09-13 03:08:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 03:08:25,721 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) Word has length 120 [2024-09-13 03:08:25,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:25,735 INFO L225 Difference]: With dead ends: 120 [2024-09-13 03:08:25,736 INFO L226 Difference]: Without dead ends: 116 [2024-09-13 03:08:25,738 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-09-13 03:08:25,738 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:25,738 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 909 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 03:08:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-13 03:08:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 72. [2024-09-13 03:08:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 19 states have return successors, (20), 19 states have call predecessors, (20), 4 states have call successors, (20) [2024-09-13 03:08:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-09-13 03:08:25,770 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 120 [2024-09-13 03:08:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:25,771 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-09-13 03:08:25,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-13 03:08:25,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-09-13 03:08:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-13 03:08:25,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:25,772 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:25,785 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:25,972 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:25,972 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:25,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -672827552, now seen corresponding path program 8 times [2024-09-13 03:08:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:25,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774079584] [2024-09-13 03:08:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:25,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:26,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 03:08:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774079584] [2024-09-13 03:08:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774079584] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503350413] [2024-09-13 03:08:27,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:08:27,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:27,871 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:27,873 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-13 03:08:27,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:08:27,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:27,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-13 03:08:27,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-09-13 03:08:28,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-13 03:08:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503350413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:31,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:31,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2024-09-13 03:08:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143825728] [2024-09-13 03:08:31,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:31,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-13 03:08:31,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-13 03:08:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2024-09-13 03:08:31,799 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-13 03:08:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:33,163 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2024-09-13 03:08:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-13 03:08:33,164 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) Word has length 127 [2024-09-13 03:08:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:33,165 INFO L225 Difference]: With dead ends: 126 [2024-09-13 03:08:33,165 INFO L226 Difference]: Without dead ends: 122 [2024-09-13 03:08:33,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=652, Invalid=8468, Unknown=0, NotChecked=0, Total=9120 [2024-09-13 03:08:33,166 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 90 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:33,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1206 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 03:08:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-13 03:08:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2024-09-13 03:08:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 20 states have return successors, (21), 20 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-13 03:08:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-09-13 03:08:33,204 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 127 [2024-09-13 03:08:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:33,204 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-09-13 03:08:33,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-13 03:08:33,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-09-13 03:08:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-13 03:08:33,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:33,205 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:33,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:33,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:33,405 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1262054924, now seen corresponding path program 8 times [2024-09-13 03:08:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795865797] [2024-09-13 03:08:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:33,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:33,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:33,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:33,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:34,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-13 03:08:35,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:35,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795865797] [2024-09-13 03:08:35,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795865797] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:35,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084586166] [2024-09-13 03:08:35,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:08:35,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:35,425 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:35,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-13 03:08:35,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:08:35,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:35,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-09-13 03:08:35,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-09-13 03:08:35,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 03:08:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084586166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:39,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-09-13 03:08:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904598374] [2024-09-13 03:08:39,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:39,732 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-13 03:08:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-13 03:08:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-09-13 03:08:39,733 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-13 03:08:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:41,185 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2024-09-13 03:08:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-13 03:08:41,186 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) Word has length 134 [2024-09-13 03:08:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:41,187 INFO L225 Difference]: With dead ends: 132 [2024-09-13 03:08:41,187 INFO L226 Difference]: Without dead ends: 128 [2024-09-13 03:08:41,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-09-13 03:08:41,188 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:41,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1210 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 03:08:41,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-13 03:08:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2024-09-13 03:08:41,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 21 states have return successors, (22), 21 states have call predecessors, (22), 4 states have call successors, (22) [2024-09-13 03:08:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-09-13 03:08:41,232 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 134 [2024-09-13 03:08:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:41,232 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-09-13 03:08:41,233 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-13 03:08:41,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-09-13 03:08:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-13 03:08:41,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:41,233 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:41,246 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:41,434 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:41,434 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1339134820, now seen corresponding path program 9 times [2024-09-13 03:08:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538843207] [2024-09-13 03:08:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:41,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:41,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:41,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:42,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-13 03:08:43,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:43,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538843207] [2024-09-13 03:08:43,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538843207] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:43,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252921100] [2024-09-13 03:08:43,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:08:43,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:43,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:43,772 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:43,773 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-13 03:08:43,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-13 03:08:43,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:43,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-09-13 03:08:43,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-09-13 03:08:44,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-13 03:08:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252921100] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:48,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2024-09-13 03:08:48,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430100819] [2024-09-13 03:08:48,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:48,511 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-13 03:08:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-13 03:08:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2024-09-13 03:08:48,513 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-13 03:08:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:50,012 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2024-09-13 03:08:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-13 03:08:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) Word has length 141 [2024-09-13 03:08:50,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:50,017 INFO L225 Difference]: With dead ends: 138 [2024-09-13 03:08:50,017 INFO L226 Difference]: Without dead ends: 134 [2024-09-13 03:08:50,020 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=764, Invalid=10366, Unknown=0, NotChecked=0, Total=11130 [2024-09-13 03:08:50,020 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:50,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1338 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 03:08:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-13 03:08:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 81. [2024-09-13 03:08:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 22 states have return successors, (23), 22 states have call predecessors, (23), 4 states have call successors, (23) [2024-09-13 03:08:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-09-13 03:08:50,082 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 141 [2024-09-13 03:08:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:50,082 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-09-13 03:08:50,082 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-13 03:08:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-09-13 03:08:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-13 03:08:50,083 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:50,083 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:50,095 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-13 03:08:50,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:50,284 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:50,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash -194018508, now seen corresponding path program 9 times [2024-09-13 03:08:50,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:50,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205110455] [2024-09-13 03:08:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:50,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:50,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:08:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:50,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:08:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:50,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:51,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:08:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:08:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-09-13 03:08:52,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:08:52,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205110455] [2024-09-13 03:08:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205110455] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:08:52,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684277293] [2024-09-13 03:08:52,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:08:52,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:08:52,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:08:52,909 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:08:52,910 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-13 03:08:53,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-13 03:08:53,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:08:53,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-09-13 03:08:53,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:08:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-09-13 03:08:53,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:08:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-13 03:08:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684277293] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:08:58,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:08:58,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-09-13 03:08:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082885191] [2024-09-13 03:08:58,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:08:58,007 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-13 03:08:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:08:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-13 03:08:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-09-13 03:08:58,008 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-13 03:08:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:08:59,704 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2024-09-13 03:08:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-13 03:08:59,704 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) Word has length 148 [2024-09-13 03:08:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:08:59,705 INFO L225 Difference]: With dead ends: 144 [2024-09-13 03:08:59,705 INFO L226 Difference]: Without dead ends: 140 [2024-09-13 03:08:59,707 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-09-13 03:08:59,708 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:08:59,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1175 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 03:08:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-13 03:08:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2024-09-13 03:08:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 23 states have return successors, (24), 23 states have call predecessors, (24), 4 states have call successors, (24) [2024-09-13 03:08:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-09-13 03:08:59,768 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 148 [2024-09-13 03:08:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:08:59,768 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-09-13 03:08:59,768 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-13 03:08:59,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-09-13 03:08:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-09-13 03:08:59,769 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:08:59,769 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:08:59,782 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-13 03:08:59,970 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-13 03:08:59,970 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:08:59,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:08:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -212229912, now seen corresponding path program 10 times [2024-09-13 03:08:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:08:59,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577847402] [2024-09-13 03:08:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:08:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:08:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:00,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:00,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:09:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:00,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:00,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:00,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:01,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-09-13 03:09:02,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:02,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577847402] [2024-09-13 03:09:02,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577847402] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:02,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99497120] [2024-09-13 03:09:02,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:09:02,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:02,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:02,911 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:02,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-13 03:09:03,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:09:03,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:03,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-09-13 03:09:03,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-09-13 03:09:03,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-13 03:09:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99497120] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:08,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:08,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2024-09-13 03:09:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649033784] [2024-09-13 03:09:08,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:08,403 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-13 03:09:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-13 03:09:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2024-09-13 03:09:08,405 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-13 03:09:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:10,231 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-09-13 03:09:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-13 03:09:10,232 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) Word has length 155 [2024-09-13 03:09:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:10,233 INFO L225 Difference]: With dead ends: 150 [2024-09-13 03:09:10,233 INFO L226 Difference]: Without dead ends: 146 [2024-09-13 03:09:10,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=884, Invalid=12456, Unknown=0, NotChecked=0, Total=13340 [2024-09-13 03:09:10,235 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 90 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:10,235 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1523 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-13 03:09:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-13 03:09:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2024-09-13 03:09:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 24 states have return successors, (25), 24 states have call predecessors, (25), 4 states have call successors, (25) [2024-09-13 03:09:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-09-13 03:09:10,292 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 155 [2024-09-13 03:09:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:10,293 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-09-13 03:09:10,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-13 03:09:10,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-09-13 03:09:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-09-13 03:09:10,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:10,294 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:09:10,307 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-13 03:09:10,494 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-13 03:09:10,495 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:10,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash 254832628, now seen corresponding path program 10 times [2024-09-13 03:09:10,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:10,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150579398] [2024-09-13 03:09:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:10,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:10,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:10,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:09:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:11,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:11,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:11,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:11,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:11,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:11,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:12,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-13 03:09:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150579398] [2024-09-13 03:09:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150579398] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270328003] [2024-09-13 03:09:13,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:09:13,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:13,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:13,638 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:13,638 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-13 03:09:13,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:09:13,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:13,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-09-13 03:09:13,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-09-13 03:09:14,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-09-13 03:09:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270328003] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:19,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2024-09-13 03:09:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001641823] [2024-09-13 03:09:19,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:19,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-13 03:09:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-13 03:09:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5738, Unknown=0, NotChecked=0, Total=6006 [2024-09-13 03:09:19,607 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-13 03:09:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:21,609 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2024-09-13 03:09:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-13 03:09:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) Word has length 162 [2024-09-13 03:09:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:21,610 INFO L225 Difference]: With dead ends: 156 [2024-09-13 03:09:21,610 INFO L226 Difference]: Without dead ends: 152 [2024-09-13 03:09:21,612 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=940, Invalid=13340, Unknown=0, NotChecked=0, Total=14280 [2024-09-13 03:09:21,612 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:21,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1472 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-13 03:09:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-13 03:09:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2024-09-13 03:09:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 25 states have return successors, (26), 25 states have call predecessors, (26), 4 states have call successors, (26) [2024-09-13 03:09:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-09-13 03:09:21,676 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 162 [2024-09-13 03:09:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:21,676 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-09-13 03:09:21,677 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-13 03:09:21,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-09-13 03:09:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-09-13 03:09:21,678 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:21,678 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:09:21,691 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-13 03:09:21,878 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-13 03:09:21,878 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:21,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -528441364, now seen corresponding path program 11 times [2024-09-13 03:09:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184909795] [2024-09-13 03:09:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:22,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:22,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:09:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:22,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:22,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:22,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:23,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:23,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:23,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:23,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:23,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:23,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:24,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:25,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:25,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:25,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-09-13 03:09:25,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184909795] [2024-09-13 03:09:25,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184909795] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217812457] [2024-09-13 03:09:25,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:09:25,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:25,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:25,256 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:25,257 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-13 03:09:25,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-13 03:09:25,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:25,457 WARN L260 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-13 03:09:25,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-09-13 03:09:25,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-13 03:09:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217812457] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:31,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:31,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 72] total 82 [2024-09-13 03:09:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035473506] [2024-09-13 03:09:31,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:31,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-13 03:09:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-13 03:09:31,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6356, Unknown=0, NotChecked=0, Total=6642 [2024-09-13 03:09:31,803 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-13 03:09:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:33,927 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2024-09-13 03:09:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-13 03:09:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) Word has length 169 [2024-09-13 03:09:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:33,929 INFO L225 Difference]: With dead ends: 162 [2024-09-13 03:09:33,929 INFO L226 Difference]: Without dead ends: 158 [2024-09-13 03:09:33,931 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1012, Invalid=14738, Unknown=0, NotChecked=0, Total=15750 [2024-09-13 03:09:33,931 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 256 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:33,932 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1725 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-13 03:09:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-13 03:09:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2024-09-13 03:09:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 26 states have return successors, (27), 26 states have call predecessors, (27), 4 states have call successors, (27) [2024-09-13 03:09:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-09-13 03:09:34,023 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 169 [2024-09-13 03:09:34,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:34,023 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-09-13 03:09:34,023 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-13 03:09:34,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-09-13 03:09:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-13 03:09:34,024 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:34,024 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:09:34,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-13 03:09:34,225 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-13 03:09:34,225 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:34,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash -109275084, now seen corresponding path program 11 times [2024-09-13 03:09:34,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:34,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262991535] [2024-09-13 03:09:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:34,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:34,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:34,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:09:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:34,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:35,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:35,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:35,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:35,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:35,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:35,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:36,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-13 03:09:37,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262991535] [2024-09-13 03:09:37,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262991535] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334810573] [2024-09-13 03:09:37,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:09:37,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:37,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:37,748 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:37,748 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-13 03:09:37,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-13 03:09:37,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:37,971 WARN L260 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-09-13 03:09:37,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-13 03:09:38,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-13 03:09:44,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334810573] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:44,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:44,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2024-09-13 03:09:44,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735862063] [2024-09-13 03:09:44,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:44,912 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-13 03:09:44,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-13 03:09:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6682, Unknown=0, NotChecked=0, Total=6972 [2024-09-13 03:09:44,913 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-13 03:09:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:09:47,368 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2024-09-13 03:09:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-13 03:09:47,369 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) Word has length 176 [2024-09-13 03:09:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:09:47,370 INFO L225 Difference]: With dead ends: 168 [2024-09-13 03:09:47,370 INFO L226 Difference]: Without dead ends: 164 [2024-09-13 03:09:47,371 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1072, Invalid=15698, Unknown=0, NotChecked=0, Total=16770 [2024-09-13 03:09:47,372 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 3147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:09:47,372 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1833 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3147 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-13 03:09:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-13 03:09:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 96. [2024-09-13 03:09:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 5 states have call successors, (5), 4 states have call predecessors, (5), 27 states have return successors, (28), 27 states have call predecessors, (28), 4 states have call successors, (28) [2024-09-13 03:09:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-09-13 03:09:47,448 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 176 [2024-09-13 03:09:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:09:47,449 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-09-13 03:09:47,449 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-13 03:09:47,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-09-13 03:09:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-09-13 03:09:47,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:09:47,450 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:09:47,462 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-13 03:09:47,650 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-13 03:09:47,650 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:09:47,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:09:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash 399609968, now seen corresponding path program 12 times [2024-09-13 03:09:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:09:47,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085929291] [2024-09-13 03:09:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:09:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:09:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:47,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:09:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:47,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:09:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:48,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:48,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:48,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:48,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:49,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:50,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:09:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:09:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-13 03:09:51,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:09:51,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085929291] [2024-09-13 03:09:51,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085929291] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:09:51,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584781046] [2024-09-13 03:09:51,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:09:51,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:09:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:09:51,599 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:09:51,599 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-13 03:09:51,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-13 03:09:51,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:09:51,848 WARN L260 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-09-13 03:09:51,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:09:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-09-13 03:09:52,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:09:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-13 03:09:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584781046] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:09:59,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:09:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 88 [2024-09-13 03:09:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735378180] [2024-09-13 03:09:59,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:09:59,229 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-13 03:09:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:09:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-13 03:09:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2024-09-13 03:09:59,230 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-13 03:10:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:01,674 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2024-09-13 03:10:01,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-13 03:10:01,674 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) Word has length 183 [2024-09-13 03:10:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:01,676 INFO L225 Difference]: With dead ends: 174 [2024-09-13 03:10:01,676 INFO L226 Difference]: Without dead ends: 170 [2024-09-13 03:10:01,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1148, Invalid=17212, Unknown=0, NotChecked=0, Total=18360 [2024-09-13 03:10:01,678 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 150 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:01,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1815 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-13 03:10:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-13 03:10:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 99. [2024-09-13 03:10:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 28 states have return successors, (29), 28 states have call predecessors, (29), 4 states have call successors, (29) [2024-09-13 03:10:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2024-09-13 03:10:01,768 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 183 [2024-09-13 03:10:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:01,769 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2024-09-13 03:10:01,769 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-13 03:10:01,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2024-09-13 03:10:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-09-13 03:10:01,770 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:01,770 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:10:01,782 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-13 03:10:01,970 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-13 03:10:01,970 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:01,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash 848247796, now seen corresponding path program 12 times [2024-09-13 03:10:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:01,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574498431] [2024-09-13 03:10:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:02,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:02,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:10:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:02,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:02,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:03,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:04,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:05,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:06,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:06,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:06,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-13 03:10:06,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574498431] [2024-09-13 03:10:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574498431] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460185016] [2024-09-13 03:10:06,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:10:06,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:06,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:06,284 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:06,285 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-13 03:10:06,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-13 03:10:06,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:06,557 WARN L260 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-09-13 03:10:06,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 03:10:06,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-13 03:10:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460185016] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:14,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:14,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 90 [2024-09-13 03:10:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75750060] [2024-09-13 03:10:14,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:14,543 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-13 03:10:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-13 03:10:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7697, Unknown=0, NotChecked=0, Total=8010 [2024-09-13 03:10:14,545 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-13 03:10:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:17,170 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2024-09-13 03:10:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-13 03:10:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) Word has length 190 [2024-09-13 03:10:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:17,171 INFO L225 Difference]: With dead ends: 180 [2024-09-13 03:10:17,171 INFO L226 Difference]: Without dead ends: 176 [2024-09-13 03:10:17,173 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1213, Invalid=18247, Unknown=0, NotChecked=0, Total=19460 [2024-09-13 03:10:17,173 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 50 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:17,174 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1813 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-13 03:10:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-13 03:10:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 102. [2024-09-13 03:10:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 29 states have return successors, (30), 29 states have call predecessors, (30), 4 states have call successors, (30) [2024-09-13 03:10:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-09-13 03:10:17,295 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 190 [2024-09-13 03:10:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:17,295 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-09-13 03:10:17,296 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-13 03:10:17,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-09-13 03:10:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-13 03:10:17,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:17,297 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:10:17,316 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-13 03:10:17,497 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-13 03:10:17,497 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:17,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2019521140, now seen corresponding path program 13 times [2024-09-13 03:10:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262890631] [2024-09-13 03:10:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:17,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:17,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:17,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:10:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:18,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:18,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:18,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:19,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:19,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:19,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:19,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:20,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:20,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:20,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:20,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:20,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:20,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:21,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:22,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:22,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:22,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:22,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-09-13 03:10:22,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262890631] [2024-09-13 03:10:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262890631] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661820782] [2024-09-13 03:10:22,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:10:22,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:22,346 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:22,347 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-13 03:10:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:22,634 WARN L260 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-09-13 03:10:22,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-09-13 03:10:22,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-13 03:10:31,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661820782] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:31,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:31,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 84] total 94 [2024-09-13 03:10:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782842462] [2024-09-13 03:10:31,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:31,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-13 03:10:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-13 03:10:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8412, Unknown=0, NotChecked=0, Total=8742 [2024-09-13 03:10:31,071 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-13 03:10:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:33,984 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2024-09-13 03:10:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-13 03:10:33,984 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) Word has length 197 [2024-09-13 03:10:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:33,986 INFO L225 Difference]: With dead ends: 186 [2024-09-13 03:10:33,986 INFO L226 Difference]: Without dead ends: 182 [2024-09-13 03:10:33,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1292, Invalid=19878, Unknown=0, NotChecked=0, Total=21170 [2024-09-13 03:10:33,989 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:33,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2366 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-13 03:10:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-13 03:10:34,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2024-09-13 03:10:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 30 states have return successors, (31), 30 states have call predecessors, (31), 4 states have call successors, (31) [2024-09-13 03:10:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-09-13 03:10:34,133 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 197 [2024-09-13 03:10:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:34,133 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-09-13 03:10:34,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-13 03:10:34,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-09-13 03:10:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-13 03:10:34,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:34,135 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:10:34,159 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-13 03:10:34,335 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:34,335 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:34,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1282120500, now seen corresponding path program 13 times [2024-09-13 03:10:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649849572] [2024-09-13 03:10:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:34,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:10:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:35,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:35,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:35,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:35,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:36,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:36,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:36,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:37,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:37,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:37,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:37,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:37,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:38,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-09-13 03:10:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649849572] [2024-09-13 03:10:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649849572] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649928018] [2024-09-13 03:10:39,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:10:39,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:39,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:39,747 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:39,767 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-13 03:10:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:40,082 WARN L260 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-13 03:10:40,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-13 03:10:40,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:10:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-13 03:10:49,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649928018] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:10:49,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:10:49,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2024-09-13 03:10:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724500380] [2024-09-13 03:10:49,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:10:49,068 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-13 03:10:49,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:10:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-13 03:10:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2024-09-13 03:10:49,070 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-13 03:10:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:10:52,238 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2024-09-13 03:10:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-13 03:10:52,239 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) Word has length 204 [2024-09-13 03:10:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:10:52,240 INFO L225 Difference]: With dead ends: 192 [2024-09-13 03:10:52,240 INFO L226 Difference]: Without dead ends: 188 [2024-09-13 03:10:52,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1361, Invalid=20989, Unknown=0, NotChecked=0, Total=22350 [2024-09-13 03:10:52,242 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:10:52,243 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2176 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-13 03:10:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-13 03:10:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2024-09-13 03:10:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 31 states have return successors, (32), 31 states have call predecessors, (32), 4 states have call successors, (32) [2024-09-13 03:10:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-09-13 03:10:52,358 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 204 [2024-09-13 03:10:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:10:52,358 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-09-13 03:10:52,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-13 03:10:52,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-09-13 03:10:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-09-13 03:10:52,359 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:10:52,360 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:10:52,375 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-13 03:10:52,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:52,560 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:10:52,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:10:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1002784248, now seen corresponding path program 14 times [2024-09-13 03:10:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:10:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254166285] [2024-09-13 03:10:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:10:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:10:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:52,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:10:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:52,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:10:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:53,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:54,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:55,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:56,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:56,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:56,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:56,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:56,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:56,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:57,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:58,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:58,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:58,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:10:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:10:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-09-13 03:10:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:10:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254166285] [2024-09-13 03:10:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254166285] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:10:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385933830] [2024-09-13 03:10:58,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:10:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:10:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:10:58,285 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:10:58,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-13 03:10:58,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:10:58,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:10:58,629 WARN L260 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-09-13 03:10:58,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:10:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-09-13 03:10:58,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-09-13 03:11:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385933830] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:08,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 90] total 100 [2024-09-13 03:11:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783360232] [2024-09-13 03:11:08,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:08,207 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-13 03:11:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-13 03:11:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9548, Unknown=0, NotChecked=0, Total=9900 [2024-09-13 03:11:08,208 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-13 03:11:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:11,439 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2024-09-13 03:11:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-13 03:11:11,441 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) Word has length 211 [2024-09-13 03:11:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:11,442 INFO L225 Difference]: With dead ends: 198 [2024-09-13 03:11:11,442 INFO L226 Difference]: Without dead ends: 194 [2024-09-13 03:11:11,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1444, Invalid=22736, Unknown=0, NotChecked=0, Total=24180 [2024-09-13 03:11:11,444 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 80 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:11,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2354 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-13 03:11:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-13 03:11:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2024-09-13 03:11:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 32 states have return successors, (33), 32 states have call predecessors, (33), 4 states have call successors, (33) [2024-09-13 03:11:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2024-09-13 03:11:11,568 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 211 [2024-09-13 03:11:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:11,568 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2024-09-13 03:11:11,568 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-13 03:11:11,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2024-09-13 03:11:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-13 03:11:11,569 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:11,569 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:11:11,583 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-13 03:11:11,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:11,770 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:11,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash -203622924, now seen corresponding path program 14 times [2024-09-13 03:11:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021441380] [2024-09-13 03:11:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:12,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:12,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:11:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:12,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:13,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:13,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:13,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:14,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:15,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:16,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-09-13 03:11:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021441380] [2024-09-13 03:11:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021441380] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253942717] [2024-09-13 03:11:17,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:11:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:17,932 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:11:17,932 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-13 03:11:18,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:11:18,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:18,305 WARN L260 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 248 conjuncts are in the unsatisfiable core [2024-09-13 03:11:18,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2024-09-13 03:11:18,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-13 03:11:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253942717] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:28,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 93] total 102 [2024-09-13 03:11:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165090541] [2024-09-13 03:11:28,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:28,439 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-13 03:11:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-13 03:11:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=9945, Unknown=0, NotChecked=0, Total=10302 [2024-09-13 03:11:28,440 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) [2024-09-13 03:11:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:32,065 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2024-09-13 03:11:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-13 03:11:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) Word has length 218 [2024-09-13 03:11:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:32,067 INFO L225 Difference]: With dead ends: 204 [2024-09-13 03:11:32,067 INFO L226 Difference]: Without dead ends: 200 [2024-09-13 03:11:32,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1517, Invalid=23923, Unknown=0, NotChecked=0, Total=25440 [2024-09-13 03:11:32,069 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:32,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2420 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-13 03:11:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-13 03:11:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 114. [2024-09-13 03:11:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 33 states have return successors, (34), 33 states have call predecessors, (34), 4 states have call successors, (34) [2024-09-13 03:11:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2024-09-13 03:11:32,214 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 218 [2024-09-13 03:11:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:32,214 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2024-09-13 03:11:32,215 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) [2024-09-13 03:11:32,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2024-09-13 03:11:32,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-09-13 03:11:32,215 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:32,216 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:11:32,229 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-13 03:11:32,416 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-13 03:11:32,416 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:32,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash -232387844, now seen corresponding path program 15 times [2024-09-13 03:11:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:32,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94604461] [2024-09-13 03:11:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:32,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:32,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:11:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:33,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:33,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:34,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:34,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:34,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:35,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:35,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:35,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:35,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:36,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:36,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:36,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:36,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:37,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:37,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:37,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:37,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:37,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:37,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:38,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:39,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:39,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2024-09-13 03:11:39,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:11:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94604461] [2024-09-13 03:11:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94604461] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:11:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30772794] [2024-09-13 03:11:39,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:11:39,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:11:39,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:11:39,203 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:11:39,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-13 03:11:39,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-13 03:11:39,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:11:39,654 WARN L260 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 256 conjuncts are in the unsatisfiable core [2024-09-13 03:11:39,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:11:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-09-13 03:11:40,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:11:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-13 03:11:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30772794] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:11:50,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:11:50,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 96] total 106 [2024-09-13 03:11:50,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238074815] [2024-09-13 03:11:50,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:11:50,964 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-13 03:11:50,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:11:50,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-13 03:11:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=10756, Unknown=0, NotChecked=0, Total=11130 [2024-09-13 03:11:50,966 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) [2024-09-13 03:11:54,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:11:54,613 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2024-09-13 03:11:54,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-13 03:11:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) Word has length 225 [2024-09-13 03:11:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:11:54,615 INFO L225 Difference]: With dead ends: 210 [2024-09-13 03:11:54,615 INFO L226 Difference]: Without dead ends: 206 [2024-09-13 03:11:54,618 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1604, Invalid=25786, Unknown=0, NotChecked=0, Total=27390 [2024-09-13 03:11:54,618 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 196 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:11:54,619 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2624 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-13 03:11:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-09-13 03:11:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 117. [2024-09-13 03:11:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 34 states have return successors, (35), 34 states have call predecessors, (35), 4 states have call successors, (35) [2024-09-13 03:11:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2024-09-13 03:11:54,840 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 225 [2024-09-13 03:11:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:11:54,841 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2024-09-13 03:11:54,841 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) [2024-09-13 03:11:54,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2024-09-13 03:11:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-09-13 03:11:54,842 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:11:54,843 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:11:54,861 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-13 03:11:55,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-13 03:11:55,047 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:11:55,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:11:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2021035060, now seen corresponding path program 15 times [2024-09-13 03:11:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:11:55,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859277594] [2024-09-13 03:11:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:11:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:11:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:55,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:11:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:55,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:11:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:55,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:56,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:56,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:57,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:57,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:57,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:58,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:58,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:58,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:58,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:59,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:59,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:59,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:59,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:11:59,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:11:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:00,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:00,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:00,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:00,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:00,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:00,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:01,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:02,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:02,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 735 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2024-09-13 03:12:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:12:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859277594] [2024-09-13 03:12:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859277594] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:12:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608195740] [2024-09-13 03:12:02,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:12:02,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:12:02,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:12:02,222 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:12:02,224 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-13 03:12:02,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-13 03:12:02,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:12:02,689 WARN L260 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 264 conjuncts are in the unsatisfiable core [2024-09-13 03:12:02,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:12:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2024-09-13 03:12:03,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:12:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-09-13 03:12:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608195740] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:12:14,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:12:14,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 99] total 109 [2024-09-13 03:12:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962705169] [2024-09-13 03:12:14,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:12:14,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-09-13 03:12:14,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:12:14,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-09-13 03:12:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=11389, Unknown=0, NotChecked=0, Total=11772 [2024-09-13 03:12:14,291 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 109 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 74 states have internal predecessors, (182), 36 states have call successors, (38), 1 states have call predecessors, (38), 34 states have return successors, (66), 36 states have call predecessors, (66), 36 states have call successors, (66) [2024-09-13 03:12:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:12:18,374 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2024-09-13 03:12:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-13 03:12:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 74 states have internal predecessors, (182), 36 states have call successors, (38), 1 states have call predecessors, (38), 34 states have return successors, (66), 36 states have call predecessors, (66), 36 states have call successors, (66) Word has length 232 [2024-09-13 03:12:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:12:18,376 INFO L225 Difference]: With dead ends: 216 [2024-09-13 03:12:18,376 INFO L226 Difference]: Without dead ends: 212 [2024-09-13 03:12:18,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1685, Invalid=27385, Unknown=0, NotChecked=0, Total=29070 [2024-09-13 03:12:18,379 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 84 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 5046 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 5102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 5046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:12:18,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2721 Invalid, 5102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 5046 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-13 03:12:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-13 03:12:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 120. [2024-09-13 03:12:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 80 states have internal predecessors, (81), 5 states have call successors, (5), 4 states have call predecessors, (5), 35 states have return successors, (36), 35 states have call predecessors, (36), 4 states have call successors, (36) [2024-09-13 03:12:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2024-09-13 03:12:18,545 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 232 [2024-09-13 03:12:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:12:18,546 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2024-09-13 03:12:18,546 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 74 states have internal predecessors, (182), 36 states have call successors, (38), 1 states have call predecessors, (38), 34 states have return successors, (66), 36 states have call predecessors, (66), 36 states have call successors, (66) [2024-09-13 03:12:18,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2024-09-13 03:12:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-09-13 03:12:18,547 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:12:18,547 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:12:18,563 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-13 03:12:18,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-13 03:12:18,748 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:12:18,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash -30621312, now seen corresponding path program 16 times [2024-09-13 03:12:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:12:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371797224] [2024-09-13 03:12:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:12:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:12:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:19,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:12:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:19,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:12:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:19,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:20,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:20,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:20,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:21,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:21,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:21,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:22,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:22,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:22,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:23,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:23,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:23,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:23,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:24,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:24,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:24,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:24,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:24,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:24,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:25,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:26,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:26,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:26,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:26,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:26,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2024-09-13 03:12:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:12:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371797224] [2024-09-13 03:12:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371797224] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:12:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185274441] [2024-09-13 03:12:26,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:12:26,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:12:26,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:12:26,539 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:12:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-13 03:12:27,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:12:27,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:12:27,103 WARN L260 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 272 conjuncts are in the unsatisfiable core [2024-09-13 03:12:27,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:12:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2024-09-13 03:12:27,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:12:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 1504 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-09-13 03:12:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185274441] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:12:39,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:12:39,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 102] total 112 [2024-09-13 03:12:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131639208] [2024-09-13 03:12:39,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:12:39,355 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-13 03:12:39,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:12:39,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-13 03:12:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=12036, Unknown=0, NotChecked=0, Total=12432 [2024-09-13 03:12:39,356 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 112 states, 110 states have (on average 1.7) internal successors, (187), 76 states have internal predecessors, (187), 37 states have call successors, (39), 1 states have call predecessors, (39), 35 states have return successors, (68), 37 states have call predecessors, (68), 37 states have call successors, (68) [2024-09-13 03:12:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:12:43,741 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2024-09-13 03:12:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-09-13 03:12:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 110 states have (on average 1.7) internal successors, (187), 76 states have internal predecessors, (187), 37 states have call successors, (39), 1 states have call predecessors, (39), 35 states have return successors, (68), 37 states have call predecessors, (68), 37 states have call successors, (68) Word has length 239 [2024-09-13 03:12:43,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:12:43,743 INFO L225 Difference]: With dead ends: 222 [2024-09-13 03:12:43,743 INFO L226 Difference]: Without dead ends: 218 [2024-09-13 03:12:43,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3251 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1772, Invalid=29028, Unknown=0, NotChecked=0, Total=30800 [2024-09-13 03:12:43,746 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 536 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:12:43,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 3219 Invalid, 5527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 5261 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-13 03:12:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-13 03:12:44,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 123. [2024-09-13 03:12:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 36 states have return successors, (37), 36 states have call predecessors, (37), 4 states have call successors, (37) [2024-09-13 03:12:44,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2024-09-13 03:12:44,024 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 239 [2024-09-13 03:12:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:12:44,024 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2024-09-13 03:12:44,024 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 110 states have (on average 1.7) internal successors, (187), 76 states have internal predecessors, (187), 37 states have call successors, (39), 1 states have call predecessors, (39), 35 states have return successors, (68), 37 states have call predecessors, (68), 37 states have call successors, (68) [2024-09-13 03:12:44,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2024-09-13 03:12:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-09-13 03:12:44,025 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:12:44,025 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:12:44,041 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-13 03:12:44,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-13 03:12:44,226 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:12:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:12:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -728523276, now seen corresponding path program 16 times [2024-09-13 03:12:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:12:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359678806] [2024-09-13 03:12:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:12:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:12:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:44,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:12:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:44,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:12:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:45,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:45,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:46,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:46,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:46,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:47,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:47,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:47,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:48,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:48,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:48,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:49,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:50,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:51,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:12:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:12:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2024-09-13 03:12:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:12:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359678806] [2024-09-13 03:12:52,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359678806] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:12:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969702460] [2024-09-13 03:12:52,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:12:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:12:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:12:52,501 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:12:52,502 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-13 03:12:53,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:12:53,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:12:53,034 WARN L260 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 280 conjuncts are in the unsatisfiable core [2024-09-13 03:12:53,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:12:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2024-09-13 03:12:53,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:13:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-09-13 03:13:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969702460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:13:05,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:13:05,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 105] total 114 [2024-09-13 03:13:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318098363] [2024-09-13 03:13:05,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:13:05,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-09-13 03:13:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:13:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-09-13 03:13:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=12481, Unknown=0, NotChecked=0, Total=12882 [2024-09-13 03:13:05,971 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 114 states, 113 states have (on average 1.6902654867256637) internal successors, (191), 77 states have internal predecessors, (191), 37 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (70), 38 states have call predecessors, (70), 37 states have call successors, (70) [2024-09-13 03:13:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:13:10,234 INFO L93 Difference]: Finished difference Result 228 states and 230 transitions. [2024-09-13 03:13:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-13 03:13:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.6902654867256637) internal successors, (191), 77 states have internal predecessors, (191), 37 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (70), 38 states have call predecessors, (70), 37 states have call successors, (70) Word has length 246 [2024-09-13 03:13:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:13:10,236 INFO L225 Difference]: With dead ends: 228 [2024-09-13 03:13:10,236 INFO L226 Difference]: Without dead ends: 224 [2024-09-13 03:13:10,239 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1853, Invalid=30367, Unknown=0, NotChecked=0, Total=32220 [2024-09-13 03:13:10,239 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 50 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-13 03:13:10,240 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2704 Invalid, 4832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-13 03:13:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-13 03:13:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 126. [2024-09-13 03:13:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 5 states have call successors, (5), 4 states have call predecessors, (5), 37 states have return successors, (38), 37 states have call predecessors, (38), 4 states have call successors, (38) [2024-09-13 03:13:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2024-09-13 03:13:10,455 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 246 [2024-09-13 03:13:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:13:10,456 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2024-09-13 03:13:10,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.6902654867256637) internal successors, (191), 77 states have internal predecessors, (191), 37 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (70), 38 states have call predecessors, (70), 37 states have call successors, (70) [2024-09-13 03:13:10,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:10,456 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2024-09-13 03:13:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-13 03:13:10,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:13:10,458 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:13:10,477 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-13 03:13:10,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-13 03:13:10,658 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:13:10,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:10,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1861457532, now seen corresponding path program 17 times [2024-09-13 03:13:10,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:13:10,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719233725] [2024-09-13 03:13:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:13:10,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:13:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:11,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:13:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:11,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:13:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:11,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:12,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:12,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:13,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:13,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:13,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:14,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:14,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:14,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:15,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:15,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:15,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:16,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:16,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:16,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:16,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:17,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:17,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:17,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:17,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:17,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:17,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:18,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:19,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:19,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:19,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:19,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2024-09-13 03:13:19,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:13:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719233725] [2024-09-13 03:13:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719233725] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:13:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270169422] [2024-09-13 03:13:19,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:13:19,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:13:19,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:13:19,528 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:13:19,529 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-13 03:13:20,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-13 03:13:20,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:13:20,155 WARN L260 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 288 conjuncts are in the unsatisfiable core [2024-09-13 03:13:20,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:13:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2024-09-13 03:13:20,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:13:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 1700 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-09-13 03:13:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270169422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:13:33,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:13:33,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 108] total 118 [2024-09-13 03:13:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730855407] [2024-09-13 03:13:33,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:13:33,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-09-13 03:13:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:13:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-09-13 03:13:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=13388, Unknown=0, NotChecked=0, Total=13806 [2024-09-13 03:13:33,962 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 118 states, 116 states have (on average 1.6982758620689655) internal successors, (197), 80 states have internal predecessors, (197), 39 states have call successors, (41), 1 states have call predecessors, (41), 37 states have return successors, (72), 39 states have call predecessors, (72), 39 states have call successors, (72) [2024-09-13 03:13:38,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:13:38,593 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2024-09-13 03:13:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-13 03:13:38,594 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 116 states have (on average 1.6982758620689655) internal successors, (197), 80 states have internal predecessors, (197), 39 states have call successors, (41), 1 states have call predecessors, (41), 37 states have return successors, (72), 39 states have call predecessors, (72), 39 states have call successors, (72) Word has length 253 [2024-09-13 03:13:38,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:13:38,595 INFO L225 Difference]: With dead ends: 234 [2024-09-13 03:13:38,595 INFO L226 Difference]: Without dead ends: 230 [2024-09-13 03:13:38,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3621 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1948, Invalid=32462, Unknown=0, NotChecked=0, Total=34410 [2024-09-13 03:13:38,597 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 588 mSDsluCounter, 3035 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 5395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:13:38,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 3086 Invalid, 5395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-13 03:13:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-13 03:13:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 129. [2024-09-13 03:13:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 38 states have return successors, (39), 38 states have call predecessors, (39), 4 states have call successors, (39) [2024-09-13 03:13:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2024-09-13 03:13:38,895 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 253 [2024-09-13 03:13:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:13:38,895 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2024-09-13 03:13:38,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 116 states have (on average 1.6982758620689655) internal successors, (197), 80 states have internal predecessors, (197), 39 states have call successors, (41), 1 states have call predecessors, (41), 37 states have return successors, (72), 39 states have call predecessors, (72), 39 states have call successors, (72) [2024-09-13 03:13:38,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2024-09-13 03:13:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-13 03:13:38,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:13:38,896 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:13:38,910 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-13 03:13:39,097 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-13 03:13:39,097 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:13:39,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:13:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 894921524, now seen corresponding path program 17 times [2024-09-13 03:13:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:13:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35656946] [2024-09-13 03:13:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:13:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:13:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:39,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:13:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:39,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:13:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:40,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:40,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:41,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:41,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:42,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:42,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:42,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:43,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:43,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:43,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:44,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:45,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:45,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:45,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:45,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:46,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:47,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:13:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:13:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 935 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2024-09-13 03:13:48,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:13:48,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35656946] [2024-09-13 03:13:48,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35656946] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:13:48,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758351521] [2024-09-13 03:13:48,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:13:48,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:13:48,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:13:48,490 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:13:48,491 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-13 03:13:49,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-13 03:13:49,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:13:49,112 WARN L260 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 296 conjuncts are in the unsatisfiable core [2024-09-13 03:13:49,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:13:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2024-09-13 03:13:49,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:14:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 1802 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-09-13 03:14:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758351521] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:14:03,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:14:03,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 111] total 120 [2024-09-13 03:14:03,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190674223] [2024-09-13 03:14:03,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:14:03,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2024-09-13 03:14:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:14:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2024-09-13 03:14:03,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=13857, Unknown=0, NotChecked=0, Total=14280 [2024-09-13 03:14:03,488 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 120 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 81 states have internal predecessors, (201), 39 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (74), 40 states have call predecessors, (74), 39 states have call successors, (74) [2024-09-13 03:14:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:14:08,482 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2024-09-13 03:14:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-13 03:14:08,482 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 81 states have internal predecessors, (201), 39 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (74), 40 states have call predecessors, (74), 39 states have call successors, (74) Word has length 260 [2024-09-13 03:14:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:14:08,483 INFO L225 Difference]: With dead ends: 240 [2024-09-13 03:14:08,483 INFO L226 Difference]: Without dead ends: 236 [2024-09-13 03:14:08,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3661 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2033, Invalid=33877, Unknown=0, NotChecked=0, Total=35910 [2024-09-13 03:14:08,486 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 42 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 6212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 6233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:14:08,486 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3410 Invalid, 6233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 6212 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-13 03:14:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-09-13 03:14:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 132. [2024-09-13 03:14:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 39 states have return successors, (40), 39 states have call predecessors, (40), 4 states have call successors, (40) [2024-09-13 03:14:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 134 transitions. [2024-09-13 03:14:08,702 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 134 transitions. Word has length 260 [2024-09-13 03:14:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:14:08,702 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 134 transitions. [2024-09-13 03:14:08,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 81 states have internal predecessors, (201), 39 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (74), 40 states have call predecessors, (74), 39 states have call successors, (74) [2024-09-13 03:14:08,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:14:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 134 transitions. [2024-09-13 03:14:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-09-13 03:14:08,704 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:14:08,704 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:14:08,724 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-13 03:14:08,905 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-13 03:14:08,905 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:14:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:14:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 645923592, now seen corresponding path program 18 times [2024-09-13 03:14:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:14:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005564776] [2024-09-13 03:14:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:14:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:14:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:09,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:14:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:09,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:14:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:10,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:10,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:11,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:11,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:12,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:12,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:12,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:13,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:13,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:14,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:14,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:14,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:14,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:15,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:15,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:15,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:16,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:16,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:16,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:16,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:16,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:17,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:18,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2024-09-13 03:14:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:14:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005564776] [2024-09-13 03:14:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005564776] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:14:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226635883] [2024-09-13 03:14:19,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:14:19,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:14:19,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:14:19,054 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:14:19,055 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-13 03:14:19,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-13 03:14:19,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:14:19,724 WARN L260 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 304 conjuncts are in the unsatisfiable core [2024-09-13 03:14:19,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:14:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2024-09-13 03:14:20,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:14:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 1908 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-09-13 03:14:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226635883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:14:34,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:14:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80, 114] total 124 [2024-09-13 03:14:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633774028] [2024-09-13 03:14:34,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:14:34,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-09-13 03:14:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:14:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-09-13 03:14:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=14812, Unknown=0, NotChecked=0, Total=15252 [2024-09-13 03:14:34,880 INFO L87 Difference]: Start difference. First operand 132 states and 134 transitions. Second operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 84 states have internal predecessors, (207), 41 states have call successors, (43), 1 states have call predecessors, (43), 39 states have return successors, (76), 41 states have call predecessors, (76), 41 states have call successors, (76) [2024-09-13 03:14:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:14:39,878 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2024-09-13 03:14:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-13 03:14:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 84 states have internal predecessors, (207), 41 states have call successors, (43), 1 states have call predecessors, (43), 39 states have return successors, (76), 41 states have call predecessors, (76), 41 states have call successors, (76) Word has length 267 [2024-09-13 03:14:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:14:39,880 INFO L225 Difference]: With dead ends: 246 [2024-09-13 03:14:39,880 INFO L226 Difference]: Without dead ends: 242 [2024-09-13 03:14:39,882 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4011 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2132, Invalid=36088, Unknown=0, NotChecked=0, Total=38220 [2024-09-13 03:14:39,883 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 182 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 5475 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 5550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 5475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:14:39,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 3111 Invalid, 5550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 5475 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-13 03:14:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-09-13 03:14:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 135. [2024-09-13 03:14:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 5 states have call successors, (5), 4 states have call predecessors, (5), 40 states have return successors, (41), 40 states have call predecessors, (41), 4 states have call successors, (41) [2024-09-13 03:14:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2024-09-13 03:14:40,119 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 267 [2024-09-13 03:14:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:14:40,120 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2024-09-13 03:14:40,120 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 84 states have internal predecessors, (207), 41 states have call successors, (43), 1 states have call predecessors, (43), 39 states have return successors, (76), 41 states have call predecessors, (76), 41 states have call successors, (76) [2024-09-13 03:14:40,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:14:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2024-09-13 03:14:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-09-13 03:14:40,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:14:40,121 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:14:40,142 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-13 03:14:40,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-13 03:14:40,322 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:14:40,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:14:40,322 INFO L85 PathProgramCache]: Analyzing trace with hash 44905460, now seen corresponding path program 18 times [2024-09-13 03:14:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:14:40,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079487460] [2024-09-13 03:14:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:14:40,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:14:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:40,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:14:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:40,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:14:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:41,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:42,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:42,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:43,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:43,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:44,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:44,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:45,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:45,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:46,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:46,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:46,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:47,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:47,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:47,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:47,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:48,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:48,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:48,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:48,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:48,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:49,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:49,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:49,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:49,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:49,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:49,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:50,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:51,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:14:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:14:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2024-09-13 03:14:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:14:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079487460] [2024-09-13 03:14:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079487460] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:14:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856449762] [2024-09-13 03:14:51,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:14:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:14:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:14:51,119 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:14:51,119 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-13 03:14:51,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-13 03:14:51,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:14:51,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 236 conjuncts are in the unsatisfiable core [2024-09-13 03:14:51,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:14:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2024-09-13 03:14:57,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:20:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-09-13 03:20:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856449762] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:20:05,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:20:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82, 117] total 276 [2024-09-13 03:20:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499615282] [2024-09-13 03:20:05,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:20:05,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 276 states [2024-09-13 03:20:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:20:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2024-09-13 03:20:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=74746, Unknown=0, NotChecked=0, Total=75900 [2024-09-13 03:20:05,434 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 276 states, 274 states have (on average 1.3175182481751824) internal successors, (361), 162 states have internal predecessors, (361), 42 states have call successors, (44), 1 states have call predecessors, (44), 115 states have return successors, (115), 115 states have call predecessors, (115), 42 states have call successors, (115) [2024-09-13 03:20:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:20:16,455 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2024-09-13 03:20:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-13 03:20:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 276 states, 274 states have (on average 1.3175182481751824) internal successors, (361), 162 states have internal predecessors, (361), 42 states have call successors, (44), 1 states have call predecessors, (44), 115 states have return successors, (115), 115 states have call predecessors, (115), 42 states have call successors, (115) Word has length 274 [2024-09-13 03:20:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:20:16,457 INFO L225 Difference]: With dead ends: 252 [2024-09-13 03:20:16,458 INFO L226 Difference]: Without dead ends: 248 [2024-09-13 03:20:16,465 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25808 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=3088, Invalid=120464, Unknown=0, NotChecked=0, Total=123552 [2024-09-13 03:20:16,465 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 30 mSDsluCounter, 7213 mSDsCounter, 0 mSdLazyCounter, 12802 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 7267 SdHoareTripleChecker+Invalid, 12814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 12802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:20:16,466 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 7267 Invalid, 12814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 12802 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-09-13 03:20:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-13 03:20:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 138. [2024-09-13 03:20:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.021978021978022) internal successors, (93), 92 states have internal predecessors, (93), 5 states have call successors, (5), 4 states have call predecessors, (5), 41 states have return successors, (42), 41 states have call predecessors, (42), 4 states have call successors, (42) [2024-09-13 03:20:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2024-09-13 03:20:16,839 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 274 [2024-09-13 03:20:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:20:16,840 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2024-09-13 03:20:16,840 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 276 states, 274 states have (on average 1.3175182481751824) internal successors, (361), 162 states have internal predecessors, (361), 42 states have call successors, (44), 1 states have call predecessors, (44), 115 states have return successors, (115), 115 states have call predecessors, (115), 42 states have call successors, (115) [2024-09-13 03:20:16,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:20:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2024-09-13 03:20:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-09-13 03:20:16,841 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:20:16,841 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:20:16,858 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-13 03:20:17,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:20:17,042 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:20:17,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:20:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2134209012, now seen corresponding path program 19 times [2024-09-13 03:20:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:20:17,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176359659] [2024-09-13 03:20:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:20:17,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:20:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:17,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:20:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:17,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-13 03:20:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:18,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:19,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:20:19,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:20:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15